Publications

• Book Chapters
• Peer Reviewed Journal Papers
• Journal Papers in Review
• Journal Papers in Preparation
• Theses/Reports
• Articles and Editorials
• Peer Reviewed Conference Papers
• Conference Papers
• Conference Abstracts
• Media

Book Chapters

Pipunic, R. C., Ryu, D. and Walker, J. P., 2015. Assessing Near-Surface Soil Moisture Assimilation Impacts On Modeled Root-Zone Moisture For An Australian Agricultural Landscape. In: V. Lakshmi, D. Alsdorf, M. Anderson, S. Biancamaria, M.H. Cosh, J. Entin, G.J. Huffman, W. Kustas, P. van Oevelen, T. H. Painter, J. Parajka, M. Rodell, and Rudiger C. (Eds.) Remote Sensing of the Terrestrial Water Cycle, Geophysical Monograph 206, Wiley, United States, ISBN 978-1-118-87203-1, 556pp. (pdf 387kB)

Houser, P., De Lannoy, G., and Walker, J. P., 2012. Hydrologic Data Assimilation. In: J. P. Tiefenbacher (Ed.), Approaches to Managing Disaster - Assessing Hazards, Emergencies and Disaster Impacts, InTech, ISBN 979-953-307-006-2, 162pp. (pdf 601kB)

Houser, P. R., De Lannoy, G. and Walker, J. P., 2010. Land Surface Data Assimilation, p549-598. In: Lahoz, W., Khatattov, B. and Menard, R. (Eds.), Data Assimilation: Making sense of observations, Springer, The Netherlands, 732pp. (pdf 1.2MB)

Grayson, R. B., Western, A. W., Walker, J. P., Kandel, D. D., Costelloe, J. F. and Wilson, D. J., 2006. Controls on Patterns of Soil Moisture in Arid and Semi-Arid Systems, In: P. D'Ordorico and A. Porporato (Eds.), Ecohydrology of Arid and Semi-Arid Ecosystems, Springer, The Netherlands, 341pp. (pdf 1.6MB)

Walker, J. P. and Houser, P. R., 2005. Hydrologic Data Assimilation, In: A. Aswathanarayana (Ed.), Advances in Water Science Methodologies, A.A. Balkema, The Netherlands, 230pp. (pdf 696kB)

Peer Reviewed Journal Papers

Kim, S., van Zyl, J. J., Johnson, J. T., Moghaddam, M., Tsang, L., Colliander, A., Dunbar, S., Jackson, T. J., Jaruwatanadilok, S., West, R., Berg, A., Caldwell, T., Cosh, M. H., Goodrich, D. C., Livingston, S., Lopez-Baeza, E., Rowlandson, T., Thibeault, M., Walker, J. P., Entekhabi, D., Njoku, E. G., O'Neill, P. E., and Yueh, S. H., 2016. Surface Soil Moisture Retrieval Using the L-band Synthetic Aperture Radar Onboard the Soil Moisture Active Passive (SMAP) Satellite and Evaluation at Core Validation Sites, IEEE Transactions on Geoscience and Remote Sensing, In Press (11 Nov 2016)

Alonso-Arroyo, A., Camps, A., Monerris, A., Rüdiger, C., Walker, J.P., Onrubia, R., Querol, J., Park, H. and Pascual, D., 2016. On the Correlation Between GNSS-R Reflectivity and L-Band Microwave Radiometry: Towards An Improved Soil Moisture Monitoring, IEEE Journal of Selected Topics in Applied Earth Observation and Remote Sensing, In Press

Wu, X., Walker, J. P., Rüdiger, R., Panciera, R., Gao, Y., Intercomparison of Alternate Soil Moisture Downscaling Algorithms Using Active-Passive Microwave Observations, IEEE Geoscience and Remote Sensing Letters, In Press (12 Oct 2016)

Beringer, J., Hutley, L. B., McHugh, I., Arndt, S. K., Campbell, D., Cleugh, H. A., Cleverly, J., Resco de Dios, V., Eamus, D., Evans, B., Ewenz, C., Grace, P., Griebel, A., Haverd, V., Hinko-Najera, N., Huete, A., Isaac, P., Kanniah, K., Leuning, R., Liddell, M. J., Macfarlane, C., Meyer, W., Moore, C., Pendall, E., Phillips, A., Phillips, R. L., Prober, S. M., Restrepo-Coupe, N., Rutledge, S., Schroder, I., Silberstein, R., Southall, P., Yee, M., Tapper, N. J., van Gorse, E., Vote, C., Walker, J., and Wardlaw, T., 2016. An introduction to the Australian and New Zealand flux tower network - OzFlux, Biogeosciences, 13: 5895-5916. (pdf 9.7MB)

Shellito, P. J., Small, E. E., Colliander, A., Bindlish, R., Cosh, M. H., Berg, A., Bosch, D. D., Caldwell, T. G., Goodrich, D. C., McNairn, H., Prueger, J., Starks, P. J., van der Velde, R., and Walker, J. P., 2016. SMAP Soil Moisture Drying More Rapid Than Observed In Situ Following Rainfall Events, Geophysical Research Letters, 43: doi:10.1002/2016GL069946. Copyright 2016 IEEE (pdf 466kB)

Li, Y., Grimaldi, S., Walker, J.P. and Pauwels, V.R.N., 2016. Application of Remote Sensing Data to Constrain Operational Rainfall-Driven Flood Forecasting: A Review, Remote Sensing, 8(456): doi:10.3390/rs8060456. (pdf 737kB)

Chan, S., Bindlish, R., O'Neill, P., Njoku, E., Jackson, T., Colliander, A., Chen, F., Burgin, M., Dunbar, S., Piepmeier, J., Yueh, S., Entekhabi, D., Cosh, M., Caldwell, T., Walker, J., Wu, X., Berg, A., Rowlandson, T., Pacheco, A., McNairn, H., Thibeault, M., Martinez-Fernandez, J., Gonzalez-Zamora, A., Seyfried, M., Bosch, D., Starks, P., Goodrich, D., Prueger, J., Palecki, M., Small, E., Calvet, J-C., Crow, W and Kerr, Y, 2016. Assessment of the SMAP Level 2 Passive Soil Moisture Product, IEEE Transactions in Geoscience and Remote Sensing, 54(8): 4994-5007. Copyright 2016 IEEE (pdf 3.8MB)

He, L., Panciera, R., Tanase, M. A., Walker, J. P., Qin, Q., 2016. Soil Moisture Retrieval in Agricultural Fields Using Adaptive Model-based Polarimetric Decomposition of SAR Data, IEEE Transactions in Geoscience and Remote Sensing, 54(8): 4445-4460. Copyright 2016 IEEE (pdf 3.2MB)

Holgate, C. M., De Jeu, R. A. M, van Dijk, A. I. J. M., Liu, Y. Y., Renzullo, L. J., Kumar, V., Dharssi, I., Parinussa, R., Van Der Schalie, R., Gevaert, A., Walker, J., McJannet, D., Cleverly, J., Haverd, V., Trudinger, C.M. and Briggs, P. R., 2016. Comparison of Remotely Sensed and Modelled Soil Moisture Data Sets Across Australia, Remote Sensing of Environment, 186: 479-500. Copyright 2016 Elsevier Science Ltd. (pdf 1.4MB)

Grimaldi, S., Li, Y., Pauwels, V.R.N. and Walker, J.P., 2016. Remote Sensing-Derived Water Extent and Level to Constrain Hydraulic Flood Forecasting Models: Opportunities and Challenges, Surveys in Geophysics, 37(5): 977-1034. (pdf 2.1MB)

Azmi, M., Rüdiger, C. and Walker, J. P., 2016. Statistical Analysis of Short Term Water Stress Conditions at Riggs Creek OzFlux Tower Site, Theoretical and Applied Climatology, DOI 10.1007/s00704-016-1901-z. (pdf 1.4MB)

Fieber, K. D., Davenport, I. J., Ferryman, J. M., Gurney, R. J., Becerra, V. M., Walker, J. P. and Hacker, J. M., 2016. CHP Toolkit: Case Study of LAIe Sensitivity to Discontinuity of Canopy Cover in Fruit Plantations, IEEE Transactions on Geoscience and Remote Sensing, 54(9): 1-10. Copyright 2016 IEEE (pdf 656kB)

Shahrban, M., Walker, J. P., Wang, Q. J., Seed, A. and Steinle, P., An Evaluation of Numerical Weather Prediction Based Rainfall Forecasts, Hydrological Sciences Journal, In Press. (8 Jan 2016)

Lievens, H., De Lannoy, G. J. M., Al Bitar, A., Drusch, M., Dumedah, G. Hendricks-Franssen, H.-J., Kerr, Y. H., Tomer, S. K., Martens, B., Merlin, O., Pan, M., Roundy, J. K., Vereecken, H., Walker, J. P., Wood, E. F., Verhoest, N. E. C. and Pauwels, V. R. N., 2016. Assimilation of SMOS Soil Moisture and Brightness Temperature Products into a Land Surface Model, Remote Sensing of Environment, 180: 292-304. Copyright 2016 Elsevier Science Ltd. (pdf 1.4MB)

Yee, M. S., Walker, J. P., Monerris, A., Rüdiger, C. and Jackson, T. J., 2016. On the Identification of Representative In-situ Soil Moisture Monitoring Stations for the Validation of SMAP Soil Moisture Products in Australia, Journal of Hydrology, 537: 367-381. Copyright 2016 Elsevier Science Ltd. (pdf 2.4MB)

Moghaddam, N. F., Samsonov, S. V., Rüdiger, C., Walker, J. P. and Hall, W. D. M., 2016. Multi-temporal SAR Observations of the Surat Basin in Australia for Deformation Scenario Evaluation Associated with Man-made Interactions, Environmental Earth Sciences, 75(4):282, 16pp. (pdf 22MB)

Azmi, M., Rüdiger, C. and Walker, J. P., 2016. A Data Fusion-Based Drought Index, Water Resources Research, 52, doi:10.1002/2015WR017834. Copyright 2016 American Geophysical Union. Further reproduction or electronic distribution is not permitted (pdf 2.9MB)

Huang, Y., Walker, J. P., Gao, Y., Wu, X. and Monerris-Belda, A., 2015. Estimation of Vegetation Water Content from the Radar Vegetation Index at L-band, IEEE Transactions on Geoscience and Remote Sensing, DOI 10.1109/TGRS.2015.2471803. Copyright 2015 IEEE (pdf 3.1MB)

Sawada, Y., Koike, T., and Walker, J. P., 2015. A Land Data Assimilation System for Simultaneous Simulation of Soil Moisture and Vegetation Dynamics, Journal of Geophysical Research - Atmospheres, 120: 5910-5930. Copyright 2015 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 1.9MB)

Lievens H., Al Bitar A., Verhoest, N. E. C., Cabot, F., De Lannoy, G. J. M., Drusch, M., Dumedah, G., Hendricks-Franssen, H.-J., Kerr, Y., Tomer, S. K., Martens, B., Merlin, O., Pan M., van den Berg, M. J., Vereecken, H., Walker, J. P., Wood, E. F., Pauwels, V. R. N., 2015. Optimization of a Radiative Transfer Forward Operator for Simulating SMOS Brightness Temperatures over the Upper Mississippi Basin, Journal of Hydrometeorology, 16: 1109-1134. Copyright 2015 Elsevier Science Ltd. (pdf 4.3MB)

Verhoest, N. E. C., van den Berg, M. J., Martens, B., Lievens, H., Wood, E. F., Pan, M., Kerr, Y., Al Bitar, A., Tomer, S., Drusch, M., Vernieuwe, H., De Baets, B., Walker, J. P., Dumedah, G. and Pauwels, V. R. N., 2015. Copula-based Downscaling of Coarse-Scale Soil Moisture Observations with Implicit Bias Correction, IEEE Transactions on Geoscience and Remote Sensing, 53(6): 3507-3519. Copyright 2015 IEEE (pdf 2.2MB)

Dumedah, G., Walker, J. P., and Merlin, O., 2015. Root-zone Soil Moisture Estimation from Assimilation of Downscaled Soil Moisture and Ocean Salinity Data, Advances in Water Resources, 84: 14-22. Copyright 2015 Elsevier Science Ltd. (pdf 2.7MB)

Lievens, H., Tomer S. K., Al Bitar, A., De Lannoy, G. J. M., Drusch, M., Dumedah, G., Hendricks-Franssen, H.-J., Kerr, Y. H., Martens, B., Pan, M., Roundy, J. K., Vereecken, H., Walker, J. P., Wood, E. F., Verhoest N. E. C., Pauwels, V. R. N., 2015. SMOS Soil Moisture Assimilation for Improved Hydrologic Simulation in the Murray Darling Basin, Australia. Remote Sensing of Environment, 168: 146-162. Copyright 2015 Elsevier Science Ltd. (pdf 4.5MB)

Costelloe, J. F., Matic, V., Western, A. W., Walker, J. P., Tyler, M., 2015. Determining Vertical Leakage from the Great Artesian Basin, Australia, Through Up-scaling Field Estimates of Phreatic Evapotranspiration, Journal of Hydrology, 529: 1079-1094. Copyright 2015 Elsevier Science Ltd. (pdf 3.8MB)

Ye, N., Walker, J. P., Guerschman, J., Ryu, D., and Gurney, R. J., 2015. Standing Water Effect on Soil Moisture Retrieval From Passive Microwave Observations at L-band, Remote Sensing of Environment, 169: 232-242. Copyright 2015 Elsevier Science Ltd. (pdf 3.9MB)

Gao, Y., Walker, J. P., Allahmoradi, M., Monerris, A., Ryu, D., 2015. Optical Sensing of Vegetation Water Content: A Synthesis Study, IEEE Journal of Selected Topics in Remote Sensing, 8(4): 1456-1464. Copyright 2015 IEEE (pdf 1.8MB)

Ye, N., Walker, J. P., and Rüdiger, C., 2015. A Cumulative Distribution Function Method for Normalizing Variable-angle Microwave Observations, IEEE Transactions on Geoscience and Remote Sensing, 53(7): 3906-3916. Copyright 2015 IEEE (pdf 1.7MB)

Woodland, R. J., Thomson, J. R., MacNally, R., Reich, P., Evrard, V., Wary, F. Y., Walker, J. P., and Cook, P. L. M., 2015. Nitrogen Loads Explain Primary Productivity in Estuaries at the Ecosystem Scale. Limnology and Oceanography, doi:10.1002/lno.10136 (pdf 847kB)

Yee, M. S., Pauwels, V. R. N., Daly, E., Rüdiger, C., McCabe, M., Beringer, J. and Walker, J. P., 2015. A Comparison of Optical and Microwave Scintillometers with Eddy Covariance Derived Surface Heat Fluxes, Agricultural and Forest Meteorology, 213: 226-239. (pdf 1.45MB)

Teluguntla, P., Ryu, D., George, B., Walker, J. P., Malano, H. M., 2015. Mapping Flooded Rice Paddies Using Time Series of MODIS Imagery in the Krishna River Basin, India. Remote Sensing, 7: 8858-8882. (pdf 3.9MB)

Fieber, K. D., Davenport, I. J., Tanase, M. A., Ferryman, J. M., Gurney, R. J., Becerra, V. M., Walker, J. P., and Hacker, J. M., 2015. Validation of Canopy Height Profile Methodology for Small-footprint Full-waveform Airborne LiDAR data in a Discontinuous Canopy Environment. ISPRS Journal of Photogrammetry and Remote Sensing, 104: 144-157.

Rahmati, M., Oskouei, M., Neyshabouri, M., Walker, J. P., Fakherifard, A., Ahmadi, A., Mousavi, S. B., 2015. Soil Moisture Derivation Using Triangle Method in the Lighvan Watershed, North Western Iran, Journal of Soil Science and Plant Nutrition, 15(1): 167-178. (pdf 1.4MB)

Bandara, R., Walker, J. P., Rüdiger, C., and Merlin, O., 2015. Towards Soil Property Retrieval from Space: An Application with Disaggregated Satellite Observations, Journal of Hydrology, 522:582-593. Copyright 2015 Elsevier Science Ltd. (pdf 3.4MB)

Wu, X., Walker, J. P., Panciera, R., Rüdiger, R., Das, N., 2015. Effect of Land Cover Type on the SMAP Active/Passive Soil Moisture Downscaling Algorithm Performance, IEEE Geoscience and Remote Sensing Letters, 12(4): 846-850. Copyright 2015 IEEE (pdf 502kB)

Wu, X., Walker, J. P., Rüdiger, R., Panciera, R. and Gray, D., 2015. Simulation of the SMAP Data Stream from SMAPEx Field Campaigns in Australia, IEEE Transactions on Geoscience and Remote Sensing, 53(4): 1921-1934. Copyright 2015 IEEE (pdf 1.8MB)

Rahmati, M., Mohammad-Oskooei, M., Neyshabouri, M. R., Fakherifard, A., Ahmadi, A., Walker, J. P., 2014. ETM+ Data Applicability for Remote Sensing of Soil Salinity in Lighvan Watershed, Northwest of Iran, Current Opinion in Agriculture, 3(1): 10-13. (pdf 1.6MB)

Dumedah, G. and Walker, J. P., 2014. Intercomparison of the JULES and CABLE Land Surface Models Through Assimilation of Remotely Sensed Soil Moisture in Southeast Australia. Advances in Water Resources, 74: 231-244. Copyright 2014 Elsevier Science Ltd. (pdf 3.2MB)

Dumedah, G., Walker, J. P., 2014. Assessment of Land Surface Model Uncertainty: A Crucial Step Towards Identification of Model Weaknesses, Journal of Hydrology, 519: 1474-1484. Copyright 2014 Elsevier Science Ltd. (pdf 1.9MB)

Wu, X., Walker, J. P., Das, N., Panciera, R., Rüdiger, C., 2014. Evaluation of A Brightness Temperature Downscaling Algorithm using Active and Passive Microwave Observations, Remote Sensing of Environment, 155: 210-221. Copyright 2014 Elsevier Science Ltd. (pdf 2.0MB)

Dumedah, G., Walker, J. P. and Chik, L., 2014. Assessing Artificial Neural Networks and Statistical Methods for Infilling Missing Soil Moisture Records, Journal of Hydrology, 515: 330-344. Copyright 2014 Elsevier Science Ltd. (pdf 3.7MB)

Rüdiger, C., Doubkova, M., Larsen, J. R., Wagner, W., Walker, J. P., 2014. Similarities Between Spaceborne Active and Airborne Passive Microwave Observations at 1km Resolution. IEEE Geoscience and Remote Sensing Letters, 11(12): 2178-2182. Copyright 2014 IEEE (pdf 850kB)

Alonso-Arroyo, A., Camps, A., Aguasca, A., Forte, G., Monerris, A., Rüdiger, C., Walker, J.P., Park, H., Pascual, D. and Onrubia., R., 2014. Improving the Accuracy of Soil Moisture Retrievals Using the Phase Difference of the Dual-Polarization GNSS-R Interference Patterns. IEEE Geoscience and Remote Sensing Letters, 11(12): 2090-2094. Copyright 2014 IEEE (pdf 1.0MB)

Alonso-Arroyo, A., Camps, A., Monerris, A., Rüdiger, C., Walker, J. P., Aguasca, A., Forte, G., Park, H., Pascual, D., Onrubia, R., 2014. Dual-Polarization GNSS-R Interference Pattern Technique for Soil Moisture Mapping, Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7(5): 1533-1544. Copyright 2014 IEEE (pdf 2.1MB)

Bandara, R., Walker, J. P., and Rüdiger, C., 2014. Towards Soil Property Retrieval from Space: A Proof of Concept Using In-Situ Observations, Journal of Hydrology, 512: 27-38. Copyright 2014 Elsevier Science Ltd. (pdf 2.6MB)

Tanase, M., Panciera, R., Lowell, K., Tian, S., Hacker, J., and Walker, J. P., 2014. Airborne Multi-temporal L-band Polarimetric SAR Data for Biomass Estimation in Semi-Arid Forests, Remote Sensing of Environment, 145: 93-104, http://dx.doi.org/10.1016/j.rse.2014.01.024 Copyright 2014 Elsevier Science Ltd. (pdf 1.2MB)

Fieber, K., Davenport, I., Tanase, M. A., Ferryman, J. M., Gurney, R. J., Walker, J. P., Hacker, J. M., 2014. Effective LAI and CHP of a Single Tree from Small-Footprint Airborne Full-Waveform LiDAR, Geoscience and Remote Sesning Letters, 11(9): 1634-1638. Copyright 2014 IEEE (pdf 303kB)

Tanase, M., Panciera, R., Lowell, K., Tian, S., Garcia-Martin, A., and Walker, J. P., 2014. Sensitivity of L-band Radar Backscatter to Forest Biomass in Semiarid Environments: A Comparative Analysis of Parametric and Nonparametric Models, IEEE Transactions on Geoscience and Remote Sensing, 52(8): 4671-4684. Copyright 2014 IEEE (pdf 1.5MB)

Dumedah, G., and Walker, J. P., 2014. Evaluation of Model Parameter Convergence When Using Data Assimilation for Soil Moisture Estimation, Journal of Hydrometeorology, 15(1): 359-375. Copyright 2014 Elsevier Science Ltd. (pdf 3.8MB)

Panciera, R., Tanase, M., Lowell, K., Walker, J. P., 2014. Evaluation of IEM, Dubois and Oh Radar Backscatter Models using Airborne L-band SAR. IEEE Transactions on Geoscience and Remote Sensing, 52(8): 4966-4979. Copyright 2014 IEEE (pdf 1.2MB)

Dumedah, G., Walker, J. P., and Rüdiger, C., 2014. Can SMOS Data be Used Directly on the 15km Discrete Global Grid?, IEEE Transaction on Geoscience and Remote Sensing, 52(5): 2538-2544. Copyright 2014 IEEE (pdf 2.6MB)

Li, D., Jin, R., Che, T., Walker, J. P., Gao, Y., Ye, N., and Wang, S., 2014. Soil Moisture Retrieval from Airborne PLMR and MODIS Products in Zhangye Oasis of Heihe River Basin, China. Advances in Earth Science, 29(2): 295-305. In Chineese (pdf 12.2MB)

Peischl, S., Walker, J. P., Nan, Y., Ryu, D., Kerr, Y., 2014. Sensitivity of Multi-Parameter Soil Moisture retrievals to Incidence Angle Configuration, Remote Sensing of Environment, 143: 64-72, http://dx.doi.org/10.1016/j.rse.2013.11.019, Copyright 2014 Elsevier Science Ltd. (pdf 667kB)

Rüdiger, C., Walker, J. P., Kerr, Y. H., Kim, E. J., Gurney, R., Barrett, D., and Le Marshall, J., 2014. Towards Vicarious Calibration of Microwave Remote Sensing Satellites in Arid Environments. IEEE Transactions on Geoscience and Remote Sensing, 52(3): 1749-1760, Copyright 2014 IEEE (pdf 1.3MB)

Tanase, M. A., Panciera, R., Lowell, K., Aponte, C., Hacker, J. M. and Walker, J. P., 2014. Forest Biomass Estimation at High Spatial Resolution: Radar vs Lidar Sensors, IEEE Geoscience and Remote Sensing Letters, 11(3): 711-715, doi:10.1109/LGRS.2013.2276947.(pdf 514kB)

Turner, R., Panciera, R., Tanase, M., Lowell, K., Hacker, J., Walker, J. P., 2014. Estimation of Soil Surface Roughness in Australian Agricultural Soils Using Airborne LiDAR. Remote Sensing of Environment, 140: 107-117. Copyright 2014 Elsevier Science Ltd. (pdf 2.1MB)

Panciera, R., Walker, J. P., Jackson, T. J., Gray, D., Tanase, M. A., Ryu, D., Monerris, A., Yardley, H., Rüdiger, C., Wu, X., Gao, Y., Hacker, J., 2014. The Soil Moisture Active Passive Experiments (SMAPEx): Towards Soil Moisture Retrieval from the SMAP Mission. IEEE Transaction on Geoscience and Remote Sensing, 52(1): 490-507. Copyright 2014 IEEE. (pdf 2.5MB)

Pipunic, R. C., Walker, J. P., Western, A. W. and Trudinger, C. M., 2013. Assimilation of Multiple Data Types for Improved Heat Flux Prediction: A One-dimensional Field Study. Remote Sensing of Environment, 136: 315-329, doi: http://dx.doi.org/10.1016/j.rse.2013.05.015. Copyright 2013 Elsevier Science Ltd. (pdf 1.2MB)

Bandara, R., Walker, and Rüdiger, C., 2013. Towards Soil Property Retrieval from Space: A one-dimensional Twin Experiment, Journal of Hydrology, 497: 198-207, doi: http://dx.doi.org/10.1016/j.jhydrol.2013.06.004. Copyright 2013 Elsevier Science Ltd. (pdf 1.3MB)

Fieber, K. D., Davenport, I. J., Ferryman, J., Gurney, R., and Walker, J. P., 2013. Analysis of Full-waveform LiDAR data for Classification of an Orange Orchard Scene, ISPRS Journal of Photogrammetry and Remote Sensing, 82: 63-82, doi: http://dx.doi.org/10.1016/j.isprsjprs.2013.05.002. (pdf 12MB)

Teluguntla, P., Ryu, D., George, B., and Walker, J. P., 2013. Multidecadal Trend of Basin-scale Evapotranpiration Estimated Using AVHRR Data in the Krishna River Basin, India, Vadose Zone Journal, doi:10.2136/vzj2012.0118 (pdf 4.5MB)

Vreugdenhil, M., de Jeu, R., and Walker, J. P., 2013. Identification of Claypans from AMSR-E Passive Microwave Observations, International Journal of Remote Sensing, 34(14):5201-5212, doi: http://dx.doi.org/10.1080/01431161.2013.788801 (pdf2.5MB).

Ershadi, A., McCabe, M. F., Evans, J. P. and Walker, J. P., 2013. Effects of Spatial Aggregation on the Multi-scale Estimation of Evapotranspiration, Remote Sensing of Environment, 131: 51-62. Copyright 2013 Elsevier Science Ltd. (pdf 3.3MB)

Smith, A. B., Walker, J. P., Western, A. W., Young, R. I., Ellett, K. M., Pipunic, R. C., Grayson, R. B., Siriwidena, L., Chiew, F. H. S., and Richter, H., 2012. The Murrumbidgee Soil Moisture Monitoring Network Data Set. Water Resources Research, 48, W07701, 6pp, doi:10.1029/2012WR011976. Copyright 2012 American Geophysical Union. Further reproduction or electronic distribution is not permitted (pdf 650kB)

Peischl, S., Walker, J., Rüdiger, C., Ye, N., Kerr, Y., Kim, E., Bandara, R. and M. Allahmoradi, 2012. The AACES Field Experiments: SMOS Calibration and Validation Across the Murrumbidgee River Catchment. Hydrology and Earth System Science, 16: 1697-1708, doi:10.5194/hess-16-1697-2012. (pdf 11.2MB)

Bircher, S., Skou, N., Jensen, K. H., Walker, J. P. and Rasmussen, L., 2012. A Soil Moisture and Temperature Network for SMOS Validation in Western Denmark. Hydrology and Earth System Science, 16: 1445-1463, doi:10.5194/hess-16-1445-2012. (pdf 4.6MB)

Crow, W. T., Berg, A. A., Cosh, M. H., Loew, A., Mohanty, B. P., Panciera, R., de Rosnay, P., Ryu, D., and Walker, J. P., 2012. Upscaling Sparse Ground-based Soil Moisture Observations for the Validation of Coarse-resolution Satellite Soil Moisture Products. Reviews of Geophysics, 50, RG2002, doi: 10.1029/2011RG000372. (pdf 889kB)

McColl, K. A., Ryu, D., Matic V., Walker, J. P. and Rüdiger, C., 2012. Soil Salinity Impacts on L-band Microwave Remote Sensing of Soil Moisture. Geoscience and Remote Sensing Letters, 9(2): 262-266, doi:10.1109/LGRS.2011.2165932. (pdf 442kB)

Peischl, S., Walker, J. P., Ryu, D., Kerr, Y., Panciera, R., and Rüdiger, C., 2012. Wheat Canopy Structure and Surface Roughness Effects on Multi-angle Observations at L-band. IEEE Transactions on Geoscience and Remote Sensing, 50(5): 1498-1506, doi:10.1109/TGRS.2011.2174644. Copyright 2012 IEEE. (pdf 560k)

Merlin, O., Rüdiger, C., Al Bitar, A., Richaume, P., Walker, J. P. and Kerr, Y., 2012. Disaggregation of SMOS Soil Moisture in Southeastern Australia. IEEE Transactions on Geoscience and Remote Sensing, 50(5), doi:10.1109/TGRS.2011.2175000. Copyright 2012 IEEE (pdf 1.27MB)

Merlin, O., Jacob, F., Wigneron, J-P, Walker, J. P. and Chehbouni, G., 2012. Multidimensional Disaggregation of Land Surface Temperature Using High-Resolution Red, Near-Infrared, Shortwave-Infrared, and Microwave-L Bands. IEEE Transactions on Geoscience and Remote Sensing, 50(5), doi:10.1109/TGRS.2011.2169802. Copyright 2012 IEEE (pdf 1.20MB)

Mladenova, I., Lakshmi, V., Jackson, T., Walker, J. P., Merlin, O. and de Jeu, R. A. M., 2011. Validation of AMSR-E Soil Moisture Using L-band Airborne Radiometer Data from the National Airborne Field Experiment 2006. Remote Sensing of Environment, 115(8): 2096-2103. Copyright 2011 Elsevier Science Ltd. (pdf 878kB)

Panciera, R., Walker, J. P., Kalma, J. and Kim, E., 2011. A Proposed Extension to the Soil Moisture and Ocean Salinity Level 2 Algorithm for Mixed Forest and Moderate Vegetation Pixels. Remote Sensing of Environment, 115(12):3343-3354. doi:10.1016/j.rse.2011.07.017. Copyright 2011 Elsevier Science Ltd. (pdf 1.1MB)

Piles, M., Camps, A., Vall-llosera, M., Corbella, I., Panciera, R., Rüdiger, C., Kerr, Y. and Walker, J. P., 2011. Downscaling SMOS-Derived Soil Moisture Using MODIS Visible/Infrared Data. IEEE Transactions on Geoscience and Remote Sensing, 49(9):3156-3166. doi:10.1109/TGRS.2011.2120615. Copyright 2011 IEEE (pdf 1.63MB)

Rüdiger, C., Walker, J. P., Kerr, Y. H., 2011. On The Airborne Spatial Coverage Requirement for Microwave Satellite Validation. Geoscience and Remote Sensing Letters, 8(4):824-828. doi:10.1109/LGRS.2011.2116766. (pdf 583kB)

Calvet, J-C., Wigneron, J-P., Walker, J. P., Karbou, F., Chanzy, A. and Albergel, C., 2011. Sensitivity of Passive Microwave Observations to Soil Moisture and Vegetation Water Content: L-band to W-band. IEEE Transactions on Geoscience and Remote Sensing, 49(4):1190-1199. doi:10.1109/TGRS.2010.2050488. Copyright 2011 IEEE (pdf 1.23MB)

Draper, C., Mahfouf, J-F. and Walker, J. P., 2011. Root zone Soil Moisture From the Assimilation of Screen-level Variables and Remotely Sensed Soil Moisture, Journal of Geophysical Research - Atmospheres, 116, D02127, doi:10.1029/2010JD013829, 13pp. Copyright 2011 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 1.6MB)

Merlin, O., Al Bitar, A., Walker, J. P. and Kerr, Y., 2010. An Improved Algorithm for Disaggregating Microwave-Derived Soil Moisture Based on Red, Near-infrared and Thermal-infrared Data. Remote Sensing of Environment, 114: 2305-2316, doi:10.1016/j.rse.2010.05.007. Copyright 2010 Elsevier Science Ltd. (pdf 1.5MB)

Albergel, C., Calvet, J-C., Mahfouf, J-F., Rüdiger, C., Barbu, A. L., Lafont, S., Roujean, J. -L., Walker, J. P., Crapeau, M. and Wigneron, J-P., 2010. Monitoring of Water and Carbon Fluxes Using a Land Data Assimilation System: A Case Study for Southwestern France. Hydrology and Earth System Science, 14: 1109-1124, doi:10.5194/hess-14-1109-2010. (pdf 10.5MB)

Grant, J. P., Van de Griend, A. A., Wigneron, J-P., Saleh, K., Panciera, R. and Walker, J. P., 2010. Influence of Forest Cover Fraction on L-band Soil Moisture Retrievals from Heterogeneous Pixels using Multi-Angular Observations. Remote Sensing of Environment, 114: 1026-1037. doi:10.1016/j.rse.2009.12.016 Copyright 2010 Elsevier Science Ltd. (pdf 1.4MB)

Mladenova, I., Lakshmi, V., Walker, J. P., Panciera, R., Wagner, W. and Doubkova, M., 2010. Validation of the ASAR Global Monitoring Mode Soil Moisture Product Using the NAFE05 Data Set. IEEE Transaction on Geoscience and Remote Sensing, 48(6): 2498-2508. doi:10.1109/TGRS.2010.2040746 Copyright 2010 IEEE (pdf 804kB)

Rüdiger, C., Albergel, C., Mahfouf, J. -F., Calvet, J. -C. and Walker, J. P., 2010. Evaluation of the Observation Operator Jacobian for Leaf Area Index Data Assimilation with an Extended Kalman Filter. Journal of Geophysical Research - Atmospheres, 115, D09111, doi:10.1029/2009JD012912, 10pp. Copyright 2010 American Geophysical Union. Further reproduction or electronic distribution is not permitted (pdf 404kB)

Rüdiger, C., Western, A. W., Walker, J. P., Smith, A. B., Kalma, J. D. and Willgoose, G. R., 2010. Towards a General Equation for Frequency Domain Reflectometers. Journal of Hydrology, 383: 319-329. doi:10.1016/j.jhydrol.2009.12.046 Copyright 2010 Elsevier Science Ltd. (pdf 776kB)

Chai, S. -S., Walker, J. P., Makarynskyy, O., Kuhn, M., Veenendaal, B. and West, B., 2010. Use of Soil Moisture Variability in Artificial Neural Network Retrieval of Soil Moisture. Remote Sensing, 2: 166-190, doi:10.3390/rs2010166. (pdf 539kB)

Zhang, Y., Leuning, R., Hutley, L. B., Beringer, J., McHugh, I. and Walker, J. P., 2010. Using Long-term Water Balances to Parameterize Surface Conductances and Calculate Evaporation at 0.05^o Spatial Resolution. Water Resources Research, 46(5), W05512, doi:10.1029/2009WR008716, 14pp. Copyright 2010 American Geophysical Union. Further reproduction or electronic distribution is not permitted (pdf 1.2MB)

Mladenova, I., Lakshmi, V., Walker, J. P., Long, D. and De Jeu, R., 2009. An Assessment of QuickSCAT Ku Band Scatterometer Data for Soil Moisture Sensitivity. Geoscience and Remote Sensing Letters, 6(4): 640-643, doi:10.1109/LGRS.2009.2021492. (pdf 343kB)

de Jeu, R. A. M., Holmes, T. R. H., Panciera, R. and Walker, J. P., 2009. Parameterization of the Land Parameter Retrieval Model for L-band Observations using the NAFE'05 Dataset. Geoscience and Remote Sensing Letters, 6(4): 630-634, doi:10.1109/LGRS.2009.2019607. (pdf 218kB)

Merlin, O., Walker, J. P., Panciera, R., Escorihuela, M. J. and Jackson, T., 2009. Assessing the SMOS Soil Moisture Retrieval Parameters with High-resolution NAFE'06 Data. Geoscience and Remote Sensing Letters, 6(4): 635-639, doi:10.1109/LGRS.2009.2012727. (pdf 389kB)

Summerell, G., Shoemark, V., Grant, S. and Walker, J. P., 2009. Using Passive Microwave Response to Soil Moisture Change for Soil Mapping: A Case Study for the Livingstone Creek Catchment. Geoscience and Remote Sensing Letters, 6(4): 649-652, doi:10.1109/LGRS.2009.2015967. (pdf 535kB)

Panciera, R., Walker, J. P. and Merlin, O., 2009. Improved Understanding of Soil Surface Roughness Parameterization for L-band Passive Microwave Soil Moisture Retrieval. Geoscience and Remote Sensing Letters, 6(4): 625-629, doi:10.1109/LGRS.2009.2013369. (pdf 373kB)

Draper, C. S., Mahfouf, J. -F. and Walker, J. P., 2009. An EKF Assimilation of AMSR-E Soil Moisture into the ISBA Land Surface Scheme, Journal of Geophysical Research - Atmospheres, 114, D20104, doi:10.1029/2008JD011650 Copyright 2009 American Geophysical Union. Further reproduction or electronic distribution is not permitted.(pdf 4.8MB)

Merlin, O., Al Bitar, A., Walker, J. P. and Kerr, Y., 2009. A Sequential Model for Disaggregating Near-Surface Soil Moisture Observations Using Multi-Resolution Thermal Sensors. Remote Sensing of Environment, 113(10): 2275-2284. Copyright 2009 Elsevier Science Ltd. (pdf 835kB)

Saleh, K., Kerr, Y., Richaume, P., Escorihuela, M., Panciera, R., Delwart, S., Boulet, G., Maisongrande, P., Walker, J. P., Wursteisen, P. and Wigneron, J. P., 2009. Soil Moisture Retrievals at L-band Using a Two-Step Inversion Approach (COSMOS/NAFE'05 Experiment). Remote Sensing of Environment, 113(6): 1304-1312. Copyright 2009 Elsevier Science Ltd. (pdf 658kB)

Panciera, R., Walker, J. P., Kalma, J. D., Kim, E. J., Saleh, K. and Wigneron, J-P., 2009. Evaluation of the SMOS L-MEB Passive Microwave Soil Moisture Retrieval Algorithm. Remote Sensing of Environment, 113(2): 435-444, doi:10.1016/j.rse.2008.10.010. Copyright 2009 Elsevier Science Ltd. (pdf 1.4MB)

Draper, C. S., Walker, J. P., Steinle, P. J., de Jeu, R. A. M. and Holmes, T. R. H., 2009. An Evaluation of AMSR-E Derived Soil Moisture over Australia. Remote Sensing of Environment, 113:703-710, doi:10.1016/j.rse.2008.11.011. Copyright 2009 Elsevier Science Ltd. (pdf 1.4MB)

Merlin, O., Walker, J. P., Kalma, J. D., Kim, E., Hacker, J., Panciera, R., Young, R., Summerell, G., Hornbuckle, J., Hafeez, M. and Jackson, T., 2008. The NAFE'06 Data Set: Towards Soil Moisture Retrieval at Intermediate Resolution. Advances in Water Resources, 31(11):1444-1455. doi:10.1016/j.advwatres.01.018 Copyright 2008 Elsevier Science Ltd. (pdf 2.4MB)

Parinussa, R. M., de Jeu, R. A. M., Holmes, T. R. H. and Walker, J. P., 2008. Comparison of Microwave and Infrared Land Surface Temperature Products over the NAFE'06 Research Sites. Geoscience and Remote Sensing Letters, 5(4):783-787, doi:10.1109/LGRS.2008.2005738. Copyright 2008 IEEE. (pdf 1.3MB)

Escorihuela, M. J., Saleh, K., Richaume, P., Merlin, O., Walker, J. P. and Kerr, Y. H., 2008. Sunglint Observations over Land From Ground and Airborne L-band Radiometer Data. Geophysical Research Letters, 35(20), L20406, 5pp, doi:10.1029/2008GL035062. Copyright 2008 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 623kB)

Merlin, O., Walker, J. P., Chehbouni, A. and Kerr, Y. H., 2008. Towards Deterministic Downscaling of SMOS Soil Moisture Using MODIS Derived Soil Evaporative Efficiency. Remote Sensing of Environment, 112(10): 3935-3946. Copyright 2008 Elsevier Science Ltd. (pdf 1.3MB)

Merlin, O., Chehbouni, A., Walker, J. P., Panciera, R. and Kerr, Y. H., 2008. A Simple Method to Dissagregate Passive-Microwave-Based Soil Moisture. IEEE Transactions on Geoscience and Remote Sensing, 46(3): 786-796, doi:10.11.09/TGRS.2007.914807. Copyright 2008 IEEE. (pdf 800kB)

Panciera, R., Walker, J. P., Kalma, J. D., Kim, E. J., Hacker, J., Merlin, O., Berger, M., and Skou, N., 2008. The NAFE'05/CoSMOS Dataset: Towards SMOS Soil Moisture Retrieval, Downscaling and Assimilation. IEEE Transactions on Geoscience and Remote Sensing, 46(3):736-745, doi:10.1109/TGRS.2007.915403. Copyright 2008 IEEE. (pdf 1.3MB)

Turner, M. R. J., Walker, J. P. and Oke, P. R., 2008. Ensemble Member Generation for Sequential Data Assimilation. Remote Sensing of Environment, 112: 1421-1433, doi:10.1016/j.rse.2007.02.042. Copyright 2008 Elsevier Science Ltd. (pdf 899kB)

Pipunic, R., Walker, J. P. and Western, A. W., 2008. Assimilation of Remotely Sensed Data for Improved Latent and Sensible Heat Flux Prediction: A Comparative Synthetic Study. Remote Sensing of Environment, 112: 1295-1305, doi:10.1016/j.rse.2007.02.038. Copyright 2008 Elsevier Science Ltd. (pdf 683kB)

Teuling, A. J., Uijlenhoet, R., Hurkmans, R., Merlin, O., Panciera, R., Walker, J. P. and Troch, P. A., 2007. Dry-end Surface Soil Moisture Variability during NAFE'06. Geophysical Research Letters, 34, L17402, 5pp, doi:10.1029/207GL031001. Copyright 2007 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 354kB)

Rüdiger, C., Hancock, G. R., Hemakumara, H. M., Jacobs, B., Kalma, J. D., Martinez, C., Thyer, M., Walker, J. P., Wells, T. and Willgoose, G. R., 2007. Goulburn River Experimental Catchment Data Set. Water Resources Research, 43, W10403, 10pp, doi:10.1029/2006WR005837.Copyright 2007 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 766kB)

Dong, J., Walker, J. P., Houser, P. R. and Sun, C., 2007. Scanning Multichannel Microwave Radiometer Snow Water Equivalent Assimilation. Journal of Geophysical Research - Atmospheres, 112, D07108, 16pp, doi:10.1029/2006JD007209. Copyright 2007 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 4.1MB)

Ni-Meister, W., Houser, P. R. and Walker, J. P., 2006. Soil Moisture Initialization for Climate Prediction: Assimilation of Scanning Multifrequency Microwave Radiometer Soil Moisture Data into a Land Surface Model. Journal of Geophysical Research - Atmospheres, 111(20), D20102, 15pp, doi:10.1029/2006JD007190. Copyright 2006 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 8.7MB)

Ellett, K. M., Walker, J. P., Western, A. W. and Rodell, M., 2006. A Framework for Assessing the Potential of Remote-Sensed Gravity to Provide New Insight on the Hydrology of the Murray-Darling Basin. Australian Journal of Water Resources, 10(2): 125-138. (pdf 980kB)

Savige, C., French, A. N., Western, A. W., Walker, J. P., Abuzar, M., Hacker, J. M. and Kalma, J. D., 2006. Remote Sensing Estimates of Actual Evapotranspiration in an Irrigation District at a Range of Scales. Australian Journal of Water Resources, 10(2): 207-212.

Walker, J. P. and Willgoose, G. R., 2006. A Comparative Study of Australian Cartometric and Photogrammetric Digital Elevation Model Accuracy. Photogrammetric Engineering and Remote Sensing, 72(7): 771-779. (pdf 2.69MB)

Zhan, X., Houser, P. R., Walker, J. P. and Crow, W., 2006. A Method for Retrieving High Resolution Surface Soil Moisture from Hydros L-Band Radiometer and Radar Observations. IEEE Transactions on Geoscience and Remote Sensing, 44(6):1534-1544, doi:10.1109/TGRS.2005.863319. Copyright 2006 IEEE (pdf 1.47MB)

Dong, J., Walker, J. P. and Houser, P. R., 2005. Factors Affecting Remotely Sensed Snow Water Equivalent Uncertainty. Remote Sensing of Environment, 97(1): 68-82, doi:10.1016/j.rse.2005.04.010. Copyright 2005 Elsevier Science Ltd. (pdf 1.8MB)

Ni-Meister, W., Walker, J. P. and Houser, P. R., 2005. Soil Moisture Initialization for Climate Prediction: Characterization of Model and Observation Errors. Journal of Geophysical Research - Atmospheres, 110, D13111, 14pp, doi:10.1029/2004JD005745. Copyright 2005 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 5.54MB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2005. Quantitative Comparison of Spatial Patterns for Hydrological Model Assessment - Some Promising Approaches. Advances in Water Resources, 28(1): 15-32. Copyright 2004 Elsevier Science Ltd. (pdf 564kB)

Foster, J. L., Sun, C., Walker, J. P., Kelly, R. J., Chang, A. T. C., Dong, J. and Powell, H., 2005. Quantifying the Uncertainty in Passive Microwave Snow Water Equivalent Observations. Remote Sensing of Environment, 94(2): 187-203. Copyright 2005 Elsevier Science Ltd. (pdf 1.4MB)

Walker, J. P. and Houser, P. R., 2004. Requirements of a Global Near-Surface Soil Moisture Satellite Mission: Accuracy, Repeat Time, and Spatial Resolution. Advances in Water Resources, 27: 785-801. doi:10.1016/j.advwatres.2004.05.006 Copyright 2004 Elsevier Science Ltd. (pdf 1.16MB)

Walker, J. P., Houser, P. R. and Willgoose, G. R., 2004. Active Microwave Remote Sensing for Soil Moisture Measurement: A Field Evaluation Using ERS-2. Hydrological Processes, 18: 1975-1997. doi:10.1002/hyp.1343 (pdf 385kB)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2004. In-Situ Measurement of Soil Moisture: A Comparison of Techniques. Journal of Hydrology, 293: 85-99. doi:10.1016/j.hydrol.20004.10.008 Copyright 2004 Elsevier Science Ltd. (pdf 577kB)

Sun, C., Walker, J. P. and Houser, P. R., 2004. A Methodology for Snow Data Assimilation in a Land Surface Model. Journal of Geophysical Research - Atmospheres, 109, D08108, doi:10.1029/2003JD003765. Copyright 2004 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 1.19MB)

Rodell, M., Houser, P. R., Jambor, U., Gottschalck, J., Mitchell, K., Meng, C. -J., Arsenault, K., Cosgrove, B., Radakovich, J., Bosilovich, M., Entin, J. K., Walker, J. P., Lohmann D. and Toll, D., 2004. The Global Land Data Assimilation System. Bulletin of the American Meteorological Society, 85(3): 381-394. Copyright 2004 American Meteorologcal Society. (pdf 2.16MB)

Walker, J. P., Houser, P. R. and Reichle, R. H., 2003. New Remote Sensing Technologies Require Advances in Hydrologic Data Assimilation. EOS, Transactions American Geophysical Union, 84(49): 545, 551. Copyright 2003 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 377kB)

Berg, A. A., Famiglietti, J. S., Walker, J. P. and Houser, P. R., 2003. Impact of Bias Correction to Reanalysis Products on Simulations of North American Soil Moisture and Hydrological Fluxes. Journal of Geophysical Research - Atmospheres, 108(D16), 4490, doi:10.1029/2002JD003334. Copyright 2003 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 856kB)

Wooldridge, S. A., Kalma, J. D. and Walker, J. P., 2003. Importance of Soil Moisture Measurements for Inferring Parameters in Hydrologic Models of Low-Yielding Ephemeral Catchments. Environmental Modelling and Software, 18(1): 35-48. Copyright 2003 Elsevier Science Ltd. (pdf 681kB).

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2002. Three-Dimensional Soil Moisture Profile Retrieval by Assimilation of Near-Surface Measurements: Simplified Kalman Filter Covariance Forecasting and Field Application. Water Resources Research, 38(12), 1301, doi:10.1029/2002WR001545. Copyright 2003 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 1.48MB)

Reichle, R. H., Walker, J. P., Koster, R. D. and Houser, P. R., 2002. Extended vs. Ensemble Kalman Filtering for Land Data Assimilation. Journal of Hydrometeorology, 3(6): 728-740. Copyright 2001 American Meteorologcal Society. (pdf 278kB)

Walker, J. P. and Houser, P. R., 2002. Evaluation of the OhmMapper Instrument for Soil Moisture Measurement. Soil Science Society of America Journal, 66(3): 728-734. Copyright 2002 Soil Science Society of America (pdf 139kB)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2001. The Nerrigundah Data Set: Soil Moisture Patterns, Soil Characteristics and Hydrological Flux Measurements. Water Resources Research, 37(11): 2653-2658. Copyright 2001 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 274kB)

Owe, M., de Jeu, R. and Walker, J. P., 2001. A Methodology for Surface Soil Moisture and Vegetation Optical Depth Retrieval Using the Microwave Polarization Difference Index. IEEE Transactions on Geoscience and Remote Sensing, 39(8): 1643-1654. Copyright 2001 IEEE. (pdf 240kB)

Walker, J. P. and Houser, P. R., 2001. A Methodology for Initializing Soil Moisture in a Global Climate Model: Assimilation of Near-Surface Soil Moisture Observations. Journal of Geophysical Research - Atmospheres, 106(D11): 11761-11774. Copyright 2001 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 5.36MB)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2001. One-Dimensional Soil Moisture Profile Retrieval by Assimilation of Near-Surface Measurements: A Simplified Soil Moisture Model and Field Application. Journal of Hydrometeorology, 2(4): 356-373.Copyright 2001 American Meteorologcal Society. (pdf 278kB)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2001. One-Dimensional Soil Moisture Profile Retrieval by Assimilation of Near-Surface Observations: A Comparison of Retrieval Algorithms. Advances in Water Resources. 24(6): 631-650. Copyright 2001 Elsevier Science Ltd. (pdf 570kB)

Walker, J. P. and Willgoose, G. R., 1999. On the Effect of Digital Elevation Model Accuracy on Hydrology and Geomorphology. Water Resources Research, 35(7): 2259-2268. Copyright 1999 American Geophysical Union. Further reproduction or electronic distribution is not permitted.(pdf 969kB)

Journal Papers in Review

Al-Yaari, A., Wigneron, J.-P., Kerr, Y., Rodriguez-Fernandez, N., O'Neill, P., Jackson, T., De Lannoy, G., Al Bitar, A., Mialon, A., Richaume, P., Walker, J. P., Mahmoodi, A. and Yueh, S., Evaluating Soil Moisture Retrievals from ESA's SMOS and NASA's SMAP Brightness Temperature Datasets. Remote Sensing of the Environment.

Azmi, M., Rüdiger, C., Smith, A., Walker, J. P., Comparative Evaluation of Short-term OzFlux Tower Observations and Long-term Landscape Water Balance Data for Weekly Water Stress Monitoring. Geophysical Research Letters, In Review.

Colliander, A., Jackson, T., Bindlish, R., Chan, S., Das, N., Kim, S., Cosh, M., Dunbar, S., Dang, L., Pashaian, L., Asanuma, J., Berg, A., Rowlandson, T., Bosch, D., Caldwell, T., Caylor, K., Goodrich, D., al Jassar, H., Lopez-Baeza, E., Martinez-Fernandez, J., Gonzalez-Zamora, A., Livingston, S., McNairn, H., Pacheco, A., Moghaddam, M., Montzka, C., Notarnicola, C., Niedrist, G., Pellarin, T., Prueger, J., Pulliainen, J., Rautiainen, K., Ramos, J., Seyfried, M., Starks, P., Su, B., Zeng, Y., van der Velde, R., Thibeault, M., Dorigo, W., Vreugdenhil, M., Walker, J., Wu, X., Monerris-Belda, S., O'Neill, P., Entekhabi, D., Njoku, E., and Yueh, S., Validation of SMAP Surface Soil Moisture Products with Core Validation Sites, Remote Sensing of Environment, In Review.

Das, N. N., Entekhabi, D., Dunbar, R. S., Colliander, A., Chen, F., Crow, W., Jackson, T. J., Berg, A., Bosch, D., Caldwell, T., Cosh, M. H., Goodrich, D. C., Lopez-Baeza, E., Moghaddam, M., Rowlands, T., Starks, P. J., Thibeault, M., Walker, J. P., Wu, X., O'Neill, P. E., Yueh, S., Njoku, E. G., The SMAP Mission Combined Active-Passive Soil Moisture Product at 9 km and 3km Spatial Resolutions, IEEE Transactions of Geosciences and Remote Sensing, In Review.

Dharssi, I., Kumar, V., Bally, J., Steinle, P., McJannet, D., Walker, J. P., Verification of Soil Moisture from Multiple Models Over Australia for Fire Danger Rating Application. Water Resources Research, In Review

Dumedah, G. and Walker, J. P., Assessment of Acceptable Forcing Data Uncertainty in the Context of Land Surface Soil Moisture Estimation, Advances in Water Resources, In Review

Gao, Y., Walker, J.P., Ye, N., Monerris, A., Panciera, R., Ryu, D. and Rüdiger, C., Calibration and Validation of the Tau-Omega model with SMAPEx Data Sets for Passive Microwave Soil Moisture Retrieval, IEEE Transactions on Geoscience and Remote Sensing, In Review

Kang, Y., Ozdogan, M., Zipper, S.C., Roman, M.O., Walker, J.P., Hong, S.Y., Marshall, M., Magliulo, E., Moreno, J., Alonso, L., Miyata, A., Kimball, B., and Loheide II, S.P., How Universal is the Relationship between Remotely Sensed Vegetation Indices and Crop Leaf Area Index? A Global Assessment, Remote Sensing of Environment, In Review

Malbeteau Y., Merlin, O., Balsamo, G., Er-Raki, S., Khabba, S., Walker, J. P., Jarlan, L., Towards a Soil Moisture Product at High Spatio-temporal Resolution: Time Interpolation of Spatially-disaggregated SMOS Data Based on High-frequency Precipitation Data, Journal of Hydrometeorology, In Review.

Matic, V., Western, A. W., Walker, J. P., Tyler, M., Determining Vertical Leakage from the Great Artesian Basin, Australia, Through Up-scaling Field Estimates of Phreatic Evapotranspiration. Journal of Hydrology, In Review.

Ouellette, J. D., Johnson, J. T., Balenzano, A., Mattia, F., Satalino, G., Kim, S., Dunbar, S., Colliander, A., Cosh, M. H., Caldwell, T. G., Walker, J. P., and Berg, A. A., A Time-Series Approach to Estimating Soil Moisture from Vegetated Surfaces Using L-band Radar Backscatter, IEEE Transactions on Geoscience and Remote Sensing, In Review

Sawada, Y., Koike, T. Aida, K., Toride, K., and Walker, J. P. Fusing Microwave and Optical Satellite Observations to Simultaneously Retrieve Surface Soil Moisture, Vegetation Water Content, and Surface Soil Roughness. Geoscience and Remote Sensing Letters, In Review

Shahrban, M., Walker, J. P., Wang, Q. J. and Robertson, D., On the Impact of Soil Moisture for Rainfall-Runoff Model Calibration, Hydrological Processes, In Review

Shokri, A., Walker, J. P., van Dijk, A., and Pauwels, V. R. N., A Robust Parameter Uncertainty Quantification Method for Hydrologic Model Calibration, Hydrological Processes, In Review

Tian, S., Tregoning, P., Renzullo, L. J., van Dijk, A. I. J. M., Walker, J. P., and Allgeyer, S., Improved Water Balance Estimation Through Joint Assimilation of GRACE Water Storage and SMOS Soil Moisture Observations, Water Resources Research, In Review

Ye, N., Walker, J. P., Rüdiger, C., Ryu, D., and Gurney, R.J., Surface Rock Effect on Soil Moisture Retrieval from Passive Microwave Observations at L-band, Remote Sensing of Environment, In Review

Ye, N., Walker, J. P., Rüdiger, C., Ryu, D., and Gurney, R. J. Impact of Urban Cover Fraction on SMOS and SMAP Surface Soil Moisture Retrieval, Remote Sensing of Environment, In Review

Yee, M., Walker, J. P., Rüdiger, C., Parinussa, R. M., Koike, T., and Kerr, Y. H., A Comparison of SMOS and AMSR-2 Soil Moisture Using Representative Sites of the OzNet Monitoring Network, Remote Sensing of Environment, In Review

Wigneron, J-P., Kerr, Y., Jackson, T., O'Neill, P., De Lannoy, G., Das, N., Kurum, M., Walker, J. P., Ferrazzoli, P., Schwank, M., de Rosnay, P., Albergel, C. Mironov, V., Munoz, J., Royer, A., Al-Yaari A., Al Bitar, A., Bircher, S., Fernandez-Moran, R., Mialon, A., Parrens, M. and Richaume, P. Recent Advances in the Modelling of Passive Microwave Modelling of Bare Soil and Vegetation-covered Land Surfaces: Application to the SMOS and SMAP Algorithms. Remote Sensing of Environment, In Review

Wright, A. J., Vrugt, J. A., Walker, J. P., Robertson D. E. and Pauwels, V. R. N., Estimating Temporal Rainfall and Model Parameter Distributions Using Model Data Reduction and Inversion Techniques, Water Resources Research, In Review

Wright, A. J., Vrugt, J. A., Walker, J. P., Robertson, D. E. and Pauwels, V. R. N., A Comparison of the Discrete Cosine and Wavelet Transforms for Hydrologic Model Input Data Reduction, Hydrology and Earth System Science, In Review

Zomorrodi, M., Karmakar, N., and Walker, J. P., Fast Imaging Technique for Chipless RFID Tag, Transactions on Microwave Theory Techniques, In Review

Journal Papers in Preparation

Azmi, M., Rüdiger, C. and Walker, J. P., Spatial Monitoring of Weekly Water Stress in Victoria, Australia, Using the Data Fusion Based Drought Index, Journal of Hydrology, In Preparation

Matic, V., Costelloe, J. F., Western, A. W. and Walker, J. P. A Remote Sensing Framework for Estimating Groundwater Discharge in Arid Environments. Remote Sensing of Environment, In Preparation

Rüdiger, C., Willgoose, G. R., Walker, J. P., and Kalma, J. D. Uncertainty in the Representativeness of Soil Moisture Point Observations Within a Semi-arid Catchment in SE Australia. Geophysical Research Letters, In Preparation

Shahrban, M., Walker, J. P. and Wang, Q. J., Application of Satellite-based Soil Moisture Estimations on Streamflow Prediction in the Murrumbidgee Catchment, Journal of Hydrology, In Preparation

Smith, A. B., Walker, J. P., Western, A. W. and McQueen, H., Detecting a Terrestrial Water Storage Signal in Ground-based Gravity Observations from the Field, Water Resources Research, In Preparation

Usowicz, B., Walker, J. P., Lukowski, M. I., Rüdiger, C. and Marczewski, W., Thermal Properties of Soil in the Murrumbidgee River Catchment, In Preparation

Yee, M-S., Ali, E., Pipunic, R., Beringer, J., Daly, E., McCabe, M. F., Pauwels, V. R. N., Rüdiger, C. and Walker, J. P., Validation of Remote Sensing ET Products Based on a Representative Flux Station, In Preparation

Theses/Reports

Ye, N., Walker, J. P., Rüdiger, C., Jackson, T., Wu, X., de Jeu, R., Entekhabi, D., Merlin, O., Kim, E. and Renzullo, L., 2015. The Fifth Soil Moisture Active Passive Experiment (SMAPEx-5): Work Plan. Department of Civil Engineering, Monash University. 147pp (pdf 10.5MB)

Ye, N., Walker, J. P., Rüdiger, C., Jackson, T., Wu, X., de Jeu, R., Entekhabi, D., Merlin, O., Kim, E. and Renzullo, L., 2015. The Fourth Soil Moisture Active Passive Experiment (SMAPEx-4): Work Plan. Department of Civil Engineering, Monash University. 159pp (pdf 10.6MB)

Monerris, A., Walker, J. P., Panciera, R., Jackson, T., Tanas, M., Gray, D. and Ryu, D., 2011. The Third Soil Moisture Active Passive Experiment (SMAPEx-3): Work Plan. Department of Civil Engineering, Monash University. 160pp (pdf 14.5MB)

Panciera, R., Walker, J. P., Ryu, D., Gray, D. and Jackson, T., 2010. The Soil Moisture Active Passive Experiment 2 (SMAPEx-2): Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 133pp (pdf 8.7MB)

Walker, J. P., Rüdiger, C., Peischl, S., Nan, Y., Bandara, R., Allahmoradi, M., Kerr, Y., Kim, E., Gurney, R., Barrett, D. and Le Marshall, J., 2010. Australian Airborne Cal/val Experiments for SMOS (AACES) - Winter Campaign: Experiment Plan. Department of Civil Engineering, Monash University. 171pp (pdf 22.9MB)

Panciera, R., Walker, J. P., Ryu, D., Gray, D. and Jackson, T., 2010. The Soil Moisture Active Passive Experiments (SMAPEx): Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 134pp (pdf 10.2MB)

Walker, J. P., Rüdiger, C., Peischl, S., Allahmoradi, M., Ryu, D., Kerr, Y., Kim, E., Gurney, R., Barrett, D. and Le Marshall, J., 2010. Australian Airborne Cal/val Experiments for SMOS (AACES): Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 208pp (pdf 38.6MB)

Saleh, K., Kerr, Y. H., Escorihuela, M. J., Wigneron, J. P., Richaume, P., Boulet, G., Masiongrande, P., Panciera, R., Walker, J. P., Lopez-Baeza, E., Millan-Scheiding, C. and Juglea, S., 2009. Final Report ESA CoSMOS Data Analysis Study 2007-2008 (RFQ-3-11801/06/NL/FF). European Space Agency. 227pp (pdf 9.9MB)

Wealands, S., Stewardson, M., Gilvear, D., Hacker, J., Walker, J. P., Downes, B. and Rutherford, I., 2008. Remote Sensing of Rivers: A Potential Contribution to the Murray-Darling Basin Sustainable Rivers Audit. Department of Civil and Environmental Engineering, The University of Melbourne. 61pp (pdf 347kB)

Young, R., Walker, J., Yeoh, N., Smith, A., Ellett, K., Merlin, O. and Western, A., 2008. Soil Moisture and Meteorological Observations From the Murrumbidgee Catchment, Department of Civil and Environmental Engineering, The University of Melbourne. (pdf 2.69MB)

Yeoh, N., Walker, J., Young, R., Rüdiger, C., Smith, A., Ellett, K., Pipunic, R. and Western, A., 2008. Calibration of the Murrumbidgee Monitoring Network CS616 Soil Moisture Sensors, Department of Civil and Environmental Engineering, The University of Melbourne. (pdf 717kB)

O'Neill, P. M., Dehaan, R., Walker, J. P. and Hue, I., 2008. Improving the Airborne Remote Sensing of Soil Moisture: Estimating Soil Effective Temperature. Charles Sturt University. 29pp (pdf 803kB)

Barrett, D. J., Kuzmin, V. A., Walker, J. P., McVicar, T. R. and Draper, C., 2008. Improving Stream Flow Forecasting by Integrating Satellite Observations, In Situ Data and Catchment Models Using Model-Data Assimilation Methods. eWater Technical Report. eWater Cooperative Research Centre, Canberra. 59pp (pdf 3.3MB) Peer reviewed

Kuzmin, V. A., Seed, A. W. and Walker J. P., 2007. Australian Government Bureau of Meteorology Forecast and Real-time Observational Hydrometeorological Data for Hydrologic Forecasting. eWater Technical Report. eWater Cooperative Research Centre, Canberra. 29pp (pdf 1.9MB) Peer reviewed

Walker, J. P., Olivier, M. and Panciera, R., 2006. National Airborne Field Experiment 2006: Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 124pp (pdf 7.9MB)

Walker, J. P. and Panciera, R., 2005. National Airborne Field Experiment 2005: Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 105pp (pdf 12.1MB)

Walker, J. P., 1999. Estimating Soil Moisture Profile Dynamics From Near-Surface Soil Moisture Measurements and Standard Meteorological Data. PhD Thesis, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle.

Walker, J. P., 1995. Accuracy of DEMs. Honours Thesis, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle.

Articles and Editorials

Walker, J. P., Kim, E. J., and England, A. W., 2009. Guest Editorial: Introduction to the Special Issue on Airborne Field Campaigns for Soil Moisture, IEEE Geoscience and Remote Sensing Letters, 6(4): 623-624, doi:10.1109/LGRS.2009.2026982. (pdf 90kB)

Walker, J. P., 2002. Soil Moisture Monitoring in the Goulburn River Catchment, Merriwa Landcare Newsletter. (pdf 91kB)

Houser, P. R., Rodell, M., Jambor, U., Gottschalck, J., Cosgrove, B., Radakovich, J., Arsenault, K., Bosilovich, M., Entin, J. K., Walker, J. P., Mitchell, K., Pan, H. L. and Meng, C.-J., 2001. The Global Land Data Assimilation System, GEWEX News, 11(2): 11-13. (pdf 2.41MB)

Peer Reviewed Conference Papers

Zhang, Y., Li, Y., Walker, J.P., Pauwels, V.R.N. and Shahrban, M., 2015. Towards Operational Hydrological Model Calibration Using Streamflow and Soil Moisture Measurements. In Weber, T., McPhee, M.J. and Anderssen, R.S. (eds) MODSIM2015, 21st International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, November 29 - December 4, 2015, pp.2089-2095. ISBN: 978-0-9872143-5-5 (pdf 1.67MB)

Ouellette, J. D., Johnson, J. T., Balenzano, A., Mattia, F., Satalino, G., Kim, S., Walker, J. P., Panciera, R., 2014. A Study of Soil Moisture Estimation from Multi-Temporal L-band Radar Observations of Vegetated Surfaces, 10th European Conference on Synthetic Aperture Radar (EUSAR14), Berlin, Germany, 3-5 June, 2014.

Disseldorp, D. A., Yee, M., Monerris, A. and Walker, J. P., 2013. A Temporal Stability Analysis of The Australian SMAP Mission Validation Site. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.2869-2875. ISBN: 978-0-9872143-3-1. (pdf 1.70MB)

Dumedah, G., Walker, J. P., and Mililli, B., 2013. Examining The Impact of Scale Variations on Soil Moisture Downscaling Using Temporal Persistence. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.3078-3084. ISBN: 978-0-9872143-3-1. (pdf 1.31MB)

Dumedah, G. and Walker, J. P., 2013. Joint Model State-Parameter Retrieval Through The Evolutionary Data Assimilation Approach. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.2876-2882. ISBN: 978-0-9872143-3-1. (pdf 1.38MB)

Elhassan, S., Wu, X. and Walker, J. P., 2013. Standing Water Detection Using Radar. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.3085-3091. ISBN: 978-0-9872143-3-1. (pdf 2.66MB)

Gao, Y., Walker, J. P., Panciera, R., Monerris A. and Ryu, D, 2013. Retrieval of Soil Surface Roughness from Active and Passive Microwave Observations. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.3092-3098. ISBN: 978-0-9872143-3-1. (pdf 1.33MB)

Moghaddam, N. F., Rüdiger, C., Samsonov, S., Walker, J. P. and Hall, M., 2013. An Assessment of DInSAR Potential for Simulating Geological Subsurface Structure. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.3099-3105. ISBN: 978-0-9872143-3-1. (pdf 1.53MB)

Wu, X., Walker, J. P., Rüdiger, C., Panciera, R. and Das, N. N., 2013. Downscaling of Coarse-resolution Radiometer Brightness Temperature by High-resolution Radar Backscatter. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.3127-3133. ISBN: 978-0-9872143-3-1. (pdf 2.96MB)

Yee, M., Walker, J. P., Dumedah, G., Monerris, A. and Rüdiger, C., 2013. Towards Land Surface Model Validation from Using Satellite Retrieval Soil Moisture. In Piantadosi, J., Anderssen, R.S. and Boland J. (eds) MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 1-6, 2013, pp.2890-2896. ISBN: 978-0-9872143-3-1. (pdf 1.51MB)

Walker, J. P., Dumedah, G., Monerris, A., Gao, Y., Rüdiger, C., Wu, X., Panciera, R., Merlin, O., Pipunic, R., Ryu, D., and Zreda, M., 2012. High Resolution Soil Moisture Mapping. 5th Global Workshop on Digital Soil Mapping. Sydeny, Australia, 10-13 April, 2012. (pdf 584kB). Invited Keynote

Gao, Y., Walker, J. P., Ryu, D., Panciera, R. and Monerris, A., 2011. Validation of a τ-ω Model with Soil Moisture Active Passive Experiment (SMAPEx) Data Sets in Australia. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 1944-1950. (pdf 1.59MB)

Rüdiger, C., Walker, J. P., Kerr, Y. H., Mialon, A., Merlin, O. and Kim, E. J., 2011. Validation of the Level 1c and Level 2 SMOS Products with Airborne and Ground-based Observations. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 2002-2008. (pdf 604kB)

Matic, V., Costelloe, J. F., Western, A. W., Walker, J. P. and Tyler, S. W., 2011. Evaluating SEBAL for Estimating Arid Zone Shallow Groundwater Discharge. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 1966-1972. (pdf 2.33MB)

Teluguntla, P., Ryu, D., George, B. and Walker, J. P., 2011. Impact of Spatial Scale on Remotely Sensed Evapotranspiration Estimates from Heterogeneous Land Surfaces. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 2016-2022. (pdf 2.50MB)

Wu, X., Walker, J. P., Rüdiger, C., Panciera, R., Monerris, A. and Das, N. N., 2011. Towards Medium-resolution Brightness Temperature Retrieval from Active and Passive Microwave. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 2023-2029. (pdf 437kB)

Monerris, A., Walker, J. P., Panciera, R., Jackson, T. J., Gray, D., Yardley, H. and Ryu, D., 2011. The Third Soil Moisture Active Passive Experiment. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 1980-1986. (pdf 578kB)

Pipunic, R. C., McColl, K. A., Ryu, D. and Walker, J. P., 2011. Can Assimilating Remotely-sensed Surface Soil Moisture Data Improve Root-zone Soil Moisture Predictions in the CABLE Land Surface Model? In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 1994-2001. (pdf 1.62MB)

McColl, K. A., Pipunic, R. C., Ryu, D. and Walker, J. P., 2011. Validation of the MODIS LAI Product in the Murrumbidgee Catchment, Australia. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 1973-1979. (pdf 852kB)

Peischl, S., Ye, N., Walker, J. P., Ryu, D. and Kerr, Y. H., 2011. Soil Moisture Retrieval from Multi-incidence Angle Observations at L-band. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 1987-1993. (pdf 1.97MB)

O'Neill, P. M., Dehaan, R. and Walker, J. P., 2011. Diurnal Temperature Profile Impacts on Estimating Effective Soil Temperature at L-band. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 3377-3383. (pdf 319kB)

Shahrban, M., Walker, J. P., Wang, Q. J., Seed, A. and Steinle, P., 2011. Comparison of Weather Radar, Numerical Weather Prediction and Gauge-based Rainfall Estimates. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 3384-3390. (pdf 596kB)

Smith, A. B., Walker, J. P. and Western, A. W., 2011. Variational Gravity Data Assimilation to Improve Soil Moisture Prediction in a Land Surface Model. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 3391-3397. (pdf 194kB)

Ye, N., Walker, J. P., Rüdiger, C., Ryu, D. and Gurney, R. J., 2011. The Effect of Urban Cover Fraction on the Retrieval of Space-borne Surface Soil Moisture at L-band. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 3398-3404. (pdf 1.57MB)

Bandara, H. R. S., Walker, J. P., Rüdiger, C., Pipunic, R. C., Dharssi, I. and Gurney, R. J., 2011. Towards Soil Hydraulic Parameter Retrieval from Land Surface Models Using Near-surface Soil Moisture Data. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 3342-3348. (pdf 711kB)

Costelloe, J. F., Matic, V., Western, A. W., Walker, J. P. and Tyler, M., 2011. Field Estimates of Groundwater Discharge-Great Artesian Basin, South Australia. In Chan, F., Marinova, D. and Anderssen, R. S. (eds) MODSIM2011, 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 12-16 2011, pp. 2100-2106. (pdf 1.19MB)

Ershadi, A., McCabe, M. F., Evans, J. P. and Walker, J. P., 2011. Evaluation of Energy Balance, Combination, and Complementary Schemes for Estimation of Evaporation. Proceedings of IAHS Lead Symposia, IUGG2011, Melbourne, Australia, July 2011. (pdf 461kB)

Chai, S. S., Walker, J. P., Veenendaal, B. and West, G., 2011. An Artificial Neural Network Model for Downscaling of Passive Microwave Soil Moisture. The 6th IASME/WSEAS International conference on Water Resources, Hydraulics & Hydrology, Cambridge, UK, 23-25 February, 2011. (pdf 502kB)

Teluguntla, P., Ryu, D., George, B. and Walker, J. P., 2010. Long-term product of Evapotranspiration Using AVHRR in the Krishna River Basin, India. 15 ARSPC Australasian Remote Sensing & Photogrammetry Conference, 13-17 September 2010, Alice Springs, Australia. (pdf 813kB)

Chai, S. -S., Veenendaal, B., West, G. and Walker, J. P., 2009. Input Parameters Selection for Soil Moisture Retrieval Using an Artificial Neural Network. In Ostendorf, B., Baldock, P., Bruce, D., Burdett, M., and Corcoran, P., (eds) Surveying & Spatial Sciences Institute Biennial International Conference, Adelaide Sept 2009, pp. 1181-1194. (pdf 242kB)

Summerell, G., Wilford, J., Shoemark, V., Grant, S., and Walker, J. P., 2009. High Resolution Passive Microwave Response to Landscape Controls Influencing Soil Moisture Patterns: A Case Study for the Livingstone Creek Catchment. In Anderssen, R. S., R. D. Braddock and L. T. H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 2528-2533. (pdf 656kB)

Azcurra, C. and Walker, J. P., 2009. Towards SMOS Validation in South-eastern Australia. In Anderssen, R. S., R. D. Braddock and L. T. H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3675-3681. (pdf 499kB)

Peischl, S., Walker, J. P., Allahmoradi, M., Barrett, D., Gurney, R., Kerr, Y., Kim, E., LeMarshall, J., Rüdiger, C., Ryu D., and Ye N., 2009. Towards Validation of SMOS Using Airborne and Ground Data Over the Murrumbidgee Catchment. In Anderssen, R. S., R. D. Braddock and L. T. H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3733-3739. (pdf 576kB)

Rüdiger, C., Walker, J. P., Allahmoradi, M., Barrett, D., Costelloe, J., Gurney, R., Hacker, J., Kerr, Y. H., Kim, E., Le Marshall, J., Lieff, W., Marks, A., Peischl, S., Ryu, D., and Ye, N., 2009. Identification of Spaceborne Microwave Radiometer Calibration Sites for Satellite Missions. In Anderssen, R. S., R. D. Braddock and L. T. H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3740-3746. (pdf 875kB)

Ye, N., Walker, J. P., Panciera, R., Ryu, D., Rüdiger, C., and Gurney, R. J., 2009. The Effect of Rock Cover Fraction on the Retrieval of Surface Soil Moisture at L-band. In Anderssen, R. S., R. D. Braddock and L. T. H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3761-3767. (pdf 391kB)

Costelloe, J. F., Matic, V., Western, A. W., and Walker, J. P., 2009. Framework for Incorporating Spectral Observations into Steady State Analysis of Groundwater Discharge Around the Margins of the Great Artesian Basin. In Anderssen, R. S., R. D. Braddock and L. T. H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3690-3696. (pdf 623kB)

Costelloe, J. F., Irvine, E. C., Western, A. W., Matic, V., Walker, J. P. and Tyler, M., 2008. Quantifying Near-surface Diffuse Groundwater Discharge Along the South-west Margin of the Great Artesian Basin, Proceedings of the Water Down Under 2008 incorporating 31st Hydrology and Water Resources Symposium and 4th International Conference on Water Resources and Environment Research [CD-ROM]. The Institute of Engineers Australia, Adelaide, Australia, 14-17 April, 2008, pp. 831-840. (pdf 484kB)

Walker, J. P., and 62 others, 2007. The National Airborne Field Experiment Data Sets. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 2625-2631. ISBN : 978-0-9758400-4-7 (pdf 956kB)

Panciera, R., Walker, J. P., Kim, E., Kalma, J. and Merlin, O., 2007. Effect of Spatial Scale on Soil Moisture Retrieval From Passive Microwave Sensors. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 2576-2582. ISBN : 978-0-9758400-4-7 (pdf 1.8MB)

Merlin, O., Walker, J. P., Panciera, R., Young, R., Kalma, J. D. and Kim, E. J., 2007. Calibration of a Soil Moisture Sensor in Heterogeneous Terrain with the National Airborne Field Experiment (NAFE) Data. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 2604-2610. ISBN : 978-0-9758400-4-7 (pdf 773kB)

Draper, C. S., Walker, J. P. and Steinle, P. J., 2007. Remotely Sensed Soil Moisture over Australia from AMSR-E. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, 7pp. ISBN : 978-0-9758400-4-7 (pdf 195kB)

Pipunic, R. C., Walker, J. P., Trudinger, C. and Western, A. W., 2007. Effect of One-Dimensional Field Data Assimilation on Land Surface Model Flux Estimates with Implications for Improved Numerical Weather Prediction. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 1736-1742. ISBN : 978-0-9758400-4-7 (pdf 815kB)

Walker, J. P., Merlin, O., Panciera, R. and Kalma, J. D., 2006. National Airborne Field Experiments for Soil Moisture Remote Sensing, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 592kB)

Panciera, R., Walker, J. P., Merlin, O., Kalma, J. D. and Kim, E. J., 2006. Scaling Properties of L-band Passive Microwave Soil Moisture: From SMOS to Paddock Scale, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 317kB)

Maggioni, V., Panciera, R., Walker, J. P., Rinaldi, M. and Paruscio, V., 2006. A Multi-Sensor Approach for High Resolution Airborne Soil Moisture Mapping, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 148kB)

Smith, A. B., Walker, J. P. and Western, A. W., 2006. Detection of a Soil Moisture and Groundwater Signal in Ground-Based Gravity Observations, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 408kB) Best Paper

Lymburner, L., Hairsine, P. B., Walker, J. P. and Held, A. A., 2006. A Method to Identify Likely Sites for Denitrification in Semi-Arid Floodplain Rivers, 9th International River Symposium [CD-ROM]. Brisbane, Australia, 4-7 September, 2006. (pdf 116kB)

Walker, J. P., Hacker, J. M., Kalma, J. D., Kim, E. J. and Panciera, R., 2005. National Airborne Field Experiments for Prediction in Ungauged Basins. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2974-2980. (pdf 832kB)

Savige, C., Western, A., Walker, J. P., Kalma, J. D., French, A. and Abuzar, M., 2005. Obtaining Surface Energy Fluxes from Remotely Sensed Data. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2946-2952. (pdf 309kB)

Ellett, K., Walker, J. P., Rodell, M., Chen, J. and Western, A., 2005. GRACE Gravity Fields as a New Measure for Assessing Large-scale Hydrological Models. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2911-2917. (pdf 403kB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2005. Utilising Tolerances When Assessing Models Using Spatial Fields. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2547-2553. (pdf 665kB)

Rüdiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2005. Root Zone Soil Moisture Retrieval Using Streamflow and Surface Moisture Data Assimilation in Nested Catchments. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 1458-1464. (pdf 488kB)

Nguyen, H. T. and Walker, J. P., 2005. The Effect of Irrigation Schedules on Water Table Depth and Root Zone Soil Moisture. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 1286-1292. (pdf 348kB)

Turner, M., Walker, J. P., Oke, P. and Grayson R. B., 2005. Assimilation of Sea-surface Temperature into a Hydrodynamic Model of Port Phillip Bay, Australia, 2005 Coasts and Ports Australasian Conference [CD-ROM]. Adelaide, Australia, 21-23 September, 2005. (pdf 400kB)

Ellett, K. M., Walker, J. P., Western, A. W., Grayson, R. B., Smith, A. and Rodell, M., 2005. Can the GRACE Satellite Mission Help in the Murray-Darling Basin?, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 347kB)

Smith, A. B., Walker, J. P., Western, A. W. and Ellett, K. M., 2005. Using Ground-Based Gravity Measurements to Monitor Changes in Terrestrial Water Storage, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 290kB)

Savige, C. L., French, A. N., Western, A. W., Walker, J. P., Abuzar, M., Hacker, J. M. and Kalma, J. D., 2005. Remote Sensing Estimates of Actual Evapotranspiration in an Irrigation District, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 372kB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2005. Quantitative Measures for the Local Similarity of Hydrological Spatial Patterns, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 323kB)

Lymburner, L., Hairsine, P. B., Walker, J. P. and Held, A. A., 2004. Predicting the Recruitment of Large Woody Debris Throughout a Watershed, In: Lowrance, R. (Ed.), Proceedings of Riparian Ecosystems and Buffers: Multi-scale Structure, Function, and Management. American Water Resources Summer Specialty Conference, Olympic Valley, USA, 28-30 June, 2004. (pdf 227kB)

Lymburner, L., Hairsine, P. B., Walker, J. P. and Held, A. A., 2004. Predicting Riparian Zone Functions Using Remote Sensing, In: Lowrance, R. (Ed.), Proceedings of Riparian Ecosystems and Buffers: Multi-scale Structure, Function, and Management. American Water Resources Summer Specialty Conference, Olympic Valley, USA, 28-30 June, 2004. (pdf 219kB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2004. Investigating Spatial Pattern Comparison Methods for Distributed Hydrological Model Assessment, In: C. Pahl, S. Schmidt and T. Jakeman(Ed.), Proceedings of iEMSs 2004 International Congress: Complexity and Integrated Resources Management. International Environmental Modelling and Software Society, Osnabrieck, Germany, 14-17 June, 2004, [CD-ROM]. (pdf 150 kB)

Walker, J. P., Ursino, N., Grayson, R. B., and Houser, P. R., 2003. Australian Root Zone Soil Moisture: Assimilation of Remote Sensing Observations, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:380-385. (pdf 649 kB)

Lymburner, L., Hairsine, P. B., Held, A. A., and Walker, J. P., 2003. Indicies for Assessing the Spatial Distribution and Function of Riparian Buffer Zones, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:350-355. (pdf 210 kB)

Rüdiger, C., Davidson, R. E., Hemakumara, M., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2003. Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:386-391. (pdf 513 kB)

Wealands, S., Grayson, R. B. and Walker, J. P., 2003. Hydrologic Model Assessment from Automated Spatial Pattern Comparison Techniques, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:416-421. (pdf 227 kB)

Walker, J. P. and Houser, P. R., 2002. Soil Moisture Estimation Using Remote Sensing. 27th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Melbourne, Australia, 20 - 23 May, 2002, 8pp. (pdf 186 kB) animation (avi 8.1MB) (Slides)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 1999. Recent Advances in Profile Soil Moisture Retrieval. In: W. Boughton (Ed.), Proceedings of the Water 99 Joint Congress; 25th Hydrology and Water Resources Symposium; and 2nd International Conference on Water Resources and Environmental Research. The Institute of Engineers Australia, Brisbane, Australia, 6 - 8 July, 1999, 373-378. (pdf 237 kB)

Conference Papers

Alonso-Arroyo, A., Camps, A., Monerris, A., Rüdiger, C., Walker, J. P., Forte, G., Pascual, D., Park, H., Onrubia, R., 2014. The Light Airborne Reflectometer for GNSS-R Observations (LARGO) Instrument: Initial Results From Airborne and Rover Field Campaigns. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Quebec, Canada, 13-18 July, 2014. (pdf 8MB)

Alonso-Arroyo, A., Camps, A., Monerris, A., Rüdiger, C., Walker, J. P., Forte, G., Pascual, D., Park, H., Onrubia, R., 2014. The Dual Polarization GNSS-R Interference Pattern Technique. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Quebec, Canada, 13-18 July, 2014. (pdf 427kB)

Fieber, K., Davenport, I., Tanase, M., Ferryman, J. M., Gurney, R., Walker, J. P., Hacker, J., 2013. Waveform and Discrete LiDAR Effective LAI Estimates: Sensitivity Analysis. SilviLaser Conference, Beijing, China, 9-11 October, 2013. (pdf 881 kB)

Materns, B., Lievens, H., Walker, J. P., Panciera, R., Tanase, M., Monerris, A., Gao, Y., Wu, X., and Verhoest, N. E. C., 2013. An Alternative Roughness Parameterization for Soil Moisture Retrievals from Passive Microwave Observations. ESA Living Planet Symposium, Edinburgh, 9-13 September, 2013. (pdf 143kB)

Panciera, R., Tanase, M., Lowell, K. and Walker, J. P., 2013. Multi-temporal soil Moisture Retrieval Using Synthetic Aperture Radar (SAR). ESA Living Planet Symposium, Edinburgh, 9-13 September, 2013. (pdf 77kB)

Dumedah, G., Walker, J. P. and Rüdiger, C., 2013. Do SMOS Brightness Temperatures Approximate to the Reported 15km Discrete Global Grid? IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 92kB). Invited

Dumedah, G. and Walker, J. P., 2013. Re-thinking Sensitivity of Model Parameter Values in Soil Moisture Assimilation using The Evolutionary Data Assimilation. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 133kB)

Fieber,K., Davenport, I., Tanase, M., Ferryman, J. M., Gurney, R. J., Walker, J. P. and Hacker, J. M., 2013. Preliminary Leaf Area Index Estimates from Airborne Small Footprint Full-waveform LIDAR Data. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 187kB)

Gao, Y., Walker, J. P., Ryu, D. and Monerris, A., 2013. Intercomparison of Surface Roughness Parameterizations for Soil Moisture Retrieval. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 561kB)

Lievens, H., Al Bitar, A.,De Lannoy, G., Dumedah, G., Hendricks-Franssen, H., Kerr, Y., Tomer, S., Merlin, O., Pan, M., Roundy, J., Sahoo, A., van den Berg, M., Vereecken, H., Verhoest, N., Walker, J. P., Wood, E. and Pauwels, V., 2013. Assimilation of SMOS Data for Improving Surface Water Management. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 95kB). Invited

Lievens, H., Pauwels, V., Al Bitar, A., Cabot, F., De Lannoy, G., Dumedah, G., Kerr, Y.,Pan, M., Walker, J. P., Wood, E. and Verhoest, N., 2013. Simulation of SMOS Brightness Temperatures over the Upper Mississippi (USA) and Murray Darling (Australia) Basins. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 93kB). Invited

Monerris, A., Rüdiger, C., Wigneron, J., Walker, J. P. and Gao, Y., 2013. High Resolution Soil Moisture Estimates over The Murrumbidgee Catchment Using Airborne AACES Data. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 1.73MB)

Panciera, R., MacGill, F., Tanase, M., Lowell, K. and Walker, J. P., 2013. Sensitivity of TerraSAR X-band Data to Surface Parameters in Bare Agricultural Areas. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 502kB)

Peischl, S., Ye, N., Walker, J. P., Ryu, D. and Kerr, Y., 2013. Assessing the Angular Density of Passive Microwave L-band Data. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 109kB)

Rüdiger, C., Albergel, C., Dharssi, I., Dumedah, G., Kerr, Y., Merlin, O., Renzullo, L. and Walker, J. P., 2013. Applications of SMOS Data in Australia. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 374kB). Invited

Satalino, G., Mattia, F., Balenzano, A., Panciera, R. and Walker, J. P., 2013. Soil Moisture Maps from Time Series of PALSAR-1 ScanSAR Data over Australia. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 1MB)

Tanase, M., Panciera, R., Lowell, K., Hacker, J. M. and Walker, J. P., 2013. Estimation of Forest Biomass from L-band Polarimetric Decomposition Components. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 292kB)

Vittucci, C, Guerriero, L., Ferrazzoli, P., Rahmoune, R., Tanase, M., Panciera, R., Monerris, A., Rüdiger, C. and Walker, J. P., 2013. Airborne Forest Monitoring during the SMAPEx-3 Campaign. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 422kB)

Walker, J. P., Kim, E., Hacker, J. M., Goodberlet, M., Panciera and Rüdiger, C., 2013. The Polarimetric L-band Multi-beam Radiometer. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 912kB). Invited

Wu, X., Walker, J. P., Das, N., Panciera, R. and Rüdiger, C., 2013. Towards A Medium Resolution Brightness Temperature Product from Active and Passive Microwave Observations. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 21-26 July, 2013. (pdf 321kB). Invited

Tanase, M. A., Panciera, R., Lowell, K., Garcia-Martin, A., and Walker, J. P., 2012. L-band SAR Backscatter Sensitivity to Forest Structure in Semi-arid Environments: Biomass Retrieval Error Analysis at Plot Level. ForestSAT 2012, Oregon, USA, 11-14 September, 2012.

Walker, J. P., O'Neill, P., Wu, X., Gao, Y., Monerris, A., Panciera, R., Jackson, T., Gray, D. and Ryu, D., 2012. An Airborne Simulation of The SMAP Data Stream. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. (pdf 378kB). Invited

Rüdiger, C., Walker, J. P., Kerr, Y. H., Mialon, A., Merlin, O. and Kim, E. J., 2012. SMOS L1C and L2 Validation in Australia. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. (pdf 517kB). Invited

Pauwels, V. R. N., Lievens, H., Verhoest, N. E. C., De Lannoy, G., Plaza Guingla, D. A., van den Berg, M. J., Kerr, Y., Al Bitar, A., Merlin, O., Cabot, F., Gascoin, S., Wood, E., Pan, M., Sahoo, A., Walker, J., Dumedah, G. and Drusch, M., 2012. On The Assimilation of Multi-angular SMOS Data into A Coupled Land Surface and Radiative Transfer Model for Improving Surface Water Management. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. (pdf 108kB)

Bandara, H. R. S., Walker, J. P., Rüdiger, C. and Gurney, R., 2012. Towards Soil Hydraulic Parameter Retrieval from A Land Surface Model under Different Meteorological Conditions. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. (pdf 88kB)

Ye, N., Walker, J. P. and Rüdiger, C., 2012. A Cumulative Distribution Function Based (CDF-based) Method for Normalizing Multi-beam Microwave Observations. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. (pdf 543kB)

Peischl, S., Walker, J. P., Rüdiger, C., Ryu, D. and Kerr, Y., 2012. SMOS Multi-incidence Angle Observations over Australia. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. (pdf 562kB)

Satalino, G., Mattia, F., Balenzano, A., Panciera, R. and Walker, J. P., 2012. COSMO-SkyMed SAR Multi-temporal Data for Landcover Classification and Soil Moisture Retrieval over Agricultural Sites in Southern Australia. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. (pdf 343kB)

Gray, D., Yardley, H., Yang, R., Walker, J. P., Bates, B., Panciera, R., Hacker, J., McGrath, A. and Goh, A., 2011. PLIS: An Airborne Polarimetric L-band Interferometric Synthetic Aperture Radar. Asia-Pacific International Conference on Synthetic Aperture Radar APSAR 2011, Seoul, Korea, 26-30, September, 2011. (pdf 328kB)

Rüdiger, C., Walker, J. P., Kerr, Y. H., Merlin, O. and Mialon, A., 2011. Validation of SMOS L1C and L2 Products with Airborne and In-situ Observations across South-eastern Australia. 2011 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Vancouver, Canada, 24-29 July, 2011. (pdf 416kB)

Rüdiger, C., Walker, J. P. and Kerr, Y. H., 2011. Validation of Microwave Remote Sensing Products over Australia. 34th International Symposium on Remote Sensing of Environment, Sydney, Australia, 10-15 April, 2011. (pdf 824kB)

Ershadi, A., McCabe, M. F., Evans, J. P., Walker, J. P. and Pipunic, R., 2011. Estimation of Evaporation Using the Surface Energy Balance System (SEBS) and Numerical Models. 34th International Symposium on Remote Sensing of Environment, Sydney, Australia, 10-15 April, 2011. (pdf 674kB)

Jackson, T., Cosh, M., Crow, W., Colliander, A. and Walker, J. P., 2011. In-Situ Validation of the Soil Moisture Active Passive (SMAP) Satellite Mission. 34th International Symposium on Remote Sensing of Environment, Sydney, Australia, 10-15 April, 2011. (pdf 105kB)

Merlin, O., Rüdiger, C., Richaume, P., Al Bitar, A., Mialon, A., Walker, J. P. and Kerr, Y., 2010. Disaggregation as a Top-down Approach for Evaluating 40 km Resolution SMOS Data Using Point-scale Measurements: Application to AACES-1, In: C. M.U.Neale and A. Maltese (Eds), Proceedings of SPIE: Remote Sensing for Agriculture, Ecosystems, and Hydrology XII (Volume 7824), Toulouse, France, 20-23 September, 2010. (pdf 840kB)

Peischl, S., Walker, J. P., Ryu, D., Kerr, Y. and Rüdiger, C., 2010. Towards Multi-incidence Angle Passive Microwave Retrieval of Soil Moisture. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010.

Walker, J. P., Panciera, R., Ryu, D., Gray, D. and Jackson, T. J., 2010. SMAPEx: Soil Moisture Active Passive Remote Sensing Experiment for SMAP Algorithm Development. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010. Invited

Jackson, T. J., Cosh, M., Bindlish, R., Crow, W., Colliander, A., Njoku, E., McDonald, K., Kimball, J. S., Belair, S., Walker, J. P., Panciera, R., Entekhabi, D., O'Nell, P., 2010. Soil Moisture Active Passive (SMAP) Calibration and Validation Plan and Current Activities. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010.

McColl, K. A., Ryu, D., Matic, V. and Walker, J. P., 2010. Salinity Effects on L-band Microwave Remote Sensing of Soil Moisture. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010.

Walker, J. P., Peischl, S., Allahmoradi, M., Rüdiger, C., Ryu, D., Ye, N., Barett, D., Gurney, R., Kerr, Y., Kim, E. and Le Marshall, J., 2010. Validation of SMOS: Some First Results. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010. Invited

Walker, J. P., Rüdiger, C., Kerr, Y. H., Kim, E. J., Gurney, R., Barrett, D. and Le Marshall, J., 2010. A Calibration Site in the Australian Desert for SMOS. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010.

Calvet, J. -C., Albergel, C., Zakharova, E., Fritz, N., Szczypta, C., Barbu, A., Lafont, S., Mahfouf, J. -F., Wigneron, J. -P., Novello, N., Kerr, Y., Mialon, A., Zribi, M., Pardé, M., Walker, J. P., Rüdiger, C., 2010. Verification and Assimilation of the SMOS Data. Proceedings of the ESA Living Planet Symposium, Bergen, Norway, 28 June-2 July, 2010.

Rahmoune, R., Ferrazzoli, P., Walker J. P. and Grant, J. P., 2010. L-band Emission from a Eucalyptus Forest in Various Soil Conditions During the NAFE Campaign. Proceedings of the 11th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, Washington, DC, United States, 1-4 Mar, 2010. (pdf 396kB)

Matic, V., Costelloe, J. F., Western A., and Walker J. P., 2008. Characterising the Spectral Signal of Discharge Zones at the Margin of the Great Artesian Basin. Proceedings of the 14th Australasin Remote Sensing and Photogrammetry Conference, Darwin, Australia, 30 Sept - 2 Oct, 2008. (pdf 225kB)

Walker J. P., Panciera, R., and Kim, E., 2008. High Resolution Airborne Soil Moisture Mapping. Proceedings of the 14th Australasin Remote Sensing and Photogrammetry Conference, Darwin, Australia, 30 Sept - 2 Oct, 2008. (pdf 195kB)

Chai, S. -S., Veenendaal, B., West, G., and Walker J. P., 2008. Backpropagation Neural Network for Soil Moisture Retrieval Using NAFE'05 Data: A Comparison of Training Algorithms. Proceedings of the International Society for Photogrammetry and Remote Sensing (ISPRS) XXIth Congress (Volume XXXVII, Part B4), Beijing, China, 3-11 July, 2008. (pdf 718kB)

Walker J. P., Panciera, R., and Kim E., 2008. High Resolution Airborne Soil Moisture Mapping. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 247kB)

Panciera, R., Walker J. P., Kim E., and Kalma, J., 2008. Application of a Bayesian Approach for Downscaling of SMOS Observations. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 271kB)

Grant, J. P., Wigneron, J. -P., Panciera, R., Saleh, K., Walker J. P., and Van de Griend, A. A., 2008. Influence of Forest Cover on L-band Soil Moisture Retrieval from Heterogeneous Pixels. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 102kB)

Chai, S. -S., Veenendaal, B., West, G., Walker J. P., and Metternicht, G., 2008. Explicit Inverse of Soil Moisture Retrieval with Artificial Neural Network Using Passive Microwave Remote Sensing. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 177kB)

Chai, S. -S., Veenendaal, B., West, G., Walker J. P., and Metternicht, G., 2008. Input Pattern According to Standard Deviation of Backpropogation Neural Network: Influence on the Accuracy for Soil Moisture Retrieval. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 232kB)

Saleh, K., Boulet, G., Kerr, Y. H., Massiongrande, P., Richaume, P., Wigneron, J., -P., Delwart, S., Panciera, R., and Walker J. P., 2008. Validation of the SMOS Level 2 Retrieval Algorithm Over Crops and Prairies From the CoSMOS-NAFE Campaign. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 76kB)

Mladenova, I., Lakshmi, V., Jackson, T., and Walker J. P., 2008. Ku-Band Sensitivity to Soil Moisture: An Evaluation Study for Monitoring Temporal Soil Moisture Change Detection Over the NAFE'06 Study Area. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 109kB)

Draper, C., Walker, J. P. and Steinle, P., 2008. An Evaluation of AMSR-E Soil Moisture Retrievals Over Australia, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 1.4MB)

Merlin, O., Walker, J. P. and Teuling, R., 2008. Measurement Accuracy Versus Observation Scale In A Multi-Resolution Data Assimilation Framework, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 815kB)

Panciera, R., Walker, J. P., Kim, E., Kalma, J., and Merlin, O., 2008. Multi-resolution Soil Moisture Retrieval from Passive Microwave Sensors: A Preliminary Study, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 822kB)

Kuzmin, V., and Walker, J. P., 2008. The Stochastic Filter for Asymmetrically Distributed Streamflow, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 393kB)

Pipunic, R., Walker, J. P. and Western, A., 2008. One-Dimensional Field Data Assimilation into a Land Surface Model for Improved Heat Flux Estimates, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 1.1MB)

Boulet, G., Walker, J. P., Maisongrande, P., Saleh, K., Rüdiger, C., Gruhier, C., de Rosnay, P., Panciera, R., Merlin, O., Kalma, J. and Kerr, Y., 2008. Exploitation of the NAFE'05 Campaign for Cal/Val Activities of the SMOS Mission. In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 659kB)

Walker, J. P., Barrett, D., Gurney, R., Kalma, J., Kerr, Y., Kim, E., and LeMarshall, J., 2007. MoistureMap: A Soil Moisture Monitoring, Prediction and Reporting System for Sustainable Land and Water Management, Proceedings of the First CAWCR Workshop: Physical Processes and Modelling of the Water and Carbon Cycle, BMRC Research Report No. 133, pg. 9-12. Melbourne, Australia, 27-29 November, 2007. (pdf 67kB) Invited

Draper, C. S., Walker, J. P., and Steinle, P. J., 2007. An Evaluation of Remotely Sensed Soil Moisture Over Australia, Proceedings of the First CAWCR Workshop: Physical Processes and Modelling of the Water and Carbon Cycle, BMRC Research Report No. 133, pg. 5-8. Melbourne, Australia, 27-29 November, 2007. (pdf 91kB) Invited

Saleh, K., Floricioiu D., Kerr Y. H., Boulet G., Maisongrande P., de Rosnay P., Wigneron J. -P., Cano A., López-Baeza E., Grant J., Balling J., Skou N., Berger M., Delwart S., Wursteisen P. and Walker J. P., 2007. The CoSMOS L-band Experiment in Southeast Australia. International Geoscience and Remote Sensing Symposium (IGARSS), Barcelona, Spain, 23-27 July, 2007. (pdf 356kB)

Stewardson, M., Walker, J. P., Kan, M., Kitchen, L., Hacker, J., Ghadirian, P. and Scholz, G., 2007. Using Airborne Scanners to Map Pools in Rivers, 5th Australian Stream Management Conference [CD-ROM]. Charles Sturt University Institute for Land, Water and Society, Albury, Australia, 22-25 May, 2007. (pdf 3.6MB)

Kim, E. J., Walker, J. P., Panciera, R. and Kalma, J. D., 2006. The Australian National Airborne Field Experiment 2005: Soil Moisture Remote Sensing at 60 Meter Resolution and Up. International Geoscience and Remote Sensing Symposium (IGARSS), Denver, United States, 31 July - 4 August, 2006.

Walker, J. P., 2005. Land Surface Model Data Assimilation for Atmospheric Prediction, Proceedings of the Hydrometeorological Applications of Weather and Climate Modelling Workshop, BMRC Research Report No. 111, pp. 111-114. Melbourne, Australia, 3-6 October, 2005. (pdf 284kB) Invited

Smith, A. B., Walker, J. P. and Western, A. W., 2004. Assimilation of Gravity Data into a Soil Moisture and Groundwater Column Model, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 22kB)

Ellett, K. M., Walker, J. P., Western, A. W., Grayson, R. B. and Rodell, M., 2004. Assimilation of GRACE-type Observations to Improve Catchment-scale Hydrological Model Prediction in the Murray-Darling Basin, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 6kB) (poster)

Rüdiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2004. Streamflow Data Assimilation: A study on Nested Catchments, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 124kB) (poster)

Pipunic, R., Walker, J. P., Western, A. W. and Savige, C., 2004. Assimilation of Latent and Sensible Heat Flux Data into a Land Surface Model, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 2.3MB) (poster)

Hemakumara, M., Kalma, J. D., Walker, J. P. and Willgoose, G. R., 2004. Downscaling of Low Resolution Passive Microwave Soil Moisture Observations, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 190kB) (poster)

Wealands, S. R., Grayson, R. B., Walker, J. P. and Bloschl, G., 2004. Quantitative Measures for the Local Similarity of Hydrological Spatial Patterns, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 744kB) (poster)

Jacobs, B., Kalma, J. D., Hancock G., Hemakumara, M., Walker, J. P. and Willgoose, G. R., 2004. Towards Understanding the Spatial and Temporal Distribution and Dynamics of Soil Organic Carbon Within a Large Temperate Agricultural Catchment, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 72kB) (poster)

Ni-Meister, W., Walker, J. P., Houser, P. R. and Reichle, R. H., 2004. Soil Moisture Initialization for Climate Prediction: Assimilating SMMR into a Land Surface Model, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 6kB)

Foster, J., Sun, C., Walker, J. P., Kelly, R., Dong, J. and Chang, A., 2004. Mapping Random and Systematic Errors of Satellite-derived Snow Water Equivalent Observations in Eurasia. Proceedings of the International Society for Optical Engineering (SPIE) XXth Congress (Volume 4468), Las Palmas, Spain, September, 2004. (pdf 217kB)

Foster, J., Sun, C., Walker, J. P., Kelly, R., Dong, J. and Chang, A., 2004. Identifying and Mapping Systematic Errors in Passive Microwave Snow Water Equivalent Observations. Proceedings of the International Society for Photogrammetry and Remote Sensing (ISPRS) XXth Congress (Volume XXXV, Part B), Istanbul, Turkey, July, 2004. (pdf 1.3MB)

Ni-Meister, W., Walker, J. P. and Houser, P. R., 2004. Soil Moisture Initialization for Climate Prediction: Characterization of Model and Observation Errors, Proceedings of the 18th Conference on Hydrology. The American Meteorological Society, Seattle, USA, 12-15 January, 2004. (pdf 376kB)

Zhan, X., Houser, P. R. and Walker, J. P., 2004. Retrieving Surface Soil Moisture from Simulated HYDROS L-band Radiometer and Radar Observations Using Kalman Filter Data Assimilation, Proceedings of the 18th Conference on Hydrology. The American Meteorological Society, Seattle, USA, 12-15 January, 2004. (Slides)

Reichle, R. H., Koster, R. D., Walker, J. P., Reinecker, M. M. and Houser, P. R., 2002. Aspects of the Extended and Ensemble Kalman Filters for Land Data Assimilation in the NASA Seasonal-to-Interannual Prediction Project, In: R. Atlas and E. Kalney (Ed.), Proceedings of the Symposium on Observations, Data Assimilation, and Probabilistic Prediction. The American Meteorological Society, Orlando, USA, 13 - 17 January, 2002, 111-112. (pdf 90kB)

Sun, C., Walker, J. P. and Houser, P. R., 2002. Snow Assimilation in a Catchment-based Land Surface Model Using the Extended Kalman Filter, In: R. Atlas and E. Kalney (Ed.), Proceedings of the Symposium on Observations, Data Assimilation, and Probabilistic Prediction. The American Meteorological Society, Orlando, USA, 13 - 17 January, 2002, 89-91. (pdf 58kB) (Poster)

Entin, J. K., Houser, P. R., Walker, J. P. and Burke, E., 2002. Improving Land Surface Modeling with Data Assimilation of TRMM Data, Symposium on Observations, Data Assimilation, and Probabilistic Prediction. The American Meteorological Society, Orlando, USA, 13 - 17 January, 2002.

Walker, J. P. and Houser, P. R., 2001. Temporal and Spatial Resolution Requirements for a Soil Moisture Mission. International Geoscience and Remote Sensing Symposium (IGARSS) [CD-ROM], Sydney, Australia, 9 - 13 July, 2001, 6-8. (pdf 487kB) (Slides) Invited

Walker, J. P. and Houser, P. R., 2001. A Synthetic Study on the Influence of Error in Surface Soil Moisture Observations on Assimilation, In: A. E. MacDonald, T. Schlatter, J. Cunning and R. Ware (Ed.), Proceedings of the 5th Symposium on Integrated Observing Systems. The American Meteorological Society, Albuquerque, USA, 14 - 18 January, 2001, 135-138. (pdf 308kB) (Slides)

Berg, A. A., Famiglietti, J. S., Walker, J. P. and Houser, P. R., 2001. Development of a Catchment-Based Hydrometeorological Forcing Data Set for Land Surface Modeling Applications, In: D. R. Easterling, R. Dishel, D. J. Gafffen, J. S. Gaffney, T. R. Karl, G. L. Johnson, R. Pulwarty, A. Roback, C. F. Ropelewski and A. Warnick (Ed.), Proceedings of the 12th Symposium on Global Change and Climate Variations, The American Meteorological Society, Albuquerque, USA, 14 - 18 January, 2001, 197-198. (pdf 38kB) (Poster)

Walker, J. P., Troch, P. A., Mansini, M., Willgoose, G. R. and Kalma, J. D., 1997. Profile Soil Moisture Estimation Using the Modified IEM. In: T. Stein (Ed.), Proceedings International Geoscience and Remote Sensing Symposium (IGARSS), Singapore, 3 - 8 August, 1997, 1263-1265. (pdf 68kB)

Conference Abstracts

Ye, N., Walker, J. P., Rüdiger, C., Wu, X., Jackson, T., Entekhabi, D., DeJeu, R., Merlin, O., Kim, E. and Renzullo, L., 2015. The fourth SMAP Experiment (SMAPEx-4): Preliminary Results. MODSIM2015, 21st International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December, 2015.

Wu, X., Walker, J. P. and Ye, N., 2015. Evaluation of a Soil Moisture Downscaling Algorithm Using the SMAPEx Data Set in Australia. MODSIM2015, 21st International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December, 2015.

Wright, A., Li, Y., Grimaldi, S., Pauwels, V. R. N. and Walker, J. P., 2015. A Holistic Approach to Rainfall Estimation for Operational Water Management. MODSIM2015, 21st International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December, 2015.

Grimaldi, S., Li, Y., Wright, A., Pauwels, V. R. N. and Walker, J. P., 2015. Use of Remote Sensing Data to Improve Hydraulic Model for Real Time Flood Wave Routing Prediction. MODSIM2015, 21st International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December, 2015.

Li, Y., Pauwels, V. R. N., Walker, J. P., Grimaldi, S. and Wright, A., 2015. Evaluation of Hydrological Models for Using Soil Moisture Observations. MODSIM2015, 21st International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December, 2015.

Tian, S., Tregoning, P., Renzullo, L. J., van Dijk, A. I. J. M. and Walker, J. P. , 2015. Integrating GRACE and SMOS Data into a Hydrological Model Using an Ensemble Kalman Filter. MODSIM2015, 21st International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December, 2015.

Fieber, K. D., Davenport, I. J., Tanase, M. A., Ferryman, J. M., Gurney, R. J., Walker, J. P., Hacker, J. M., 2014. Sensitivity of LAIe and CHP Retrieved from Airborne Full-waveform LiDAR Data to Incidence Angle in Discontinuous Forest Canopy. ForestSAT, Italy, 4-7 November, 2014.

Lievens, H., Van Den Berg, J., Martens, B., Verhoest, N., Al-Bitar, A., Merlin, O., Tomer, S., Cabot, F., Kerr, Y., Pan, M., Wood, E., Drusch, M., Hendricks Franssen, H., Vereecken, H., De Lannoy, G., Dumedah, G., Walker, J. P., 2014. A Multiscale Data Assimilation Algorithm for SMOS. Computational Methods in Water Resources, XX, INTERNATIONAL CONFERENCE, Stuttgart, Germany, 10-13 June, 2014.

Vittucci, C., Guerriero, L., Ferrazzoli, P., Rahmoune, R., Tanase, M., Pancera, R., Monerris, A., Rudiger, C., Gao, Y., and Walker, J., 2014. Passive and Active Forest Simulations and Comparisons with SMAPEx-3 Data, MicroRad 2014, Pasadena, USA, 24-27 March 2014.

Ouellette, J. D., Johnson, J. T., Balenzano, A., Mattia, F., Satalino, G., Kim, S., Walker, J. P., Panciera, R., 2014. A Study of Soil Moisture Estimation from Multi-Temporal L-band Radar Observations of Vegetated Surfaces, URSI'14, Boulder, Jan 2014.

Azmi, M., Rüdiger, C. and Walker, J. P., 2013. Weekly Comparative Evaluations of Some High Resolution Water Stress Variables at The Riggs Creek OzFlux Tower Site. MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, Adelaide, 1-6 December, 2013.

Lievens, H., Al-Bitar, A., Cabot, F., De Lannoy, G., Drusch, M., Dumedah, G., Hendricks Franssen, H., Kerr, Y., Merlin, O., Pan, M., Roundy, J., Sahoo, A., Tomer, S., van den Berg, M. J., Vereecken, H., Verhoest, N., Walker, J. P., Wood, E. and Pauwels, V. R. N., 2013. Assimilation of SMOS Data for Improving Surface Water Management. MODSIM2013, 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, Adelaide, 1-6 December, 2013.

Woodland, R. J., Thomson, J. R., MacNally, R., Walker, J. P., Evrard, V., Lubcke, T., Rüdiger, C., Hawkins, C., Cook, P. L. M. 2013. From The Catchment to The Estuary - Linking Nutrient Loading to Estuarine Food Web Structure. 22nd Biennial Conference of the Coastal and Estuarine Research Federation, San Diego, California, USA, 3-7 November, 2013.

Walker, J. P., 2013. State-of-the-art in Soil Moisture Remote Sensing. 4th Asia Oceania Meteorological Satellite Users Conference, Melbourne, Australia, 9-11 October, 2013. Invited

Walker, J. P., Panciera, R., Moneris, A., 2013. Basis of An Australian Radar Soil Moisture Algorithm Theoretical Baseline Document (ATBD). Roadmap to an Australian Civilian Satellite SAR Capability Workshop, 8 October 2013, Sydney, Australia. Invited

Moghaddam, N., Rüdiger, C., Samsonov, S., Walker, J. P. and Hall, M., 2013. Assessment of INSAR Potential in Simulating Subsurface Geological Structure. SPIE Remote Sensing, Dresden, Germany, 23-26 September, 2013.

Vittucci, C., Guerriero, L., Ferrazzoli, P., Rahmoune, R., Tanase, M., Panciera, R., Monerris, A., Rüdiger, C., Walker, J. P., 2013. Soil Moisture Monitoring Over Australian Forests Using Airborne Data. Satellite Soil Moisture Validation & Application Workshop. ESA/ESRIN, Frascati, Italy, 1-3 July, 2013.

Rüdiger, C., Walker, J. P., Kaihotsu, I., Fujii, H., Yee, M., Monerris, A., 2013. A First Glance at AMSR2 Soil Moisture Observations across Australia. Satellite Soil Moisture Validation & Application Workshop. ESA/ESRIN, Frascati, Italy, 1-3 July, 2013.

Monerris, A., Rüdiger, C., Zreda, M., Walker, J. P., and Panciera, R., 2012. Mapping Soil Moisture with Cosmic Ray Probes over Grassland. 3rd SMAP Cal/Val Workshop, Oxnard, CA, 14-16 November, 2012. (poster)

Walker, J. P., Wu, X., Gao, Y., Monerris, A., Panciera, R., Jackson, T.,O'Neill, P., Das, N., Gray, D. and Ryu, D., 2012. The Soil Moisture Active Passive Experiments: SMAPEx. 3rd SMAP Cal/Val Workshop, Oxnard, CA, 14-16 November, 2012.

Wu, X., Walker, J. P., Panciera, R., Rüdiger, C., and Das, N., 2012. Towards Medium-resolution Brightness Temperature Retrieval from Active and Passive Microwave Observations. 3rd SMAP Cal/Val Workshop, Oxnard, CA, 14-16 November, 2012. (poster)

Walker, J. P., Wu, X., Gao, Y., Monerris, A., Panciera, R., Jackson, T., Gray, D. and Ryu, D., 2012. Towards SMAP: An Airborne Simulation of The Data Stream. 39th COSPAR Scientific Assembly, Mysore, India, 14-22 July, 2012.

Davenport, I., Fieber, K., Gurney, R., Ferryman, J., Hacker, J. and Walker, J., 2012. Extracting Vertical Foliage Profiles of Individual Eucalypt Trees Using Last Significant Return Airborne Laser Altimetry and On-site Photography. Geophysical Research Abstracts, 14, EGU2012-5316, EGU General Assembly 2012, Vienna, Austria, 22-27 April, 2012.

Fieber, K., Davenport, I., Ferryman, J., Gurney, R., Walker, J. and Hacker, J., 2012. Analysis of Full-waveform LiDAR Pulse Properties for Vegetation Discrimination and Characterisation. Geophysical Research Abstracts, 14, EGU2012-5363-1, EGU General Assembly 2012, Vienna, Austria, 22-27 April, 2012.

Walker, J. P., Monerris, A., Gao, Y., Wu, X., Panciera, R., Tanase, M., Ryu, D., Gray, D., Yardley, H., Goh, A. and Jackson, T. J., 2012. The Soil Moisture Active Passive Experiments: Towards Active Passive Retrieval and Downscaling. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012.

Pipunic, R., Ryu, D. and Walker, J. P., 2012. The Impact of Assimilating Satellite Surface Soil Moisture Data on Modelled Root Zone Soil Moisture and ET Over a Six Year Period: Assessment Across an In-situ Soil Moisture Monitoring Network in the Murray-Darling Basin, Australia. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012.

Pauwels, V. R. N., Lievens, H., Verhoest, N. E. C., De Lannoy, G., Plaza Guingla, D. A., van den Berg, M. J., Kerr, Y., Al Bitar, A., Merlin, O., Cabot, F., Gascoigne, S., Wood, E., Pan, M., Sahoo, A., Walker, J. P., Dumedah, G. and Drusch, M., 2012. Assimilation of SMOS Data into a Coupled Land Surface and Radiative Transfer Model for Improving Surface Water Management. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012.

Rüdiger, C., Monerris-Belda, A., Mialon, A., Merlin, O., Walker, J. P., Kerr, Y. H. and Kim, E. J., 2012. SMOS Soil Moisture Validation in Australia. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012.

Monerris, A., Rüdiger, C., Zreda, M., Walker, J. P. and Panciera, R., 2012. Mapping Soil Moisture Variability: Inter-comparison Between L-band Radiometry and Cosmic Ray Neutron Emissions. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012.

Walker, J. P., Beringer, J., Rüdiger, C. and Daly, E., 2012. Towards global water and energy balance monitoring using GCOM-W1 in the Australian Murray Darling Basin. Joint PI Workshop of Global Environment Observation Mission 2011, Tokyo, Japan, 17-20 January, 2012.

Ye, N., Walker, J. P., Rüdiger, C., Ryu, D. and Gurney, R. J., 2011. Impact of Urban Cover Fraction on SMOS and SMAP Surface Soil Moisture Retrieval. AGU Fall Meeting 2011, San Francisco, California, USA, 5-9 December, 2011.

Walker, J. P., Rüdiger, C., Kerr, Y., Mialon, A. and Merlin, O., 2011. Validation of SMOS Soil Moisture in the Murray Darling Basin. WCRP OSC Climate Research in Service to Society, Denver, CO, USA, 24-28 October, 2011.

Walker, J. P., Rüdiger, C., Kerr, Y., Mialon, A. and Merlin, O., 2011. SMOS Soil Moisture Validation for Australia. SMOS Science Workshop 2011, Arles, France, 27-29 September, 2011.

Peischl, S., Walker, J. P., Rüdiger, C., Ryu, D. and Kerr, Y., 2011. Validation of the SMOS Multi-incidence Angle Soil Moisture Retrieval over Australia. SMOS Science Workshop 2011, Arles, France, 27-29 September, 2011.

Wang, S., Li, W., Che, T., Han, X., Walker, J. P., Rüdiger, C., Peischl, S. and Ye, N., 2011. Mapping Surface Soil Moisture Using L-band Radiometer Observations in the Second Australian Airborne Cal/Val Experiment for SMOS (AACES-2). Progress in Electromagnetics Research Symposium PIERS 2011, Suzhou, China, 12-16 September, 2011.

Gray, D., Yardley, H., Walker, J. P., Panciera, R., Hacker, J., McGrath, A. and Bates, B., 2011. Initial Experimental Results from PLIS: Polarimetric L-Band Imaging SAR. PIRR 2011 Workshop on Progress in Radar Research, Adelaide, Australia, 5-6 May, 2011.

Walker, J. P., Panciera, R., Ryu, D., Gray, D. and Jackson, T., 2011. The Australian SMAPEx and Core Validation Site. 2nd SMAP Cal/Val Workshop, Oxnard, CA, 3-5 May, 2011.

Rüdiger, C., Doubkova, M., Walker, J. P. and Wagner, W., 2011. Similarities of ASAR GW and Passive Airborne L-band Observations. EUMETSAT/ESA Scatterometer Science Conference, Darmstadt, Germany, 11-13 April, 2011.

Rüdiger, C., Walker, J. P., Kerr, Y. H., Merlin, O., Mialon, A. and Kim, E. J., 2011. SMOS L1c and L2 Product Validation with Airborne and In-situ Observations over South-eastern Australia. Geophysical Research Abstracts, 13, EGU2011-5183, EGU General Assembly 2011, Vienna, Austria, 03-08 April, 2011.

Satalino, G., Mattia, F., Balenzano, A., Panciera, R. and Walker, J. P., 2011. Use of Multi-temporal Series of COSMO-SkyMed and PALSAR SAR data for Landcover Classification and Soil Moisture Retrieval over Agricultural Sites. Geophysical Research Abstracts, 13, EGU2011-7816, EGU General Assembly 2011, Vienna, Austria, 03-08 April, 2011.

Peischl, S., Walker, J. P., Ryu, D. and Kerr, Y., 2011. Towards Soil Moisture Retrieval Using Multi-incidence Angle Observations. Geophysical Research Abstracts, 13, EGU2011-919, EGU General Assembly 2011, Vienna, Austria, 03-08 April, 2011.

Merlin, O., Rüdiger, C., Richaume, P., Jacquette, E., Mialon, A., Al Bitar, A., Walker, J. P. and Kerr, Y., 2011. Can Evaporation-based Disaggregation Techniques of Surface Soil Moisture Observations Help Improve the Validation Strategies of SMOS Data? Geophysical Research Abstracts, 13, EGU2011-1722, EGU General Assembly 2011, Vienna, Austria, 03-08 April, 2011.

Walker, J. P., and many others, 2011. Overview: 8-years of Soil Moisture Cal/Val in Australia. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Rüdiger, C., Walker, J. P., Allahmoradi, M., Bandara, R., Barrett, D., Gurney, R., Kerr, Y., Kim, E., Le Marshall, J., Peischl, S. and Ye, N., 2011. The Australian Airborne Cal/Val Experiment for SMOS (AACES) Field Campaigns. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Panciera, R., Walker, J. P., Ryu, D., Gray, D. and Jackson, T., 2011. SMAPEx-1 & SMAPEx-2: An Overview. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Peischl, S., Walker, J. P., Ryu, D., Kerr, Y. and Rüdiger, C., 2011. Estimation of Soil Moisture Retrieval Parameters Using Multi-angular L-band Observations. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Ye, N., Walker, J. P., Ryu, D. and Gurney, R., 2011. Rock Cover Fraction and Its Influence on Soil Moisture Retrieval. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Bandara, R., Walker, J. P., Gurney, R. and Rüdiger, C., 2011. Development of a "Soil Hydraulic Property Estimator". The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Rüdiger, C., Walker, J. P., Kerr, Y., Allahmoradi, M., Bandara, R., Barrett, D., Gurney, R., Kim, E., Le Marshall, J., Peischl, S. and Ye, N., 2011. SAZE-Oz and AACES: First Results. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Allahmoradi, M., Western, A., Walker, J. P., Ryu, D. and Kim, E., 2011. Multi-sensor Soil Moisture Retrieval Using SMOS. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Tanase, M., Panciera, R., Lowell, K. and Walker, J. P., 2011. Towards Operational Monitoring of Key Climate Parameters from Synthetic Aperture Radar: Perspective and Challenges. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

Ye, N., Walker, J. P., Ryu, D., Gurney, R. and Rüdiger, C., 2011. The Effect of Rock on Soil Moisture Retrieval from L-band Passive Microwave Observation. 2011 International Workshop on Soil Moisture and Ocean Salinity (ISMOS 2011), Sanya, China, 15-19 January, 2011.

Panciera, R., Walker, J. P., Ryu, D., Gray, D., Jackson, T. J. and Yardley, H., 2010. The Soil Moisture Active Passive Experiments (SMAPEx) for SMAP Algorithm Development. Fall Meeting, AGU, San Francisco, Calif., 13-17 December, 2010. Invited

Rüdiger, C., Walker, J. P., Kerr, Y. H. and Kim, E. J., 2010. SMOS Ground Validation in Australia: Results from Summer and Winter Campaigns. Fall Meeting, AGU, San Francisco, Calif., 13-17 December, 2010.

Kim, E., Walker, J. P., Rüdiger, C., Costelloe, J., Ye, N., Peischl, S., Allahmoradi, M. and Marks, A., 2010. SMOS/MIRAS Calibration Using Earth Scene Targets. SMOS Validation and Retrieval Teams (VRT) Meeting, Frascati, Italy, November, 2010.

Walker, J. P., Rüdiger, C., Allahmoradi, M., Bandara, R., Barrett, D., Gurney, R., Kerr, Y., Kim, E., Le Marshall, J., Peischl, S. and Ye, N., 2010. The Australian Airborne CAL/VAL Experiment for SMOS. SMOS Validation and Retrieval Teams (VRT) Meeting, Frascati, Italy, November, 2010.

Satalino, G., Balenzano, A., Panciera, R., Walker, J. P. and Mattia, F., 2010. Soil Moisture Retrieval from Temporal Series of PALSAR ScanSAR Data. The 4th Joint PI Symposium of ALOS Data Nodes for ALOS Science Program, Tokyo, 15-17 November, 2010.

Kim, E., Walker, J. P., Rüdiger, C., and Panciera, R., 2010. Australian Soil Moisture Field Experiments in Support of Soil Moisture Satellite Observations. Remote Sensing and Hydrology 2010 Symposium, Jackson Hole, Wyoming, USA, Sept 2010.

French, A., Rüdiger, C., and Walker, J. P., 2010. Thermal Infrared Observations for the SMOS Arid Zone Experiments in Australia. Remote Sensing and Hydrology 2010 Symposium, Jackson Hole, Wyoming, USA, Sept 2010.

Rüdiger, C., Walker, J. P., Pipunic, R. and de Lannoy, G., 2010. A Soil Moisture Monitoring and Prediction System for Australia. The Fourth International Workshop on Catchment-scale Hydrological Modeling and Data Assimilation (4th CAHMDA), Lhasa, China, 21-23 July, 2010.

Pipunic, R., Walker, J. P. and de Lannoy, G., 2010. Investigating Model Error Using Data Assimilation. The Fourth International Workshop on Catchment-scale Hydrological Modeling and Data Assimilation (4th CAHMDA), Lhasa, China, 21-23 July, 2010.

Walker, J. P., 2010. Hydrologic Model Data Assimilation: Next Steps. The Fourth International Workshop on Catchment-scale Hydrological Modeling and Data Assimilation (4th CAHMDA), Lhasa, China, 21-23 July, 2010. Keynote talk

Rüdiger, C., Walker, J. P., Pipunic, R., Mahfouf, J. F., Calvet, J. C. and Albergel, C., 2010. Towards Multi-parameter Assimilation in Land Surface Models. GEWEX/CEOP, Lhasa, China, 19-21 July, 2010.

Walker, J. P., Rüdiger, C., Allahmoradi, M., Barrett, D., Gurney, R., Kerr, Y., Kim, E., Le Marshall, J., Peischl, S. and Ye, N., 2010. The Australian Airborne CAL/VAL Experiment for SMOS - First Results. Proceedings of the ESA Living Planet Symposium, Bergen, Norway, 28 June-2 July, 2010.

Kim, E., Walker, J. P., Rüdiger, C., Costelloe, J., Ye, N., Peischl, S., Allahmoradi, M. and Marks, A., 2010. SMOS/MIRAS Calibration Using Earth Surface Targets. Proceedings of the ESA Living Planet Symposium, Bergen, Norway, 28 June-2 July, 2010.

Rahmoune, R., Ferrazzoli, P., Walker, J. P., and Grant, J. P., 2010. L-Band Emission From a Eucalyptus Forest in Various Soil Conditions During the NAFE Campaign. 11th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, MicroRad'10, Washington DC, USA, Mar 2010.

Calvet, J. -C., Albergel, C, Crapeau, M., Draper, C., Kerr, Y., Mahfouf, J. -F. Mialon, A., Rüdiger, C., Walker, J. P., Wigneron, J. -P., Zribi, M., 2009. Assimilation of Earth Observation Data in the ISBA Land Surface Model of Météo-France. Earth Observation and Water Cycle Conference, ESRIN, Italy, 18-20 November 2009.

Pipunic, R., Walker, J. P. and Western, A., 2009. A Comparison of Land Surface Model Data Assimilation Approaches to Improve Heat Flux Estimates for Numerial Weather Prediction. 5th WMO Symposium on Data Assimilation, pp.66-67. Melbourne, Australia, 5-9 October 2009.

Panciera, R., Walker, J. P., Ryu, D., Gray, D., and Jackson, T., 2009. SMAPEx: Soil Moisture Active Passive Remote Sensing Experiment for SMAP Algorithm Development. 6th International Scientific Conference on the Global Energy and Water Cycle (GEWEX), Melbourne, Australia, 24-28 August, 2009.

Rüdiger, C., Smith, A., Draper, C., Walker, J. P., Western, A., 2009. Hydrological Assessment of the Australian Land Surface Model CABLE in the Murray Darling Basin via Remotely Sensed Soil Moisture. 6th International Scientific Conference on the Global Energy and Water Cycle (GEWEX), Melbourne, Australia, 24-28 August, 2009.

Rüdiger, C., Walker, J. P., Barrett, D., Gurney, R., Kerr, Y., Kim, E., LeMarshall, J., 2009. MoistureMap: Towards a soil moisture monitoring, prediction and reporting system for sustainable land and water management. 6th International Scientific Conference on the Global Energy and Water Cycle (GEWEX), Melbourne, Australia, 24-28 August, 2009.

Pipunic, R., Walker, J. P., Western, A., 2009. Data Assimilation for Better Heat Flux Predictions from Land Surface Models. 6th International Scientific Conference on the Global Energy and Water Cycle (GEWEX), Melbourne, Australia, 24-28 August, 2009.

Davenport, I., Walker, J. P., Gurney, R., 2009. Measuring Vegetation Structure with Airborne Laser Altimetry. 6th International Scientific Conference on the Global Energy and Water Cycle (GEWEX), Melbourne, Australia, 24-28 August, 2009.

Panciera, R., Walker, J. P., Kim, E. J., Kalma, J. D., 2009. A Proposed Improvement to the SMOS Soil Moisture Retrieval Algorithm in the Presence of Strong Land-Surface Heterogeneity. 2nd Integrated Land Ecosystem-Atmosphere Processes Study Science Conference (iLEAPS), Melbourne, Australia, 24-28 August, 2009.

Walker, J. P., Rüdiger, C., Calvet, J. -C., and Kerr, Y., 2009. An Insitu-model-aircraft cross Validation Strategy for SMOS. 2nd Workshop on Remote Sensing and Modeling of Surface Properties, Toulouse, France, 9-11 June, 2009.

Calvet, J. -C., Albergel, C., Rüdiger, C., Walker, J., Wigneron, J. -P., Chanzy, A., Kerr, Y., 2009. Validation of Satellite Soil Moisture Products in Southwestern France Using Model Simulations and In-situ Data. 2nd Workshop on Remote Sensing and Modeling of Surface Properties, Toulouse, France, 9-11 June, 2009.

Walker, J. P., Rüdiger, C. and the MoistureMap Team, 2009. A Potential Ground Calibration Target for SMOS, Geophysical Research Abstracts [CD-ROM], 11, EGU2009-6416, EGU General Assembly, Vienna, Austria, April 2009.

Walker, J. P., Allahmoradi, M., Peischl, S., Ye, N. and the MoistureMap Team, 2009. Towards an Australian Validation of SMOS, Geophysical Research Abstracts [CD-ROM], 11, EGU2009-6426, EGU General Assembly, Vienna, Austria, April 2009.

Draper, C., Mahfouf, J. -F., and Walker, J. P., 2009. EKF Assimilation of Near-surface Soil Moisture into ISBA: A Comparison of Error Covariance Evolution Approaches, Geophysical Research Abstracts [CD-ROM], 11, EGU2009-3897, EGU General Assembly, Vienna, Austria, April 2009.

Walker, J. P., Rüdiger, C., Kerr, Y, Kim, E., and the MoistureMap Team, 2009. Towards a SMOS Calibration Site in the Australian Arid Zone, SMOS Validation & Retrieval Team Readiness Review Workshop, Lisbon, March 2009.

Walker, J. P., Allahmoradi, M., Peischl, S., Ye, N. and the MoistureMap Team, 2009. Towards an Australian Validation of SMOS, SMOS Validation & Retrieval Team Readiness Review Workshop, Lisbon, March 2009.

Walker, J. P., Rüdiger, C., Panciera, R., Kerr, Y., Jackson, T., Ryu, D., and the MoistureMap Team, 2009. Towards SMOS and SMAP: An Australian Perspective, Third International Soil Moisture Working Group Meeting, Lisbon, March 2009. Invited

de Jeu, R. A. M., Holmes, T. R. H., Panciera, R., Walker, J. P. and Dolman, H. 2008. The Performance of the Land Parameter Retrieval Model (LPRM) at Different Scales and Frequencies, EOS, Transactions American Geophysical Union, 89(53), Fall Meeting Supplement, Abstract H41D-0900. Dec 2008.

Mladenova, I., Lakshmi, V., Jackson, T., Walker, J. P., Merlin, O. and de Jeu, R. A. M., 2008. The Impact of Standing Water and Irrigation on AMSR-E Sensitivity to Soil Moisture over the NAFE'06 Experiment Area, EOS, Transactions American Geophysical Union, 89(53), Fall Meeting Supplement, Abstract H41D-0908. Dec 2008.

Mladenova, I., Lakshmi, V., Walker, J. P., Panciera, R., Wagner, W. and Doubkova, M. 2008. Can the ASAR Global Monitoring Mode Adequately Capture Spatial Soil Moisture Variability? EOS, Transactions American Geophysical Union, 89(53), Fall Meeting Supplement, Abstract H54A-04. Dec 2008.

Holmes, T. R. H., de Jeu, R. A. M., Parinussa, R. and Walker, J. P., 2008. Evaluation of Satellite Derived Land Surface Temperatures over the NAFE Research Sites, Geophysical Research Abstracts [CD-ROM], 10, EGU2008-A-03479, EGU General Assembly, Vienna, Austria, April 2008.

Saleh, K., kerr, Y. H., Boulet, G., Escorihuela, M. J., Maisongrande, P., Richaume, P., de Rosnay, P., Wigneron, J. P., López-Baeza, E., Grant, J. P., Delwart, S., Berger, M., Panciera, R. and Walker, J. P., 2008. Main Outcomes of the CoSMOS/NAFE Campaign for the Validation of SMOS Soil Moisture Retrieval Algorithm, 10th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment [CD-ROM], MicroRad'08, Florence, Italy, Mar 2008.

Lakshmi, V., Mladenova, I., Jackson, T., Long, D., and Walker, J. P., 2007. Assessment of Potential AMSR-E Soil Moisture Disaggregation Using Scatterometer Observations, EOS, Transactions American Geophysical Union, 88(52), Fall Meeting Supplement, Abstract H31D-0633.

Merlin, O., Walker, J. P. and Kerr, Y., 2007. Remote Sensing of Soil Moisture, Workshop on Hydrological Consequences of Climate Change, Canbera, Australia, November 2007. Invited Keynote

Walker, J. P., 2007. Soil Moisture Monitoring Activities Downunder, Second International Soil Moisture Monitoring Workshop, Institute of Atmospheric Physics of the Chinese Academy of Sciences, Beijing, China, November 2007. Invited

Escorihuela, M. -J., Kerr, Y. and Walker, J. P., 2007. Assessment of Sun-glint Effects Over Land, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Saleh, K., Kerr, Y., Boulet, G., Escoriheuela, M. -J., Massiongrande, P., Richaume, P., de Rosnay, P., Wigneron, J. -P., Cano, A., López-Baeza, E., Grant, J., Skou, N., Panciera, R., Walker, J. P., Berger, M. and Delwart, S., 2007. The ESA CoSMOS Study for the Validation of the SMOS Soil Moisture L2 Prototype, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Panciera, R., Walker, J. P., Merlin, O., Kalma, J. D., Kim, E. J. and Hacker, J., 2007. The National Airborne Field Experiment 2006 (NAFE'06) Dataset, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Panciera, R., Walker, J. P., Kim, E. J., Kalma, J. D., Hacker, J., Merlin, O., Saleh, K., Wigneron, J. -P. and Grant, J., 2007. SMOS L2 L-band Soil Moisture Retrieval During NAFE'05, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A. W., 2007. A One-Dimensional Data Assimilation Experiment Using 3D Eddy Covariance Heat Flux Observations to Improve Land Surface Modelling, EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H32A-06.

Draper, C., Walker, J. P. and Steinle, P., 2007. How Well Does AMSR-E Data Represent Soil Moisture Over Australia? EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H51C-03.

Panciera, R., Walker, J. P., Merlin, O., Kalma, J., Kim, E. and Hacker, J., 2007. The National Airborne Field Experiment 2006 (NAFE'06) Dataset, EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H51C-01.

Gruhier, C., de Rosnay, P., Richaume, P., Kerr, Y., Rüdiger, C., Boulet, G., Walker, J. P., Mougin, E., Ceschia, E. and Calvet, J, -C., 2007. Large Scale Evaluation of AMSR-E Soil Moisture Products Based on Ground Soil Moisture Network Measurements, EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H51C-02.

Teuling, A. J., Hurkmans, R., Merlin, O., Panciera, R. and Walker, J. P., 2007. Surface Soil Moisture Variability During NAFE'06, Geophysical Research Abstracts [CD-ROM], 9, EGU2007-A-03759, EGU General Assembly, Vienna, Austria, April 2007.

Gruhier, C., de Rosnay, P., Richaume, P., Kerr, Y., Rüdiger, C., Walker, J. P., Mougin, E., Ceschia, E., and Calvet, J. -C., 2007. Large Scale Evaluation of AMSR Soil Moisture Products Based on Ground Soil Moisture Network Measurements, Geophysical Research Abstracts [CD-ROM], 9, EGU2007-A-07725, EGU General Assembly, Vienna, Austria, April 2007.

Merlin, O., Walker, J. P., Panciera, R., Kalma, J., Kim, E. and Hacker, J., 2007. The National Airborne Field Experiments: Towards 1 km Resolution Soil Moisture, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Kim, E., Tedesco, M., Walker, J. P., and Panciera, R., 2007. Observed Spatial Variability of Snow and Soil Moisture Signatures from the CLPX1 and NAFE'05 Campaigns, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A., 2007. Heat Flux Data Assimilation for Improved Land Surface Modelling: A One Dimensional Field Data Case Study, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Thyer, M. and Walker, J. P., 2007. A Bayesian Approach to Characterizing Uncertainty in Remotely Sensed Soil Moisture Measurements Using the NAFE Dataset, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Panciera, R., Walker, J. P., Kalma, J. D. and Kim, E. J., 2007. Scaling properties of passive microwave soil moisture signatures during NAFE05, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Draper, C., Steinle, P. and Walker, J. P., 2007. Soil moisture data in NWP, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A., 2007. Heat Flux Data Assimilation for Improved Land Surface Modelling - A One-dimensional Field Data Case Study. 14th Australian Meteorological and Oceanographic Society National Conference. Adelaide, Australia. February 5-8, 2007.

Draper, C., Steinle, P. and Walker, J. P., 2007. Soil Moisture Data in NWP. 14th Australian Meteorological and Oceanographic Society National Conference. Adelaide, Australia. February 5-8, 2007.

Ellett, K. M., Western, A. W., Walker, J. P., Sirawardena, L., Young, R. I., Smith, A. B., Flint, A. L. and Summerell, G., 2006. The Murrumbidgee Monitoring Network: Supporting CEOP, GEWEX and Hydrological Research in the Murray-Darling Basin, Australia, EOS, Transactions American Geophysical Union, 87(52), Fall Meeting Supplement, Abstract H34A-05.

Walker, J. P., 2006. Hydrologic Remote Sensing. 13th Australasian Remote Sensing and Photogrammetry Conference. Canberra, Australia. November 20-24, 2006. Invited Keynote

Merlin, O., Walker, J. P., Panciera, R., Kalma, J. D., Kim, E. and Hacker, J. M., 2006. The National Airborne Field Experiments: Towards 1 km Resolution Soil Moisture, Workshop on Recent Advances in Quantitative Remote Sensing, Valencia Spain, September 2006.

Berg, A. A. and Walker, J. P., 2006. Sensitivity of a Land Surface Model and Soil Moisture Assimilation Sytem to Bias in the Hydrometeorological Forcing. 32nd Annual Meeting of the Canadian Geophysical Union. Banff, Alberta, Canada. May 14-17, 2006.

Walker, J. P., Merlin, O., Pancierra, R. and Kalma, J. D., 2006. The 2006 National Airborne Field Experiment Plan, EOS, Transactions American Geophysical Union, 87(36), Joint Assembly Supplement, Abstract H33A-01. Invited

Ellett, K., Walker, J. P., Western, A. W. and Rodell, M., 2006. Investigating the Potential for Direct Assimilation of Terrestrial Water Storage Observations from the GRACE Satellite Mission, EOS, Transactions American Geophysical Union, 87(36), Joint Assembly Supplement, Abstract H21B-02.

Rodell, M., Reichle, R., Ellett, K., Walker, J. P., Lemoine, F. and Kato, H., 2006. Land Surface Model Assimilation of Data from GRACE and Other Satellites , EOS, Transactions American Geophysical Union, 87(36), Joint Assembly Supplement, Abstract H21B-01. Invited

Walker, J. P., Panciera, R., Merlin, O. and Kalma, J. D., 2006. Towards 1km Root Zone Soil Moisture from SMOS: The National Airborne Field Experiments, 6th SMOS Workshop, Copenhagen, Denmark, May 2006.

Grant, J. P., Van de Griend, A. A., Wigneron, J, -P., Walker, J. P., Kalma, J. D., Saleh, K. and Panciera, R., 2006. Influence of Surface Heterogeneity on L-band (1.4 GHz) Measurements at Various Spatial Resolutions: Some Preliminary Results of the NAFE/CoSMOS 2005 Field Campaign, 6th SMOS Workshop, Copenhagen, Denmark, May 2006. (Poster)

Macelloni, G., Palosvia, S., Pampaloni, P., Floury, N., Drinkwater, M., Kim, E. and Walker, J. P., 2006. Assessment of Instrument Stability and Calibration by Using Extended Targets: Antarctic Plateau (Dome-C) and Forests, 6th SMOS Workshop, Copenhagen, Denmark, May 2006.

Kim, E., Walker, J. P., Tedesco, M. and Dindschadler, B., 2006. Evaluation of Antarctic and Tropical Forest Sites for Calibration and Cross-Calibration of Spaceborne L-band Radiometers, 6th SMOS Workshop, Copenhagen, Denmark, May 2006.

Walker, J. P., Panciera, R., Merlin, O., Kalma, J. D., Kim, E. J. and Hacker, J. M., 2006. The National Airborne Field Experiments, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-03766, EGU General Assembly, Vienna, Austria, April 2006.

Panciera, R., Walker, J. P., Kalma, J. D. and Kim, E. J., 2006. The National Airborne Field Experiment: Scaling Properties of Passive Microwave Soil Moisture Signatures, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-01275, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A. W., 2006. Assimilation for Latent and Sensible Heat Flux Prediction-A Synthetic Study, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-05388, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Thyer, M. and Walker, J. P., 2006. A Bayesian Approach to Characterizing Uncertainty in Remote Sensed Soil Moisture Measurements using the NAFE dataset, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-09976, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Berger, M., Kerr, Y. and Walker, J. P., 2006. coSMOS: Field Validation of the SMOS Soil Moisture Retrieval Algorithm, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-10763, EGU General Assembly, Vienna, Austria, April 2006.

Rüdiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2006. Streamflow Assimilation: On the Effect of Model Biases, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-05322, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Walker, J. P. and Western, A. W., 2006. Soil Moisture Monitoring: Whither Shall We Measure? Soil Moisture Monitoring Workshop, ESA-ESTEC, Nordwijk, The Netherlands, March 2006.

Kim, E. J., Tedesco, M., Walker, J. P. and Panciera, R., 2006. Observed Scaling Behavior of Snow and Soil Moisture Signatures from the CLPX and NAFE Campaigns, 9th Specialist Meeting on Microwave Radiometry and Remote Sensing Applications [CD-ROM], MicroRad'06, San Juan, Puerto Rico, Feb 2006.

Berger, M., Kerr, Y. and Walker, J. P., 2005. coSMOS: Field Validation of the SMOS Soil Moisture Retrieval Algorithm, The 9th International Symposium on Physical Measurements and Signatures in Remote Sensing, 17-19 Oct 2005, Beijing, China.

Walker, J. P., 2005. Land Surface Model Data Assimilation for Atmospheric Prediction, Proceedings 2nd Asia Oceania Geosciences Society [CD-ROM], OA19/1A-02-1/206. Invited

Smith, A. B., Walker, J. P. and Western, A. W., 2005. Assimilation of Gravity Data Into a Soil Moisture and Groundwater Column Model, Proceedings 2nd Asia Oceania Geosciences Society [CD-ROM], OA19/1A-02-2/206.

Turner, M. R. J., Walker, J. P., Oke, P. P. and Grayson, R. B., 2005. Assimilation of AVHRR Water Temperature Observations into a Coastal Hydrodynamic Model, Proceedings 2nd Asia Oceania Geosciences Society [CD-ROM], OA19/1A-02-5/206.

Walker, J. P., and Houser, P. R., 2005. Challenges and Solutions to High Resolution Soil Moisture Mapping, EOS, Transactions American Geophysical Union, 86(18), Joint Assemply Supplement, Abstract G23A-06. Invited

Rüdiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2005. Assimilation of Streamflow and Surface Soil Moisture Observations into a Land Surface Model, Geophysical Research Abstracts [CD-ROM], 7, EGU05-A-02972, EGU General Assembly, Vienna, Austria, April 2005.

Turner, M., Walker, J. P., Oke, P. and Grayson, R. B., 2005. Sequential Data Assimilation of Satellite Data into a Coastal Hydrodynamic Model, Geophysical Research Abstracts [CD-ROM], 7, EGU05-A-02476, EGU General Assembly, Vienna, Austria, April 2005.

Willgoose, G. R., Hemakumara, M., Kalma, J. D., Walker, J. P. and Rüdiger, C., 2005. The Spatial and Temporal Distribution of Point Scale Soil Water in a Semi-arid Catchment and Some Implications for Catchment Scale Predictability, Geophysical Research Abstracts [CD-ROM], 7, EGU05-A-04970, EGU General Assembly, Vienna, Austria, April 2005. Invited

Walker, J. P., 2005. Towards Remote Sensing for Hydrologic Prediction in Ungauged Basins, VIIth IAHS Scientific Assembly, Symposia 7.3 - New Data Collection Approaches and Model Development, Foz do Iguacu, Brazil. Invited

Walker, J. P., and Kandel, D. D., 2004. Brightness Temperature versus Surface Soil Moisture Assimilation, EOS, Transactions American Geophysical Union, 85(47), Fall Meeting Supplement, Abstract H12A-01.

Zhan, X, Houser, P. R., and Walker, J. P., 2004. Jointly Retrieving Surface Soil Moisture from Active and Passive Microwave Observations Using Cubist Data Mining, EOS, Transactions American Geophysical Union, 85(47), Fall Meeting Supplement, Abstract SF11A-04. Invited

Rüdiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2004. A Catchment Based Study on Streamflow Data Assimilation, EOS, Transactions American Geophysical Union, Western Pacific Meeting Supplement, Abstract H23A-63.

Smith, A. B., Walker, J. P., Western, A. W., Ellett, K. M., Grayson, R. B. and Rodell, M., 2004. Factors Affecting the Detection of a Soil Moisture Signal in Field Relative Gravity Measurements, EOS, Transactions American Geophysical Union, Western Pacific Meeting Supplement, Abstract H23C-02.

Dong, J., Walker, J. P., Houser, P. R., Foster, J. L. and Kelly, R., 2004. Investigation on the Uncertainty of Passive Microwave Snow Water Equivalent Estimates, EOS, Transactions American Geophysical Union, Western Pacific Meeting Supplement, Abstract H23A-60.

Rüdiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2004. Retrieving Soil Moisture States Using Streamflow Assimilation, EOS, Transactions American Geophysical Union, 85(17), Joint Assembly Supplement, Abstract H12B-03.

Savige, C. L., French, A. N., Western, A. W., Walker, J. P., Abuzar, M., Hacker, J. M. and Kalma, J. D., 2004. Testing Remotely Sensed Evapotranspiration Estimates Using Airborne and Ground Measurements, EOS, Transactions American Geophysical Union, 85(17), Joint Assembly Supplement, Abstract H12B-04.

Ellett, K. M., Walker, J. P., Grayson, R. B., Smith, A. and Rodell, M, 2004. GRACE in the Murray Darling Basin: Integrating Remote Sensing with Field Monitoring to Improve Hydrological Model Prediction, EOS, Transactions American Geophysical Union, 85(17), Joint Assembly Supplement, Abstract H23A-02.

Hemakumara, M., Rüdiger, C., Jacobs, B., Kalma, J. D., Walker, J. P., Willgoose, G. R., Hancock, G. and Saco, P., 2004. Scaling and Assimilation of Soil Moisture and Streamflow (SASMAS): Project Overview and Preliminary Results, Geophysical Research Abstracts, 6, 06693, EGU, Nice, France, April 2004.

Ellett, K. M., Walker, J. P., Grayson, R. B., Smith, A. and Rodell, M, 2004. GRACE in the Murray Darling Basin: Integrating Remote Sensing with Field Monitoring to Improve Hydrological Model Prediction, GRACE Hydrology Workshop, Irvine, USA, March 2004. Invited

Ellett, K., Walker, J. P., Grayson, R. B., Smith, A. and Rodell, M., 2004. GRACE in the Murray-Darling Basin: Using Gravity Measurements to Improve Hydrologic Prediction in Catchment-scale Models, Workshop on Prediction in Ungauged Basins, Perth, Australia, Febuary 2004.

Walker, J. P., Grayson, R. B., Panciera, R., Zhan, X., and Houser, P. R., 2003. AMSR-E Soil Moisture Validation Efforts in the Australian Arid Zone, EOS, Transactions American Geophysical Union, 84(46), Fall Meeting Supplement, Abstract H22E-05.

Walker, J. P., Ursino, N., Grayson, R. B., and Houser, P. R., 2003. Root Zone Soil Moisture: Assimilation of SMMR Observations, Geophysical Research Abstracts [CD-ROM], 5, EAE03-A-01090, AGU-EGS-EGU Joint Assembly, Nice, France, April 2003.

Walker, J. P., Grayson, R. B., Rodell, M. and Ellett, K. M., 2003. Gravity Changes, Soil Moisture and Data Assimilation, Geophysical Research Abstracts [CD-ROM], 5, EAE03-A-04526, AGU-EGS-EGU Joint Assembly, Nice, France, April 2003.

Rodell, M., Velicogna, I., Walker, J. P., and Reichle, R., 2003. Assimilation of GRACE Derived Terrestrial Water Storage into a Hydrological Land Surface Model, Geophysical Research Abstracts [CD-ROM], 5, EAE03-A-13397, AGU-EGS-EGU Joint Assembly, Nice, France, April 2003.

Ni-Meister, W., Walker, J. P., Reichle, R. H., Houser, P. R., and Koster, R. D., 2002. Soil Moisture Intialization for Climate Predictions: Assimilating SMMR into a Land Surface Model, EOS, Transactions American Geophysical Union, 83(47), Fall Meeting Supplement, Abstract H62D-0894.

Zhan, X., Houser, P. R., Walker, J. P. and Reichle, R. H., 2002. Estimation of Model Error Covariance Matrices of the Extended Kalman Filter for Validation of AMSR-E Soil Moisture Product, EOS, Transactions American Geophysical Union, 83(47), Fall Meeting Supplement, Abstract H62D-0895.

Walker, J. P., 2002. Towards an Australian Root Zone Soil Moisture Product, Willgoose Symposium, Newcastle, Australia, 25 October, 2002.

Rüdiger, C., Walker, J. P., Willgoose G. R., Kalma, J. D., Davidson, R., Hemakumara, M., Houser, P. R. and Woods, R., 2002. Scaling and Assimilation of Soil Moisture and Streamflow (SASMAS), Willgoose Symposium, Newcastle, Australia, 25 October, 2002.

Davidson, R. E. and Walker, J. P., 2002. Soil Moisture Monitoring in the Goulburn River Catchment, Willgoose Symposium, Newcastle, Australia, 25 October, 2002.

Zhan, X., Entin, J., Houser, P. R., Reichle, R. H. and Walker, J. P., 2002. Application of Kalman Filtering for Soil Moisture Data Assimilation in GSFC's Land Data Assimilation System, EOS, Transactions American Geophysical Union, 83(19): S194.

Meng, C. J., Houser, P. R., Mitchell, K., Rodell, M., Gottschalck, J., Jambor, U., Arsenault, K., Bosilovich, M., Cosgrove, B., Entin, J. K., Radakovich, J., Walker, J. P., Pan, H. and Gayno, G., 2002. Validation of Global LDAS Radiative Forcing, EOS, Transactions American Geophysical Union, 83(19): S163.

Walker, J. P. and Houser, P. R., 2001. Initialization of Soil Moisture in a Global Climate Model: A North American Case Study, EOS, Transactions American Geophysical Union, 82(47): F457.

Ni-Meister, W., Walker, J. P. and Houser, P. R., 2001. Better use of Remotely Sensed Soil Moisture to Initialize Soil Moisture in Global Climate Models, EOS, Transactions American Geophysical Union, 82(47): F457.

Meng, C. J., Houser, P. R., Mitchell, K., Gayno, G., Rodell, M., Jambor, U., Gottschalck, J., Cosgrove, B., Radakovich, J., Arsenault, K., Bosilovich, M., Entin, J. K., Walker, J. P. and Pan, H., 2001. Implementation of the AFWA AGRMET Solar Radiation Scheme in GLDAS, EOS, Transactions American Geophysical Union, 82(47): F422.

Houser, P. R., Sun, C. and Walker, J. P., 2001. Continental-scale Assimilation of Remotely Sensed Snow Observations, EOS, Transactions American Geophysical Union, 82(47): F548. Invited

Walker, J. P. and Houser, P. R., 2001. Initialization of Soil Moisture in a Global Climate Model: A North American Case Study, In: E. E. van Loon and P. A. Troch (Ed.), Book of Abstracts: International Worshop on Catchment-scale Hydrological Modeling and Data Assimilation, Wageningen, The Netherlands, September 3-5, 2001, Rapport 101.

Sun, C., Walker, J. P. and Houser, P. R., 2001. Assimilation of Remotely Sensed Snow Observations in a Catchment-based Land Surface Model, In: E. E. van Loon and P. A. Troch (Ed.), Book of Abstracts: International Worshop on Catchment-scale Hydrological Modeling and Data Assimilation, Wageningen, The Netherlands, September 3-5, 2001, Rapport 101.

Reichle, R. H., Walker, J. P., Koster, R. D., Reinecker, M. M. and Houser, P. R., 2001. Soil Moisture Assimilation with the Ensemble Kalman Filter in Support of NASA's Seasonal-to-Interannual Prediction Project, In: E. E. van Loon and P. A. Troch (Ed.), Book of Abstracts: International Worshop on Catchment-scale Hydrological Modeling and Data Assimilation, Wageningen, The Netherlands, September 3-5, 2001, Rapport 101.

Walker, J. P. and Houser, P. R., 2001. Accuracy Requirements for a Soil Moisture Mission, EOS, Transactions American Geophysical Union, 82(20): S158.

Berg, A. A., Famiglietti, J. S., Walker, J. P., and Houser, P. R., 2001. The Sensitivity of Land Surface Model Simulations to the NCEP/NCAR, ERA-15, and Bias Reduced Forcing Datasets, EOS, Transactions American Geophysical Union, 82(20): S188.

Sun, C., Walker, J. P. and Houser, P. R., 2001. Snow Data Assimilation in a Catchment-Based Land Surface Model, EOS, Transactions American Geophysical Union, 82(20): S158.

Entin, J. K., Houser, P. R., Walker, J. P. and Bourke, E., 2001. Data Assimilation of 10 GHz Brightness Temperatures into a Land Surface Model, EOS, Transactions American Geophysical Union, 82(20): S186.

Famiglietti, J. S., Olivera, F., Walker, J. P., Houser, P. R. and Rodell, M., 2001. A Catchment-Based Global River Routing Scheme for Climate Models and Assimilation of Streamflow and Altimetry Data, European Geophysical Society 26th General Assembly, Nice, France, 20-25 March 2001.

Berg, A. A., Famiglietti, J. S., Walker, J. P. and Houser, P. R., 2000. Production of a Catchment-Based Hydrometeorological Forcing Data Set for North America, EOS, Transactions American Geophysical Union, 81(48): F395.

Walker, J. P. and Houser, P. R., 2000. A Synthetic Study of Near-Surface Soil Moisture Assimilation for North America, EOS, Transactions American Geophysical Union, 81(19): S203.

Walker, J. P., Kurera, D. F. and Houser, P. R., 2000. A Field Evaluation of ERS-2 Synthetic Aperture Radar Data for Soil Moisture Measurement, EOS, Transactions American Geophysical Union, 81(19): S207.

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 1999. Assimilation of Surface Soil Moisture Data into a Model, EOS, Transactions American Geophysical Union, 80(46): F408.

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 1998. Towards Profile Soil Moisture Retrieval From Remote Sensing, EOS, Transactions American Geophysical Union, 79(17): S41.

Media

A Guiding Light: A Helping Hand, Weekend Australian, 15 September 2012. (pdf 241kB)

Yanco is Still Ideal for NASA, The Irrigator, 16 September 2011. (pdf 135kB)

On Target in Agriculture, 2RG, 9 September 2011. (mp3 9.8MB)

Satellites Could Keep Eye Out for Floods, New Scientist, 10 February 2011. (pdf 152kB)

Country Hour, ABC, May 2010. (mp3 1.9MB)

Australian Field Campaign Validates SMOS Data, European Space Agency, March 2010. (pdf 78kB)

Revolutionary Environmental Engineering Research, Melbourne University Staff/Student E-news, March 2010. (pdf 14kB)

Australian Research Council Annual Report 2007-08, 2008. (pdf 63kB)

The Word From on High: We're Drying Up Fast, Sydney Morning Herald, 30 December 2006. (pdf 19kB)

Staff Profile - Jeff Walker, CEE Bulletin, November 2006. (pdf 343kB)

Eye in Space to Help Gauge Deep Moisture in Farm Soils, Melbourne UniNews, 15(22), 27 November - 11 December 2006. (jpg 1.1MB)

2AY Interview on NAFE'06, 13 November 2006.

Planting Crops Set for High Tech Boost, Sydney Morning Herald, 11 November 2006. (jpg 2.1MB)

Space Satellite to Help Farmers Gauge Water Levels in Paddocks, University of Melbourne Media Release, 11 November 2006. (pdf 65kB)

Leetons Skies Aid in Making New Farm Tool, The Irrigator, 10 November 2006. (jpg 3.2MB)

Eye in the Sky, ABC Riverina, 9 November 2006. (wma 4.2MB)

Glider Collecting Soil, Climate Change Information, ABC News Online, 9 November 2006. (pdf 14kB)

Narrandera Community Radio Interview, Spirit FM, 7 November 2006. (wma 26.6MB)

Eye in the Sky Checks Soil Moisture Across Kyeamba Valley, NSW Department of Primary Industry Media Release, 30 October 2006. (pdf 17kB)

Satellites to Track Soil Moisture, The Land, 29 December 2005. (pdf 436kB)

Catchment Research, Manning River Times, 30 November 2005. (pdf 132kB)

Satellite Researchers, NBN News, 23 November 2005. (mpg 43MB)

2UG Interview on NAFE'05, xx November 2005.

Space Technology Hits Scone, Scone Advocate, Front Page, 17 November 2005. (jpg 588kB)

Weather Prediction Part of Research, Hunter Valley News, 16 November 2005. (jpg 356kB)

World Experts Study Merriwa Soil, Hunter Valley News, 9 November 2005. (jpg 496kB)

Australian Research Council Annual Report 2004-05, 2005. (pdf 38kB)

Dedicated SMOS Campaign Activities Down Under, ESA The Living Planet Programme News, 5 October 2005. (pdf 56kB)

Soil Mapping Project Funded, Land and Water News, 27 April 2005. (pdf 25kB)

Funding Boost for Data Rich Remote Soil Water Mapping, Melbourne UniNews, 14(6), 18 April - 2 May 2005. (pdf 14kB)

Sky No Limit on Soil Tests, The Weekly Times, 30 March 2005. (pdf 167kB)

Water Seekers Awared $1 Million, University of Melbourne Media Release, 17 March 2005. (pdf 15kB)