Numerical Experiments
• “Truth” Data Set
• Spin-up catchment-based LSM for 1987 using ISLSCP forcing data.
• Run the simulation for 1987 using ISLSCP forcing data and output
surface moisture data as “observations”.
• Open Loop Data Set
• Degrade the soil moisture prognostic variable spin-up states to make the
catchments artificially wet.
• Run the simulation for 1987 using ISLSCP forcing data.
• Assimilated Data Set
• Degrade the soil moisture prognostic variable spin-up states to make the
catchments artificially wet (as for the open loop).
• Run the simulation for 1987 using ISLSCP forcing data.
• Assimilate the surface “observations” once every 3 days using the
Kalman-filter.