The Universities Space Research Association (USRA) is seeking a recent Ph.D. scientist for research involving the assimilation of snow observations into a land surface model. This research will contribute to the NASA Seasonal-to-Interannual Prediction Project (NSIPP) by providing snow pack initialization states and will add to the current efforts in soil moisture assimilation. The emphasis of this position will be on the development of a scheme for assimilating snow cover, snow depth, snow water equivalent and snow melt using the Kalman filter, which also removes land surface and air temperature bias. For more information about this effort see


This research will be performed in collaboration with scientists in the Hydrological Sciences Branch at NASA's Goddard Space Flight Center in Greenbelt, Maryland. The successful candidate will have full access to computing and other NASA facilities. Applicants should have a Ph.D. in hydrology or closely related field with experience in land surface modeling and/or data assimilation. Fortran programming experience is desirable.


The initial appointment will be for one year and is considered renewable. Salary will be competitive and commensurate with experience and qualifications. Please send a current vita and contact information for at least three professional references along with a brief statement of research interests, expected contributions to NASA's efforts, and availability by May 15 to:


Universities Space Research Association

Goddard Visiting Scientist Program

7501 Forbes Blvd., Suite 206

Seabrook, MD 20706



USRA is a non-profit consortium of 83 universities chartered to broaden opportunities for collaboration be­tween university and government space research communities.  USRA offers attractive benefits, including medical, dental, and life insurance, and relocation allowances. USRA is an equal opportunity employer. Tel (301) 805-8396, Fax (301) 805-8466, email


March 21, 2000