1. Dep. of Plant and Soil Sciences; Oklahoma State Univ.; 368 Agricultural Hall Stillwater OK 74078
2. USDA-ARS; Hydrology and Remote Sensing Lab.; Beltsville MD 20705
3. Dep. of Biological and Ecological Engineering; Oregon State Univ.; Corvallis OR 97331
4. Dep. of Geodesy and Geoinformation; Vienna Univ. of Technology; 1040 Vienna Austria
5. Global Modeling and Assimilation Office; NASA Goddard Space Flight Center; Greenbelt MD 20771
6. GESTAR Universities Space Research Association; Columbia MD 21044
7. Centre d'Etudes Spatiales de la Biosphere; 31401 Toulouse France
8. Dep. of Aerospace Engineering Sciences; Univ. of Colorado; Boulder CO 80309
9. Jet Propulsion Laboratory; California Institute of Technology; Pasadena CA 91109
10. Dep. of Geological Sciences; Univ. of Colorado; Boulder CO 80309
11. Dep. of Hydrology and Water Resources; Univ. of Arizona; Tucson AZ 85721