1. Center for Climatic Research, University of Wisconsin-Madison, Madison, Wisconsin
2. Space Science and Engineering Center, Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, Madison, Wisconsin
3. Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland
4. NASA, Marshall Space Flight Center, Earth Science Office, Huntsville, Alabama
5. USDA, Agricultural Research Service, Hydrology and Remote Sensing Laboratory, Beltsville, Maryland