1. a Department of Geography , 2181 Le Frak Hall , University of Maryland , College Park, MD 20742
2. b NOAA/NESDIS , 5200 Auth Rd Rm 401, Camp Springs, MD 20746
3. c Science Systems and Applications , Inc. , Lanham, MD 20706
4. d Space Science and Engineering Center , CIMSS/University of Wisconsin , 1225 West Dayton Street, Madison, WI 53706
5. e NASA's Goddard Space Flight Center Code 614.5 , Greenbelt, MD 20771