1 UMBC/Goddard Earth
Science and Technology Center, Greenbelt, MD
2 NASA/GSFC Hydrological
Sciences Branch, Greenbelt, MD
3 Office of Earth
Science, NASA Headquarters, Washington, DC
4 The University of
Melbourne, Parkville, Victoria 3010, Australia
Xiwu
Zhan 1, 2, J. K. Entin 3, P. R. Houser 2
J. P.
Walker 4 , R. H. Reichle 1, 2