European Space Agency - ESTEC, Keplerlaan 1, Noordwijk, 2200 AG Netherlands
USDA-ARS Hydrology and Remote Sensing Lab, Bg. 007 BARC-West 10300 Baltimore Avenue, Beltsville, MD 20705-2350 United States
Massachussetts Institute of Technology, Ralph M. Parsons Laboratory, 48-331 Department of Civil and Environmental Engineering 77 Massachusetts Avenue, Room 1-290, Cambridge, Ma 02139-4307 United States