1. George Mason University and Center for Research on Environment and Water, Calverton, Maryland, and Laboratory of Hydrology and Water Management, Ghent University, Ghent, Belgium
2. Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland
3. George Mason University and Center for Research on Environment and Water, Calverton, Maryland
4. Laboratory of Hydrology and Water Management, Ghent University, Ghent, Belgium