1. University of Maryland Baltimore County Goddard Earth Science Technology and Research II Greenbelt MD USA
2. NASA Goddard Space Flight Center Global Modeling and Assimilation Office Greenbelt MD USA
3. NASA Goddard Space Flight Center Biospheric Sciences Laboratory Greenbelt MD USA
4. Now at Geospatial Science and Human Security Division National Security Sciences Directorate Oak Ridge National Laboratory Oak Ridge TN USA