1. Earth System Science Interdisciplinary Center University of Maryland College Park MD USA
2. Department of Oceanography and Coastal Sciences Louisiana State University Baton Rouge LA USA
3. Center for Computation & Technology Louisiana State University Baton Rouge LA USA
4. Geodesy and Geophysics Laboratory NASA Goddard Space Flight Center Greenbelt MD USA
5. Goddard Earth Science and Technology Research (GESTAR) II University of Maryland Baltimore County MD USA