Feng Li, Goddard Earth Sciences Technology and Research, Universities Space Research Association, Greenbelt, MD, United States, Paul A. Newman, NASA GSFC, Code 610, Greenbelt, MD, United States, Yury V Vikhliaev, Universities Space Research Association Greenbelt, Greenbelt, MD, United States and Richard I Cullather, NASA/GSFC Code 610.1, Greenbelt, MD, United States