Mr. Robbins has provided expertise in various geodetic, tectonic and cryospheric research efforts since 1984. His main present interests include the analysis of spaceborne laser altimeter and terrestrial-based satellite laser range data as applied to the detection, estimation and monitoring of various components of Earth surface and planetary dynamics. He serves as principal scientist for Craig Technologies Inc., of Cape Canaveral, FL, and supports (under contract, via telecommuting) NASA Goddard Spaceflight Center’s Cryospheric Branch in Greenbelt, MD. He is presently active in research and development efforts involving ICESat data, including software development as applied to the estimation, analysis and mapping of ice sheet surficial changes in Greenland and Antarctica as well as monitoring sea ice variations in the Arctic Ocean and seas surrounding Antarctica.