Research Scientist, NASA Goddard Space Flight Center
Watson Gregg served as Mission Operations Director for the SeaWiFS mission from 1991-1997. In this capacity he developed command scheduling software and navigation algorithms for SeaWiFS. He also developed an end-to-end mission simulation system that was used to design and test operations, data processing, algorithms, and validation methods before launch. After SeaWiFS was operational, he undertook scientific investigations including global biogeochemical modeling, ocean color assimilation, and analysis of historical ocean color missions.