Dr. Henry B. Selkirk received his Ph. D. in Meteorology in 1986 from the Massachusetts Institute of Technology (MIT), Cambridge, MA. His Ph.D. thesis was an observational study of the Madden-Julian oscillation. Before joining GESTAR in May 2011, Dr. Selkirk worked at GEST/UMBC for three years, and had been working in the Earth Sciences Division at NASA Ames Research Center on topics related to tropical climate, weather and wave dynamics, atmospheric trace constituents, aerosols and transport processes, and stratosphere-troposphere exchange processes. He has participated in some 20 research aircraft missions since 1987 providing flight planning and meteorological support.