Dr. Steven Massie has 45 years of experience in analyzing and applying NASA satellite data. He has focused upon the effects of aerosols and clouds on the interpretation of satellite remote sensing data, and the effects of aerosols and clouds upon atmospheric physics in the Stratosphere and Troposphere. Major satellite program experience includes the Upper Atmospheric Research Satellite (UARS), Dr. John Gille’s HIRDLS experiment on the AURA satellite, and the Orbiting Carbon Observatory experiments (OCO-2 and OCO-3). The CLAES experiment on UARS made the first global measurements of Freon gases in the stratosphere. HIRDLS subvisible cirrus measurements were utilized with other data to quantify the expansion rate of the width of the tropics. Dr. Massie has been associated with the Orbiting Carbon Observatory project since 2011, focusing on 3D radiative transfer effects on OCO-2 retrievals of CO₂. He is also a team member of Dr. Peter Pilewskie’s Libera experiment (an Earth radiation budget experiment), which has a 2027 launch date.