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The SAGE III Ozone Loss and Validation Experiment (SOLVE II) was a measurement campaign designed to examine the processes controlling ozone levels at mid- to high latitudes. Measurements were made in the Arctic high-latitude region in winter 2002-03 using the NASA DC-8 aircraft, as well as balloon platforms and ground-based instruments. The mission also acquired correlative data needed to validate the Stratospheric Aerosol and Gas Experiment (SAGE) III satellite measurements that will be used to quantitatively assess high-latitude ozone loss. SOLVE is co-sponsored by the Upper Atmosphere Research Program (UARP), Atmospheric Effects of Aviation Project (AEAP), Atmospheric Chemistry Modeling and Analysis Program (ACMAP), and Earth Observing System (EOS) of NASA's Earth Science Enterprise (ESE) as part of the validation program for the SAGE III instrument.

The 14-channel Ames Airborne Tracking Sunphotometer (AATS-14) flew on the DC-8 in SOLVE II, acquiring measurements of ozone, aerosols, and water vapor.