Summary

The Ozone Destruction Flux Experiment (O3DEST) utilized the QueenAir, A-80 aircraft to make direct eddy flux measurements of ozone with fast response ozone sensors. The measurements were used in two ways: first, as a tracer in the study of boundary layer dynamics and, secondly, to investigate the sources and sinks of ozone in the boundary layer. Project support was divided into two phases. Phase one consisted of several flights originating from Jefferson County Airport (Jeffco - now Rocky Mountain Municipal Airport) and overflying a site in the Pawnee Grasslands in Northeast Colorado. The area was close to Jeffco yet relatively far away from anthropogenic sources of trace constituents. Also, it was possible to find a relatively uniform surface from which to make surface measurements. Phase two consisted of ferrying the aircraft to a site along the Gulf of Mexico, collecting data during the flight. A single over water flight was then conducted with the flight back to Jeffco again being a sampling mission.