The overall objective of the recently completed START08 experiment was to use in situ chemical, microphysical, and dynamical measurements, satellite data, and models to better understand the dynamical processes that control the chemical composition and microphysics of the ExUTLS. The START08 campaign was conducted during 2 intensive periods from mid-April to mid-May and from mid to late June, 2008. Airborne measurements were taken from the NSF HIAPER aircraft, which covered an altitude range up to approximately 14 km. In situ measurements of a wide range of trace gases, water vapor, aerosol properties, and vertical temperature structure were obtained under targeted dynamical conditions to better understand transport and mixing regimes in the area of the ExUTLS. Model analyses and satellite retrievals were used to direct the aircraft to appropriate regions.
This presentation will present an overview of the experiment and will highlight some initial results with examples of measurements and correlations that address START08 science objectives.