A-Train Observations of Stratosphere-Troposphere Exchange During 2006
Abstract
Studies of jet stream and frontal boundary dynamics with atmospheric tracer measurements provide insight to the coupled stratosphere-troposphere system. A-Train satellite instruments possess the horizontal and vertical resolution along with temporal and spatial coincidence necessary to identify stratospheric intrusions, investigate their three-dimensional structure, and estimate cross-tropopause exchange. We present results from our analysis of tropospheric chemistry and dynamics using AIRS and Aura instruments to observe stratospheric intrusions along the polar jet during the 2006 Intercontinental Chemical Transport Experiment Phase B (INTEX-B) field experiment. Focusing on April-May 2006, we explore the temporal and spatial evolution of STE events over the Pacific Ocean originating off the eastern coast of China and traveling along the storm track to the North American west coast. With the broad swath of AIRS and the higher vertical resolution of Aura instruments like TES, ozone and water vapor retrievals show typical features of stratosphere-troposphere exchange in the UTLS near dominant meteorological structures. Analyses of in-situ and aircraft remote sensing measurements of these trace gases compare well with the satellite observations.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2007
- Bibcode:
- 2007AGUFM.A21E0774W
- Keywords:
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- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0365 Troposphere: composition and chemistry;
- 0368 Troposphere: constituent transport and chemistry