Large-scale transport of a CO-enhanced air mass from Europe to the Middle East |
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| Authors: | V S Connors T Miles H G Reichle Jr |
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| Institution: | (1) Atmospheric Sciences Division, NASA Langley Research Center, 23665-5225 Hampton, VA, U.S.A. |
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| Abstract: | On 14 November 1981, the shuttle-borne Measurement of Air Pollution from Satellites (MAPS) experiment observed a carbon monoxide (CO) enhanced air mass in the middle troposphere over the Middle East. The primary source of this polluted air was estimated by constructing adiabatic isentropic trajectories backwards from the MAPS measurement location over a 36 h period. The isentropic diagnostics indicate that CO-enhanced air was transported southeastward over the Mediterranean from an organized synoptic-scale weather regime, albeit of moderate intensity, influencing central Europe on 12 November. Examination of the evolving synoptic scale vertical velocity and precipitation patterns during this period, in conjunction with METEOSAT visible, infrared, and water vapor imagery, suggests that the presence of this disturbed weather system over Europe may have created upward transport of CO-enhanced air between the boundary-layer and midtropospheric levels, and subsequent entrainment in the large-scale northwesterly jet stream flow over Europe and the Mediterranean. |
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| Keywords: | Carbon monoxide tropospheric transport processes trajectory analysis |
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