Monitoring of atmospheric composition with IASI and MOPITT: CO distributions and trends

Abstract : Carbon monoxide (CO) is an important trace gas for understanding air quality and atmospheric composition. It is a good tracer of pollution plumes and atmospheric dynamics. In this talk we describe the analysis of global and regional CO distributions as seen by both the MOPITT/Terra and IASI/MetOp missions, from mid-2007 up to now. Long term trends for IASI and MOPITT (version 3, 4 and 5) CO total columns over specific areas are presented, and show excellent agreement. CO distributions over polluted and clean regions are compared. Preliminary results of a study comparing the surface CO level for the two sounders over different cities will be presented, using MOPITT version 5 products that include the NIR and show a better sensitivity near the ground. Finally, this talk will also illustrate how the data processed at ULB-LATMOS are currently assimilated in the MACC project in near-real time in order to generate the CO pollution forecasts over Europe. Surface CO obtained after assimilation show better agreement with ground-based station measurements.
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Submitted on : Tuesday, January 31, 2012 - 3:44:44 PM
Last modification on : Sunday, July 21, 2019 - 6:40:50 AM

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  • HAL Id : hal-00664865, version 1

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Maya George, Cathy Clerbaux, Juliette Hadji-Lazaro, Idir Bouarar, D. Hurtmans, et al.. Monitoring of atmospheric composition with IASI and MOPITT: CO distributions and trends. AGU Fall Meeting 2011, Dec 2011, San Francisco, United States. ⟨hal-00664865⟩

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