CO monitoring with IASI: global and local variability

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. Since the launch of the MetOp satellite, IASI CO concentrations are retrieved on a daily base and in near real time from the radiance data, using the Fast Operational/Optimal Retrievals on Layers for IASI (FORLI) algorithm. These products are now generated and operationally distributed by EUMETCAST under the O3MSAF auspices. Global scale CO distributions will be shown, and the seasonal/annual variabilities over 8 years will be analyzed. A special focus will be put on the record concentrations observed over the islands of Borneo and Sumatra in the fall 2015, due to the worst forest fires in nearly two decades. This pollution excess is associated with the predictable impacts of the strong El Niño currently underway. We will provide estimates of the carbon emissions using a data-assimilation system that derives CO emissions from IASI data. Finally, we will show how this event is taken into account by the Copernicus Atmospheric Monitoring Service, and the usefulness of the IASI data in this context.
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Submitted on : Wednesday, April 20, 2016 - 8:33:04 PM
Last modification on : Tuesday, August 13, 2019 - 10:16:02 AM

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  • HAL Id : insu-01305354, version 1

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Maya George, Cathy Clerbaux, Juliette Hadji-Lazaro, Daniel Hurtmans, Sophie Bauduin, et al.. CO monitoring with IASI: global and local variability. 4th IASI International Conference, Apr 2016, Antibes Juan-Les-Pins, France. ⟨insu-01305354⟩

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