Retrieval of sea surface temperature and trace gas column averaged from GOSAT, IASI-A, and IASI-B over the Arctic Ocean in summer 2010 and 2013

Abstract : The Arctic Ocean is a very important region of the globe in which the effect of climate change can be detected over short time periods. We have used the possibility provided by the three infrared sounders TANSO-FTS on the GOSAT platform, IASI-A, and IASI-B on the MetOp platforms to retrieve the sea surface temperature (Tsurf) and the column averaged mixing ratio of several trace gases (CO2, CH4, N2O, O3) for pairs of nearly coinciding footprints (IFOVs) at small time separations (typically for IASI ~46 mn and ~54 min depending on which satellite has first observed the corresponding scene). A strict filtering based on the AVHRR cloud fraction and the radiance analysis within the GOSAT and IASI footprints lead to a large number of quasi-coinciding IFOVs for which a 1D-var inversion (Tsurf and XCO2 as the main parameters in the state vector, plus scaling factors for the profiles of H2O and O3) has been performed. As an example, we used during retrieval the atmospheric window between 940 a
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Submitted on : Tuesday, April 19, 2016 - 3:44:04 PM
Last modification on : Wednesday, May 22, 2019 - 1:06:04 PM

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  • HAL Id : insu-01304316, version 1

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Sébastien Payan, Claude Camy-Peyret, Jérôme Bureau. Retrieval of sea surface temperature and trace gas column averaged from GOSAT, IASI-A, and IASI-B over the Arctic Ocean in summer 2010 and 2013 . 10th SPIE Asia-Pacific Remote Sensing Symposium, Apr 2016, New Delhi, India. ⟨insu-01304316⟩

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