Journal ArticleDOI
FORLI radiative transfer and retrieval code for IASI
Daniel Hurtmans,Pierre-François Coheur,Catherine Wespes,Lieven Clarisse,Oliver Scharf,Cathy Clerbaux,Cathy Clerbaux,Juliette Hadji-Lazaro,Maya George,Solène Turquety +9 more
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In this article, the authors lay down the theoretical bases and the methods used in the Fast Optimal Retrievals on Layers for IASI (FORLI) software, which is developed and maintained at the Universite Libre de Bruxelles (ULB) with the support of the "Laboratoire Atmospheres, Milieux, Observations Spatiales" (LATMOS) to process radiance spectra from the Infrared Atmospheric Sounding Interferometer (IASI) in the perspective of local to global chemistry applications.Abstract:
This paper lays down the theoretical bases and the methods used in the Fast Optimal Retrievals on Layers for IASI (FORLI) software, which is developed and maintained at the "Universite Libre de Bruxelles" (ULB) with the support of the "Laboratoire Atmospheres, Milieux, Observations Spatiales" (LATMOS) to process radiance spectra from the Infrared Atmospheric Sounding Interferometer (IASI) in the perspective of local to global chemistry applications. The forward radiative transfer model (RTM) and the retrieval approaches are formulated and numerical approximations are described. The aim of FORLI is near-real-time provision of global scale concentrations of trace gases from IASI, either integrated over the altitude range of the atmosphere (total columns) or vertically resolved. To this end, FORLI uses precalculated table of absorbances. At the time of writing three gas-specific versions of this algorithm have been set up: FORLI-CO, FORLI-O3 and FORLI-HNO3. The performances of each are reviewed and illustrations of results and early validations are provided, making the link to recent scientific publications. In this paper we stress the challenges raised by near-real-time processing of IASI, shortly describe the processing chain set up at ULB and draw perspectives for future developments and applications.read more
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Extending the Satellite Data Record of Tropospheric Ozone Profiles from Aura-TES to MetOp-IASI
Hilke Oetjen,Vivienne Payne,Susan S. Kulawik,Jessica L. Neu,Annmarie Eldering,John Worden,David P. Edwards,Gene Francis,Helen M. Worden +8 more
TL;DR: In this paper, the Tropospheric Emission Spectrometer (TES) ozone retrieval algorithm was applied to Infrared Atmospheric Sounding Instrument (IASI) radiances and characterised the uncertainties and information content of the retrieved ozone profiles.
Posted ContentDOI
The influence of weather-driven processes on tropospheric ozone
Tamara Emmerichs,Bruno Franco,Catherine Wespes,Vinod Kumar,Andrea Pozzer,Simon Rosanka,Domenico Taraborrelli +6 more
TL;DR: The role of water in the reaction of HO2 radical with nitrogen oxides is known from the literature, and in current models the water complex is considered by assuming a linear dependence on water concentrations as discussed by the authors.
Posted ContentDOI
Changes in biomass burning, wetland extent, or agriculture drive atmospheric NH 3 trends in select African regions
Jonathan E. Hickman,Niels Andela,Niels Andela,Enrico Dammers,Lieven Clarisse,Pierre-François Coheur,Martin Van Damme,Courtney A. Di Vittorio,Money Ossohou,Corinne Galy-Lacaux,Kostas Tsigaridis,Kostas Tsigaridis,Susanne E. Bauer +12 more
TL;DR: In this article, the Infrared Atmospheric Sounding Interferometer (IASI) was used along with other satellite observations of the land surface and atmosphere to evaluate how NH 3 concentrations have changed over Africa from 2008 through 2018, and what has caused those changes.
Journal ArticleDOI
Reduced major axis approach for correcting GPM/GMI radiometric biases to coincide with radiative transfer simulation
Tanvir Islam,Tanvir Islam,Prashant K. Srivastava,Prashant K. Srivastava,George P. Petropoulos,Sudhir Kumar Singh +5 more
TL;DR: The RARMA algorithm as mentioned in this paper is a static bias correction algorithm, which is developed using the reduced major axis (RMA) regression approach to correct the observed radiometric biases so that the observed radiances coincide with the simulation of a radiative transfer model.
Journal ArticleDOI
The impact of organic pollutants from Indonesian peatland fires on the tropospheric and lower stratospheric composition
Simon Rosanka,Bruno Franco,Lieven Clarisse,Pierre-François Coheur,Andrea Pozzer,Andreas Wahner,Domenico Taraborrelli +6 more
TL;DR: In this article, the authors investigated the effect of in-cloud oxygenated VOC (OVOC) oxidation during a strong pollution event in the Indonesian peatland fires in 2015.
References
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Atmospheric radiative transfer modeling: a summary of the AER codes
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New refinements and validation of the MODIS Land-Surface Temperature/Emissivity products
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Atmospheric Chemistry Experiment (ACE): Mission overview.
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TL;DR: The Atmospheric Chemistry Experiment (ACE) is a Canadian satellite mission for remote sensing of the Earth's atmosphere that was launched into low Earth circular orbit (altitude 650 km, inclination 74°) on 12 Aug. 2003.
Journal ArticleDOI
Monitoring of atmospheric composition using the thermal infrared IASI/METOP sounder
Cathy Clerbaux,Cathy Clerbaux,Anne Boynard,Anne Boynard,Lieven Clarisse,Michael George,Juliette Hadji-Lazaro,Hervé Herbin,Daniel Hurtmans,Matthieu Pommier,Ariane Razavi,Solène Turquety,Catherine Wespes,Pierre-François Coheur +13 more
TL;DR: The IASI nadir looking thermal infrared sounder onboard MetOp will provide 15 years of global scale observations for a series of key atmospheric species, with unprecedented spatial sampling and coverage as discussed by the authors.
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