Enhancements of Satellite Data Assimilation over Antarctica

International audience The Concordiasi field experiment, which is taking place in Antarctica, involves the launching of radiosoundings and stratospheric balloons. One of the main goals of this campaign is the validation of the Infrared Atmospheric Sounding Interferometer (IASI) radiance assimilation...

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Published in:Monthly Weather Review
Main Authors: Bouchard, Aurélie, Rabier, Florence, Guidard, Vincent, Karbou, Fatima
Other Authors: Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), Concordiasi
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2010
Subjects:
Online Access:https://meteofrance.hal.science/meteo-00564271
https://meteofrance.hal.science/meteo-00564271/document
https://meteofrance.hal.science/meteo-00564271/file/%5B15200493%20-%20Monthly%20Weather%20Review%5D%20Enhancements%20of%20Satellite%20Data%20Assimilation%20over%20Antarctica.pdf
https://doi.org/10.1175/2009MWR3071.1
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spelling ftutoulouse3hal:oai:HAL:meteo-00564271v1 2024-09-15T17:42:07+00:00 Enhancements of Satellite Data Assimilation over Antarctica Bouchard, Aurélie Rabier, Florence Guidard, Vincent Karbou, Fatima Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Concordiasi 2010-06 https://meteofrance.hal.science/meteo-00564271 https://meteofrance.hal.science/meteo-00564271/document https://meteofrance.hal.science/meteo-00564271/file/%5B15200493%20-%20Monthly%20Weather%20Review%5D%20Enhancements%20of%20Satellite%20Data%20Assimilation%20over%20Antarctica.pdf https://doi.org/10.1175/2009MWR3071.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/2009MWR3071.1 meteo-00564271 https://meteofrance.hal.science/meteo-00564271 https://meteofrance.hal.science/meteo-00564271/document https://meteofrance.hal.science/meteo-00564271/file/%5B15200493%20-%20Monthly%20Weather%20Review%5D%20Enhancements%20of%20Satellite%20Data%20Assimilation%20over%20Antarctica.pdf doi:10.1175/2009MWR3071.1 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0027-0644 EISSN: 1520-0493 Monthly Weather Review https://meteofrance.hal.science/meteo-00564271 Monthly Weather Review, 2010, 138 (6), pp.2149-2173. ⟨10.1175/2009MWR3071.1⟩ Antarctica Satellite observations Data assimilation Numerical weather prediction Radiosonde observations [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2010 ftutoulouse3hal https://doi.org/10.1175/2009MWR3071.1 2024-06-25T00:11:19Z International audience The Concordiasi field experiment, which is taking place in Antarctica, involves the launching of radiosoundings and stratospheric balloons. One of the main goals of this campaign is the validation of the Infrared Atmospheric Sounding Interferometer (IASI) radiance assimilation. Prior to the campaign, it was necessary to improve satellite data assimilation at high latitudes. Two types of sensors, microwave and infrared, have been considered to help with this issue. A major problem associated with microwave satellite data is the calculation of the surface emissivity. An innovative approach, based on satellite observations, improves the surface emissivity modeling over land and sea ice within the constraints of the four-dimensional variational data assimilation (4D-VAR) system. With this new calculation of emissivity, it has been possible to include many more microwave observations during the assimilation. In this study, this method has been applied to high latitudes, after some adjustments have been made to assimilate additional Advanced Microwave Sounding Unit-A/B (AMSU-A/B) data over sea ice and snow. The use of additional data from IASI and the Atmospheric Infrared Sounder (AIRS) sensors over land and sea ice has also been tested. The use of the microwave and infrared data over this polar area has modified the dynamical and thermodynamical model fields such as the snow precipitation quantity. Additional data have been found to have a positive impact on the skill of a model specially tuned for Antarctica. Article in Journal/Newspaper Antarc* Antarctica Sea ice Université Toulouse III - Paul Sabatier: HAL-UPS Monthly Weather Review 138 6 2149 2173
institution Open Polar
collection Université Toulouse III - Paul Sabatier: HAL-UPS
op_collection_id ftutoulouse3hal
language English
topic Antarctica
Satellite observations
Data assimilation
Numerical weather prediction
Radiosonde observations
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
spellingShingle Antarctica
Satellite observations
Data assimilation
Numerical weather prediction
Radiosonde observations
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Bouchard, Aurélie
Rabier, Florence
Guidard, Vincent
Karbou, Fatima
Enhancements of Satellite Data Assimilation over Antarctica
topic_facet Antarctica
Satellite observations
Data assimilation
Numerical weather prediction
Radiosonde observations
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
description International audience The Concordiasi field experiment, which is taking place in Antarctica, involves the launching of radiosoundings and stratospheric balloons. One of the main goals of this campaign is the validation of the Infrared Atmospheric Sounding Interferometer (IASI) radiance assimilation. Prior to the campaign, it was necessary to improve satellite data assimilation at high latitudes. Two types of sensors, microwave and infrared, have been considered to help with this issue. A major problem associated with microwave satellite data is the calculation of the surface emissivity. An innovative approach, based on satellite observations, improves the surface emissivity modeling over land and sea ice within the constraints of the four-dimensional variational data assimilation (4D-VAR) system. With this new calculation of emissivity, it has been possible to include many more microwave observations during the assimilation. In this study, this method has been applied to high latitudes, after some adjustments have been made to assimilate additional Advanced Microwave Sounding Unit-A/B (AMSU-A/B) data over sea ice and snow. The use of additional data from IASI and the Atmospheric Infrared Sounder (AIRS) sensors over land and sea ice has also been tested. The use of the microwave and infrared data over this polar area has modified the dynamical and thermodynamical model fields such as the snow precipitation quantity. Additional data have been found to have a positive impact on the skill of a model specially tuned for Antarctica.
author2 Centre national de recherches météorologiques (CNRM)
Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP)
Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3)
Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3)
Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)
Concordiasi
format Article in Journal/Newspaper
author Bouchard, Aurélie
Rabier, Florence
Guidard, Vincent
Karbou, Fatima
author_facet Bouchard, Aurélie
Rabier, Florence
Guidard, Vincent
Karbou, Fatima
author_sort Bouchard, Aurélie
title Enhancements of Satellite Data Assimilation over Antarctica
title_short Enhancements of Satellite Data Assimilation over Antarctica
title_full Enhancements of Satellite Data Assimilation over Antarctica
title_fullStr Enhancements of Satellite Data Assimilation over Antarctica
title_full_unstemmed Enhancements of Satellite Data Assimilation over Antarctica
title_sort enhancements of satellite data assimilation over antarctica
publisher HAL CCSD
publishDate 2010
url https://meteofrance.hal.science/meteo-00564271
https://meteofrance.hal.science/meteo-00564271/document
https://meteofrance.hal.science/meteo-00564271/file/%5B15200493%20-%20Monthly%20Weather%20Review%5D%20Enhancements%20of%20Satellite%20Data%20Assimilation%20over%20Antarctica.pdf
https://doi.org/10.1175/2009MWR3071.1
genre Antarc*
Antarctica
Sea ice
genre_facet Antarc*
Antarctica
Sea ice
op_source ISSN: 0027-0644
EISSN: 1520-0493
Monthly Weather Review
https://meteofrance.hal.science/meteo-00564271
Monthly Weather Review, 2010, 138 (6), pp.2149-2173. ⟨10.1175/2009MWR3071.1⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.1175/2009MWR3071.1
meteo-00564271
https://meteofrance.hal.science/meteo-00564271
https://meteofrance.hal.science/meteo-00564271/document
https://meteofrance.hal.science/meteo-00564271/file/%5B15200493%20-%20Monthly%20Weather%20Review%5D%20Enhancements%20of%20Satellite%20Data%20Assimilation%20over%20Antarctica.pdf
doi:10.1175/2009MWR3071.1
op_rights http://creativecommons.org/licenses/by/
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container_title Monthly Weather Review
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container_issue 6
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