Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean
International audience Sea surface height, sea surface temperature, and temperature profiles at depth collected between January and December 2005 are assimilated into a realistic eddy permitting primitive equation model of the North Atlantic Ocean using the Ensemble Kalman Filter. Sixty ensemble mem...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://insu.hal.science/insu-01218081 https://insu.hal.science/insu-01218081/document https://insu.hal.science/insu-01218081/file/ark%20_67375_WNG-NRS07L2D-T-1.pdf https://doi.org/10.1002/2014JC010349 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Yan, Y. Barth, A. Beckers, J.-M. Candille, Guillem Brankart, J. M. Brasseur, Pierre Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Sea surface height, sea surface temperature, and temperature profiles at depth collected between January and December 2005 are assimilated into a realistic eddy permitting primitive equation model of the North Atlantic Ocean using the Ensemble Kalman Filter. Sixty ensemble members are generated by adding realistic noise to the forcing parameters related to the temperature. The ensemble is diagnosed and validated by comparison between the ensemble spread and the model/observation difference, as well as by rank histogram before the assimilation experiments. An incremental analysis update scheme is applied in order to reduce spurious oscillations due to the model state correction. The results of the assimilation are assessed according to both deterministic and probabilistic metrics with independent/semiindependent observations. For deterministic validation, the ensemble means, together with the ensemble spreads are compared to the observations, in order to diagnose the ensemble distribution properties in a deterministic way. For probabilistic validation, the continuous ranked probability score (CRPS) is used to evaluate the ensemble forecast system according to reliability and resolution. The reliability is further decomposed into bias and dispersion by the reduced centered random variable (RCRV) score in order to investigate the reliability properties of the ensemble forecast system. The improvement of the assimilation is demonstrated using these validation metrics. Finally, the deterministic validation and the probabilistic validation are analyzed jointly. The consistency and complementarity between both validations are highlighted. |
author2 |
Université de Liège GeoHydrodynamics and Environment Research (GHER) Honorary Research Associate Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Yan, Y. Barth, A. Beckers, J.-M. Candille, Guillem Brankart, J. M. Brasseur, Pierre |
author_facet |
Yan, Y. Barth, A. Beckers, J.-M. Candille, Guillem Brankart, J. M. Brasseur, Pierre |
author_sort |
Yan, Y. |
title |
Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean |
title_short |
Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean |
title_full |
Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean |
title_fullStr |
Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean |
title_full_unstemmed |
Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean |
title_sort |
ensemble assimilation of argo temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the north atlantic ocean |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://insu.hal.science/insu-01218081 https://insu.hal.science/insu-01218081/document https://insu.hal.science/insu-01218081/file/ark%20_67375_WNG-NRS07L2D-T-1.pdf https://doi.org/10.1002/2014JC010349 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-01218081 Journal of Geophysical Research. Oceans, 2015, 120 (7), pp.5134-5157. ⟨10.1002/2014JC010349⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2014JC010349 insu-01218081 https://insu.hal.science/insu-01218081 https://insu.hal.science/insu-01218081/document https://insu.hal.science/insu-01218081/file/ark%20_67375_WNG-NRS07L2D-T-1.pdf doi:10.1002/2014JC010349 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2014JC010349 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
120 |
container_issue |
7 |
container_start_page |
5134 |
op_container_end_page |
5157 |
_version_ |
1797588194616672256 |
spelling |
ftinsu:oai:HAL:insu-01218081v1 2024-04-28T08:30:16+00:00 Ensemble assimilation of ARGO temperature profile, sea surface temperature, and altimetric satellite data into an eddy permitting primitive equation model of the North Atlantic Ocean Yan, Y. Barth, A. Beckers, J.-M. Candille, Guillem Brankart, J. M. Brasseur, Pierre Université de Liège GeoHydrodynamics and Environment Research (GHER) Honorary Research Associate Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2015-07 https://insu.hal.science/insu-01218081 https://insu.hal.science/insu-01218081/document https://insu.hal.science/insu-01218081/file/ark%20_67375_WNG-NRS07L2D-T-1.pdf https://doi.org/10.1002/2014JC010349 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1002/2014JC010349 insu-01218081 https://insu.hal.science/insu-01218081 https://insu.hal.science/insu-01218081/document https://insu.hal.science/insu-01218081/file/ark%20_67375_WNG-NRS07L2D-T-1.pdf doi:10.1002/2014JC010349 info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-01218081 Journal of Geophysical Research. Oceans, 2015, 120 (7), pp.5134-5157. ⟨10.1002/2014JC010349⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftinsu https://doi.org/10.1002/2014JC010349 2024-04-05T00:38:11Z International audience Sea surface height, sea surface temperature, and temperature profiles at depth collected between January and December 2005 are assimilated into a realistic eddy permitting primitive equation model of the North Atlantic Ocean using the Ensemble Kalman Filter. Sixty ensemble members are generated by adding realistic noise to the forcing parameters related to the temperature. The ensemble is diagnosed and validated by comparison between the ensemble spread and the model/observation difference, as well as by rank histogram before the assimilation experiments. An incremental analysis update scheme is applied in order to reduce spurious oscillations due to the model state correction. The results of the assimilation are assessed according to both deterministic and probabilistic metrics with independent/semiindependent observations. For deterministic validation, the ensemble means, together with the ensemble spreads are compared to the observations, in order to diagnose the ensemble distribution properties in a deterministic way. For probabilistic validation, the continuous ranked probability score (CRPS) is used to evaluate the ensemble forecast system according to reliability and resolution. The reliability is further decomposed into bias and dispersion by the reduced centered random variable (RCRV) score in order to investigate the reliability properties of the ensemble forecast system. The improvement of the assimilation is demonstrated using these validation metrics. Finally, the deterministic validation and the probabilistic validation are analyzed jointly. The consistency and complementarity between both validations are highlighted. Article in Journal/Newspaper North Atlantic Institut national des sciences de l'Univers: HAL-INSU Journal of Geophysical Research: Oceans 120 7 5134 5157 |