Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation
International audience Sea Surface Salinity (SSS) has never been observed from space. The SSS from planned satellite missions such as Soil Moisture and Ocean Salinity (SMOS) and Aquarius is a key to better understanding how ocean circulation is related to water cycle and how both these systems are c...
Published in: | Remote Sensing of Environment |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2008
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Online Access: | https://doi.org/10.1016/j.rse.2007.06.023 https://hal.archives-ouvertes.fr/hal-00265893/file/Expected2007.pdf https://hal.archives-ouvertes.fr/hal-00265893 |
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openpolar |
institution |
Open Polar |
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Unknown |
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fttriple |
language |
English |
topic |
Data assimilation Sea Surface Salinity OSSE geo envir |
spellingShingle |
Data assimilation Sea Surface Salinity OSSE geo envir Tranchant, Benoît Testut, Charles-Emmanuel Renault, Lionel Ferry, Nicolas Birol, Florence Brasseur, Pierre Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation |
topic_facet |
Data assimilation Sea Surface Salinity OSSE geo envir |
description |
International audience Sea Surface Salinity (SSS) has never been observed from space. The SSS from planned satellite missions such as Soil Moisture and Ocean Salinity (SMOS) and Aquarius is a key to better understanding how ocean circulation is related to water cycle and how both these systems are changing through time. The Observing System Simulation Experiments (OSSEs) presented in this paper has been carried out with an ocean forecasting system developed within the French oceanographic Mercator Ocean context. They consist in hindcast experiments assimilating an operational dataset (Sea Surface Temperature (SST), in-situ profiles of temperature and salinity and Sea Level Anomalies (SLA)) and various simulated SMOS and Aquarius Sea Surface Salinity (SSS) data. These experiments use an eddy permitting model (1/3°) covering the North Atlantic from 20°S to 70°N. The new generation of fully multivariate assimilation system referred to as SAM2v1 which is being developed from the SEEK (Singular Evolutive Extended Kalman) algorithm is used. This scheme is a Reduced Order Kalman Filter using a 3D multivariate modal decomposition of the forecast error covariance. The OSSEs enabled us to show the positive impact of SSS assimilation on the Mercator Ocean operational forecasting system. These experiments particularly show the importance to specify appropriated observation errors and the impact of having and/or combining different observing system. Several conclusions can be highlighted such as the importance of the space/time scales consistency between the data products and our ocean prediction systems. This study has to be considered as an important step for assimilation of SSS measured from space. Further studies have to be conducted with other simulated data, other oceanic configurations and other improved assimilation schemes. |
author2 |
Mercator Océan Société Civile CNRS Ifremer IRD Météo-France SHOM CERFACS Toulouse Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Écoulements Géophysiques et Industriels Grenoble (LEGI) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF) |
format |
Article in Journal/Newspaper |
author |
Tranchant, Benoît Testut, Charles-Emmanuel Renault, Lionel Ferry, Nicolas Birol, Florence Brasseur, Pierre |
author_facet |
Tranchant, Benoît Testut, Charles-Emmanuel Renault, Lionel Ferry, Nicolas Birol, Florence Brasseur, Pierre |
author_sort |
Tranchant, Benoît |
title |
Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation |
title_short |
Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation |
title_full |
Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation |
title_fullStr |
Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation |
title_full_unstemmed |
Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation |
title_sort |
expected impact of the future smos and aquarius ocean surface salinity missions in the mercator ocean operational systems: new perspectives to monitor ocean circulation |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://doi.org/10.1016/j.rse.2007.06.023 https://hal.archives-ouvertes.fr/hal-00265893/file/Expected2007.pdf https://hal.archives-ouvertes.fr/hal-00265893 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0034-4257 EISSN: 1879-0704 Remote Sensing of Environment Remote Sensing of Environment, Elsevier, 2008, 112, pp.1476-1487. ⟨10.1016/j.rse.2007.06.023⟩ |
op_relation |
hal-00265893 doi:10.1016/j.rse.2007.06.023 10670/1.alcsny https://hal.archives-ouvertes.fr/hal-00265893/file/Expected2007.pdf https://hal.archives-ouvertes.fr/hal-00265893 |
op_rights |
lic_creative-commons other |
op_doi |
https://doi.org/10.1016/j.rse.2007.06.023 |
container_title |
Remote Sensing of Environment |
container_volume |
112 |
container_issue |
4 |
container_start_page |
1476 |
op_container_end_page |
1487 |
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1766134498393587712 |
spelling |
fttriple:oai:gotriple.eu:10670/1.alcsny 2023-05-15T17:35:21+02:00 Expected impact of the future SMOS and Aquarius Ocean surface salinity missions in the Mercator Ocean operational systems: new perspectives to monitor ocean circulation Tranchant, Benoît Testut, Charles-Emmanuel Renault, Lionel Ferry, Nicolas Birol, Florence Brasseur, Pierre Mercator Océan Société Civile CNRS Ifremer IRD Météo-France SHOM CERFACS Toulouse Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Écoulements Géophysiques et Industriels Grenoble (LEGI) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF) 2008-01-01 https://doi.org/10.1016/j.rse.2007.06.023 https://hal.archives-ouvertes.fr/hal-00265893/file/Expected2007.pdf https://hal.archives-ouvertes.fr/hal-00265893 en eng HAL CCSD Elsevier hal-00265893 doi:10.1016/j.rse.2007.06.023 10670/1.alcsny https://hal.archives-ouvertes.fr/hal-00265893/file/Expected2007.pdf https://hal.archives-ouvertes.fr/hal-00265893 lic_creative-commons other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0034-4257 EISSN: 1879-0704 Remote Sensing of Environment Remote Sensing of Environment, Elsevier, 2008, 112, pp.1476-1487. ⟨10.1016/j.rse.2007.06.023⟩ Data assimilation Sea Surface Salinity OSSE geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2008 fttriple https://doi.org/10.1016/j.rse.2007.06.023 2023-01-22T17:20:36Z International audience Sea Surface Salinity (SSS) has never been observed from space. The SSS from planned satellite missions such as Soil Moisture and Ocean Salinity (SMOS) and Aquarius is a key to better understanding how ocean circulation is related to water cycle and how both these systems are changing through time. The Observing System Simulation Experiments (OSSEs) presented in this paper has been carried out with an ocean forecasting system developed within the French oceanographic Mercator Ocean context. They consist in hindcast experiments assimilating an operational dataset (Sea Surface Temperature (SST), in-situ profiles of temperature and salinity and Sea Level Anomalies (SLA)) and various simulated SMOS and Aquarius Sea Surface Salinity (SSS) data. These experiments use an eddy permitting model (1/3°) covering the North Atlantic from 20°S to 70°N. The new generation of fully multivariate assimilation system referred to as SAM2v1 which is being developed from the SEEK (Singular Evolutive Extended Kalman) algorithm is used. This scheme is a Reduced Order Kalman Filter using a 3D multivariate modal decomposition of the forecast error covariance. The OSSEs enabled us to show the positive impact of SSS assimilation on the Mercator Ocean operational forecasting system. These experiments particularly show the importance to specify appropriated observation errors and the impact of having and/or combining different observing system. Several conclusions can be highlighted such as the importance of the space/time scales consistency between the data products and our ocean prediction systems. This study has to be considered as an important step for assimilation of SSS measured from space. Further studies have to be conducted with other simulated data, other oceanic configurations and other improved assimilation schemes. Article in Journal/Newspaper North Atlantic Unknown Remote Sensing of Environment 112 4 1476 1487 |