Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003
International audience A set of Argo profiles collected in the North Atlantic between May 2002 and April 2003 is combined with a low-resolution general circulation model (GCM) using the adjoint method. Fitting the real hydrographic observations leads to vast improvements in the model circulation, in...
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Online Access: | https://hal.archives-ouvertes.fr/hal-00267355 https://doi.org/10.1016/j.ocemod.2007.06.002 |
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ftccsdartic:oai:HAL:hal-00267355v1 2023-05-15T17:29:31+02:00 Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003 Forget, Gaël Mercier, Herlé Ferron, Bruno Department of Earth, Atmospheric and Planetary Sciences MIT, Cambridge (EAPS) Massachusetts Institute of Technology (MIT) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2007-06-28 https://hal.archives-ouvertes.fr/hal-00267355 https://doi.org/10.1016/j.ocemod.2007.06.002 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ocemod.2007.06.002 hal-00267355 https://hal.archives-ouvertes.fr/hal-00267355 doi:10.1016/j.ocemod.2007.06.002 ISSN: 1463-5003 Ocean Modelling https://hal.archives-ouvertes.fr/hal-00267355 Ocean Modelling, Elsevier, 2007, 20 (1), pp.17-34. ⟨10.1016/j.ocemod.2007.06.002⟩ Data assimilation 4DVAR In situ observations Argo General circulation model [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2007 ftccsdartic https://doi.org/10.1016/j.ocemod.2007.06.002 2021-10-17T02:10:59Z International audience A set of Argo profiles collected in the North Atlantic between May 2002 and April 2003 is combined with a low-resolution general circulation model (GCM) using the adjoint method. Fitting the real hydrographic observations leads to vast improvements in the model circulation, including the sea surface height and the meridional heat transport. We find striking differences in basin-scale transports compared with previous assimilation experiments that use the same GCM and a similar spatial resolution. Based on forward modeling studies, it is argued that these differences are due to different assimilation experiment durations. Over 1 year, the hydrography interpolated with the GCM from Argo profiles better represents the contemporary structures than does a long-term averaged climatology. The GCM dynamics are robust enough to distinguish between contemporary hydrography and climatological hydrography. Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Ocean Modelling 20 1 17 34 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Data assimilation 4DVAR In situ observations Argo General circulation model [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Data assimilation 4DVAR In situ observations Argo General circulation model [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Forget, Gaël Mercier, Herlé Ferron, Bruno Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003 |
topic_facet |
Data assimilation 4DVAR In situ observations Argo General circulation model [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience A set of Argo profiles collected in the North Atlantic between May 2002 and April 2003 is combined with a low-resolution general circulation model (GCM) using the adjoint method. Fitting the real hydrographic observations leads to vast improvements in the model circulation, including the sea surface height and the meridional heat transport. We find striking differences in basin-scale transports compared with previous assimilation experiments that use the same GCM and a similar spatial resolution. Based on forward modeling studies, it is argued that these differences are due to different assimilation experiment durations. Over 1 year, the hydrography interpolated with the GCM from Argo profiles better represents the contemporary structures than does a long-term averaged climatology. The GCM dynamics are robust enough to distinguish between contemporary hydrography and climatological hydrography. |
author2 |
Department of Earth, Atmospheric and Planetary Sciences MIT, Cambridge (EAPS) Massachusetts Institute of Technology (MIT) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Forget, Gaël Mercier, Herlé Ferron, Bruno |
author_facet |
Forget, Gaël Mercier, Herlé Ferron, Bruno |
author_sort |
Forget, Gaël |
title |
Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003 |
title_short |
Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003 |
title_full |
Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003 |
title_fullStr |
Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003 |
title_full_unstemmed |
Combining Argo profiles with a general circulation model in the North Atlantic. Part 2: Realistic transports and improved hydrography, between spring 2002 and spring 2003 |
title_sort |
combining argo profiles with a general circulation model in the north atlantic. part 2: realistic transports and improved hydrography, between spring 2002 and spring 2003 |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00267355 https://doi.org/10.1016/j.ocemod.2007.06.002 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1463-5003 Ocean Modelling https://hal.archives-ouvertes.fr/hal-00267355 Ocean Modelling, Elsevier, 2007, 20 (1), pp.17-34. ⟨10.1016/j.ocemod.2007.06.002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ocemod.2007.06.002 hal-00267355 https://hal.archives-ouvertes.fr/hal-00267355 doi:10.1016/j.ocemod.2007.06.002 |
op_doi |
https://doi.org/10.1016/j.ocemod.2007.06.002 |
container_title |
Ocean Modelling |
container_volume |
20 |
container_issue |
1 |
container_start_page |
17 |
op_container_end_page |
34 |
_version_ |
1766123651974823936 |