Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection.
International audience The recent major production of anomalously warm, salty deep water in the northwestern Mediterranean Sea (winters 2004–2005 and 2005–2006) is linked to extreme winter air-sea heat and freshwater forcing of the basin. Fields of heat and density fluxes are determined both from th...
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ftinsu:oai:HAL:insu-00562614v1 2024-02-11T10:06:33+01:00 Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection. Schroeder, Katrin Josey, S. A. Herrmann, Marine Grignon, Laure Gasparini, G. P. Bryden, H. L. Istituto di Scienze Marine La Spezia (CNR-ISMAR-SP) Istituto di Science Marine (ISMAR ) National Research Council of Italy National Oceanography Centre Southampton (NOC) University of Southampton 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) CNR Istituto per lo studio dell'Oceanografia Fisica 2010-08-27 https://insu.hal.science/insu-00562614 https://insu.hal.science/insu-00562614/document https://insu.hal.science/insu-00562614/file/2009JC005749.pdf https://doi.org/10.1029/2009JC005749 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2009JC005749 insu-00562614 https://insu.hal.science/insu-00562614 https://insu.hal.science/insu-00562614/document https://insu.hal.science/insu-00562614/file/2009JC005749.pdf doi:10.1029/2009JC005749 info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-00562614 Journal of Geophysical Research. Oceans, 2010, 115 (C08029), pp.18. ⟨10.1029/2009JC005749⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2010 ftinsu https://doi.org/10.1029/2009JC005749 2024-01-17T17:26:50Z International audience The recent major production of anomalously warm, salty deep water in the northwestern Mediterranean Sea (winters 2004–2005 and 2005–2006) is linked to extreme winter air-sea heat and freshwater forcing of the basin. Fields of heat and density fluxes are determined both from the National Centers for Environmental Prediction-National Center for Atmospheric Research reanalysis and a daily high-resolution downscaling of the European Centre for Medium-Range Weather Forecasts reanalysis and analysis data set ARPERA. In the deep water formation region, during winter 2004–2005, the net heat loss exceeds 300 W m−2 compared with typical values of 200 W m−2. The relationship between the deep water formation episodes and large-scale atmospheric patterns is investigated and found to be more closely related to the East Atlantic Pattern than the North Atlantic Oscillation. The contributions of atmospheric forcing and lateral advection of anomalously warm, salty water to the convection region are discussed in order to determine their relative roles in causing massive renewal of Western Mediterranean Deep Water and its anomalous properties. The main result shows that the net evaporation during winter 2004–2005, even if very high compared to the climatology, could have induced only 49% of the actual observed increase in the salt content of the deep layer. Thus, lateral advection played a major role in setting the new deep water properties. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Institut national des sciences de l'Univers: HAL-INSU Journal of Geophysical Research 115 C8 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Schroeder, Katrin Josey, S. A. Herrmann, Marine Grignon, Laure Gasparini, G. P. Bryden, H. L. Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection. |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The recent major production of anomalously warm, salty deep water in the northwestern Mediterranean Sea (winters 2004–2005 and 2005–2006) is linked to extreme winter air-sea heat and freshwater forcing of the basin. Fields of heat and density fluxes are determined both from the National Centers for Environmental Prediction-National Center for Atmospheric Research reanalysis and a daily high-resolution downscaling of the European Centre for Medium-Range Weather Forecasts reanalysis and analysis data set ARPERA. In the deep water formation region, during winter 2004–2005, the net heat loss exceeds 300 W m−2 compared with typical values of 200 W m−2. The relationship between the deep water formation episodes and large-scale atmospheric patterns is investigated and found to be more closely related to the East Atlantic Pattern than the North Atlantic Oscillation. The contributions of atmospheric forcing and lateral advection of anomalously warm, salty water to the convection region are discussed in order to determine their relative roles in causing massive renewal of Western Mediterranean Deep Water and its anomalous properties. The main result shows that the net evaporation during winter 2004–2005, even if very high compared to the climatology, could have induced only 49% of the actual observed increase in the salt content of the deep layer. Thus, lateral advection played a major role in setting the new deep water properties. |
author2 |
Istituto di Scienze Marine La Spezia (CNR-ISMAR-SP) Istituto di Science Marine (ISMAR ) National Research Council of Italy National Oceanography Centre Southampton (NOC) University of Southampton 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) CNR Istituto per lo studio dell'Oceanografia Fisica |
format |
Article in Journal/Newspaper |
author |
Schroeder, Katrin Josey, S. A. Herrmann, Marine Grignon, Laure Gasparini, G. P. Bryden, H. L. |
author_facet |
Schroeder, Katrin Josey, S. A. Herrmann, Marine Grignon, Laure Gasparini, G. P. Bryden, H. L. |
author_sort |
Schroeder, Katrin |
title |
Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection. |
title_short |
Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection. |
title_full |
Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection. |
title_fullStr |
Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection. |
title_full_unstemmed |
Abrupt warming and salting of the Western Mediterranean Deep Water: atmospheric forcings and lateral advection. |
title_sort |
abrupt warming and salting of the western mediterranean deep water: atmospheric forcings and lateral advection. |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://insu.hal.science/insu-00562614 https://insu.hal.science/insu-00562614/document https://insu.hal.science/insu-00562614/file/2009JC005749.pdf https://doi.org/10.1029/2009JC005749 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-00562614 Journal of Geophysical Research. Oceans, 2010, 115 (C08029), pp.18. ⟨10.1029/2009JC005749⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2009JC005749 insu-00562614 https://insu.hal.science/insu-00562614 https://insu.hal.science/insu-00562614/document https://insu.hal.science/insu-00562614/file/2009JC005749.pdf doi:10.1029/2009JC005749 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2009JC005749 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
container_issue |
C8 |
_version_ |
1790604346098974720 |