Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment.
International audience The thermohaline circulation (THC) is a large scale oceanic circulation driven by density gradients. Its Atlantic component is responsible for a significant part of the northward heat transport of the climate system (Broecker, 1991; Lavin et al., 2003), roughly 1PW over the 6P...
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ftccsdartic:oai:HAL:meteo-00187192v1 2023-05-15T17:36:54+02:00 Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment. Guemas, Virginie Salas Y Melia, David Groupe d'étude de l'atmosphère météorologique (CNRM-GAME) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) 2008-07 https://hal-meteofrance.archives-ouvertes.fr/meteo-00187192 https://doi.org/10.1007/s00382-007-0336-8 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-007-0336-8 meteo-00187192 https://hal-meteofrance.archives-ouvertes.fr/meteo-00187192 doi:10.1007/s00382-007-0336-8 ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal-meteofrance.archives-ouvertes.fr/meteo-00187192 Climate Dynamics, Springer Verlag, 2008, 31 (1), pp.29-48. ⟨10.1007/s00382-007-0336-8⟩ Thermohaline circulation deep ocean convection sea ice coupled mode of variability global coupled model [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2008 ftccsdartic https://doi.org/10.1007/s00382-007-0336-8 2021-12-19T04:17:12Z International audience The thermohaline circulation (THC) is a large scale oceanic circulation driven by density gradients. Its Atlantic component is responsible for a significant part of the northward heat transport of the climate system (Broecker, 1991; Lavin et al., 2003), roughly 1PW over the 6PW total energy transported by the entire system (Ganachaud and Wunsch, 2000, 2003; Trenberth and Caron, 2001). Although some results question the impact of THC on climate (Seager et al., 2002), a number of studies showed that its variability can cause large changes in regional surface temperatures and precipitation (Manabe and Stouffer, 1999, 2000; Dong and Sutton, 2002; Vellinga and Wood, 2002; Swingedouw et al., 2006). It is thought to interact with the main atmospheric modes of variability, namely the El Niño Southern Oscillation (ENSO, Dong and Sutton, 2002) and the North Atlantic Oscillation (NAO, Wu and Gordon, 2002). Some variations in its strength may have played an important role in paleoclimate fluctuations (Clark et al., 2002; Rahmstorf, 2002). Shaffrey and Sutton (2006) have also suggested, following Bjerknes' hypothesis (1964), that on decadal timescales, an increase in THC heat transport in the northern extratropics (20°N-70°N latitude band) is compensated by a decrease in midlatitude heat and moisture transport by the storm tracks and vice-versa. When the ocean heat transport rises, the induced decrease in the equator-to-pole temperature gradient weakens the atmospheric baroclinicity which causes a reduction in the atmospheric transient energy transport. Given this potential climatic role of the THC, there is an obvious need to better understand this component of the climate system. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Sea ice Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Caron ENVELOPE(-80.766,-80.766,51.333,51.333) Climate Dynamics 31 1 29 48 |
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 |
Thermohaline circulation deep ocean convection sea ice coupled mode of variability global coupled model [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Thermohaline circulation deep ocean convection sea ice coupled mode of variability global coupled model [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Guemas, Virginie Salas Y Melia, David Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment. |
topic_facet |
Thermohaline circulation deep ocean convection sea ice coupled mode of variability global coupled model [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The thermohaline circulation (THC) is a large scale oceanic circulation driven by density gradients. Its Atlantic component is responsible for a significant part of the northward heat transport of the climate system (Broecker, 1991; Lavin et al., 2003), roughly 1PW over the 6PW total energy transported by the entire system (Ganachaud and Wunsch, 2000, 2003; Trenberth and Caron, 2001). Although some results question the impact of THC on climate (Seager et al., 2002), a number of studies showed that its variability can cause large changes in regional surface temperatures and precipitation (Manabe and Stouffer, 1999, 2000; Dong and Sutton, 2002; Vellinga and Wood, 2002; Swingedouw et al., 2006). It is thought to interact with the main atmospheric modes of variability, namely the El Niño Southern Oscillation (ENSO, Dong and Sutton, 2002) and the North Atlantic Oscillation (NAO, Wu and Gordon, 2002). Some variations in its strength may have played an important role in paleoclimate fluctuations (Clark et al., 2002; Rahmstorf, 2002). Shaffrey and Sutton (2006) have also suggested, following Bjerknes' hypothesis (1964), that on decadal timescales, an increase in THC heat transport in the northern extratropics (20°N-70°N latitude band) is compensated by a decrease in midlatitude heat and moisture transport by the storm tracks and vice-versa. When the ocean heat transport rises, the induced decrease in the equator-to-pole temperature gradient weakens the atmospheric baroclinicity which causes a reduction in the atmospheric transient energy transport. Given this potential climatic role of the THC, there is an obvious need to better understand this component of the climate system. |
author2 |
Groupe d'étude de l'atmosphère météorologique (CNRM-GAME) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) |
format |
Article in Journal/Newspaper |
author |
Guemas, Virginie Salas Y Melia, David |
author_facet |
Guemas, Virginie Salas Y Melia, David |
author_sort |
Guemas, Virginie |
title |
Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment. |
title_short |
Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment. |
title_full |
Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment. |
title_fullStr |
Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment. |
title_full_unstemmed |
Simulation of the Atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. Part I: a mechanism governing the variability of ocean convection in a preindustrial experiment. |
title_sort |
simulation of the atlantic meridional overturning circulation in an atmosphere-ocean global coupled model. part i: a mechanism governing the variability of ocean convection in a preindustrial experiment. |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal-meteofrance.archives-ouvertes.fr/meteo-00187192 https://doi.org/10.1007/s00382-007-0336-8 |
long_lat |
ENVELOPE(-80.766,-80.766,51.333,51.333) |
geographic |
Caron |
geographic_facet |
Caron |
genre |
North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
North Atlantic North Atlantic oscillation Sea ice |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal-meteofrance.archives-ouvertes.fr/meteo-00187192 Climate Dynamics, Springer Verlag, 2008, 31 (1), pp.29-48. ⟨10.1007/s00382-007-0336-8⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-007-0336-8 meteo-00187192 https://hal-meteofrance.archives-ouvertes.fr/meteo-00187192 doi:10.1007/s00382-007-0336-8 |
op_doi |
https://doi.org/10.1007/s00382-007-0336-8 |
container_title |
Climate Dynamics |
container_volume |
31 |
container_issue |
1 |
container_start_page |
29 |
op_container_end_page |
48 |
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1766136553090842624 |