Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model
International audience Maximum covariance analysis of a preindustrial control simulation of the NCAR Community Climate System Model, version 4 (CCSM4), shows that a barotropic signal in winter broadly resembling a negative phase of the North Atlantic Oscillation (NAO) follows an intensification of t...
Published in: | Journal of Climate |
---|---|
Main Authors: | , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-01332197 https://hal.sorbonne-universite.fr/hal-01332197/document https://hal.sorbonne-universite.fr/hal-01332197/file/frankignoul2015.pdf https://doi.org/10.1175/JCLI-D-15-0007.1 |
id |
ftuniparissaclay:oai:HAL:hal-01332197v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
Climate variability North Atlantic Oscillation Climate models Meridional overturning circulation [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Climate variability North Atlantic Oscillation Climate models Meridional overturning circulation [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Frankignoul, Claude Gastineau, Guillaume Kwon, Young-Oh Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model |
topic_facet |
Climate variability North Atlantic Oscillation Climate models Meridional overturning circulation [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Maximum covariance analysis of a preindustrial control simulation of the NCAR Community Climate System Model, version 4 (CCSM4), shows that a barotropic signal in winter broadly resembling a negative phase of the North Atlantic Oscillation (NAO) follows an intensification of the Atlantic meridional overturning circulation (AMOC) by about 7 yr. The delay is due to the cyclonic propagation along the North Atlantic Current (NAC) and the subpolar gyre of a SST warming linked to a northward shift and in-tensification of the NAC, together with an increasing SST cooling linked to increasing southward advection of subpolar water along the western boundary and a southward shift of the Gulf Stream (GS). These changes result in a meridional SST dipole, which follows the AMOC intensification after 6 or 7 yr. The SST changes were initiated by the strengthening of the western subpolar gyre and by bottom torque at the crossover of the deep branches of the AMOC with the NAC on the western flank of the Mid-Atlantic Ridge and the GS near the Tail of the Grand Banks, respectively. The heat flux damping of the SST dipole shifts the region of maximum atmospheric transient eddy growth southward, leading to a negative NAO-like response. No significant atmospheric response is found to the Atlantic multidecadal oscillation (AMO), which is broadly realistic but shifted south and associated with a much weaker meridional SST gradient than the AMOC fingerprint. Nonetheless, the wintertime atmospheric response to the AMOC shows some similarity with the observed response to the AMO, suggesting that the ocean–atmosphere interactions are broadly realistic in CCSM4. |
author2 |
Processus de la variabilité climatique tropicale et impacts (PARVATI) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Woods Hole Oceanographic Institution (WHOI) ANR-10-LABX-0018,L-IPSL,LabEx Institut Pierre Simon Laplace (IPSL): Understand climate and anticipate future changes(2010) European Project: 308299,EC:FP7:ENV,FP7-ENV-2012-two-stage,NACLIM(2012) European Project: 312979,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2012-1,IS-ENES2(2013) |
format |
Article in Journal/Newspaper |
author |
Frankignoul, Claude Gastineau, Guillaume Kwon, Young-Oh |
author_facet |
Frankignoul, Claude Gastineau, Guillaume Kwon, Young-Oh |
author_sort |
Frankignoul, Claude |
title |
Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model |
title_short |
Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model |
title_full |
Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model |
title_fullStr |
Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model |
title_full_unstemmed |
Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model |
title_sort |
wintertime atmospheric response to north atlantic ocean circulation variability in a climate model |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.sorbonne-universite.fr/hal-01332197 https://hal.sorbonne-universite.fr/hal-01332197/document https://hal.sorbonne-universite.fr/hal-01332197/file/frankignoul2015.pdf https://doi.org/10.1175/JCLI-D-15-0007.1 |
genre |
Arctic north atlantic current North Atlantic North Atlantic oscillation |
genre_facet |
Arctic north atlantic current North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.sorbonne-universite.fr/hal-01332197 Journal of Climate, 2015, 28 (19), pp.7659-7677. ⟨10.1175/JCLI-D-15-0007.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/JCLI-D-15-0007.1 info:eu-repo/grantAgreement/EC/FP7/308299/EU/North Atlantic Climate: Predictability of the climate in the North Atlantic/European sector related to North Atlantic/Arctic sea surface temperature and sea ice variability and change/NACLIM info:eu-repo/grantAgreement/EC/FP7/312979/EU/Infrastructure for the European Network for Earth System modelling - Phase 2/IS-ENES2 hal-01332197 https://hal.sorbonne-universite.fr/hal-01332197 https://hal.sorbonne-universite.fr/hal-01332197/document https://hal.sorbonne-universite.fr/hal-01332197/file/frankignoul2015.pdf doi:10.1175/JCLI-D-15-0007.1 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JCLI-D-15-0007.1 |
container_title |
Journal of Climate |
container_volume |
28 |
container_issue |
19 |
container_start_page |
7659 |
op_container_end_page |
7677 |
_version_ |
1799471631582625792 |
spelling |
ftuniparissaclay:oai:HAL:hal-01332197v1 2024-05-19T07:33:32+00:00 Wintertime Atmospheric Response to North Atlantic Ocean Circulation Variability in a Climate Model Frankignoul, Claude Gastineau, Guillaume Kwon, Young-Oh Processus de la variabilité climatique tropicale et impacts (PARVATI) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Woods Hole Oceanographic Institution (WHOI) ANR-10-LABX-0018,L-IPSL,LabEx Institut Pierre Simon Laplace (IPSL): Understand climate and anticipate future changes(2010) European Project: 308299,EC:FP7:ENV,FP7-ENV-2012-two-stage,NACLIM(2012) European Project: 312979,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2012-1,IS-ENES2(2013) 2015 https://hal.sorbonne-universite.fr/hal-01332197 https://hal.sorbonne-universite.fr/hal-01332197/document https://hal.sorbonne-universite.fr/hal-01332197/file/frankignoul2015.pdf https://doi.org/10.1175/JCLI-D-15-0007.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JCLI-D-15-0007.1 info:eu-repo/grantAgreement/EC/FP7/308299/EU/North Atlantic Climate: Predictability of the climate in the North Atlantic/European sector related to North Atlantic/Arctic sea surface temperature and sea ice variability and change/NACLIM info:eu-repo/grantAgreement/EC/FP7/312979/EU/Infrastructure for the European Network for Earth System modelling - Phase 2/IS-ENES2 hal-01332197 https://hal.sorbonne-universite.fr/hal-01332197 https://hal.sorbonne-universite.fr/hal-01332197/document https://hal.sorbonne-universite.fr/hal-01332197/file/frankignoul2015.pdf doi:10.1175/JCLI-D-15-0007.1 info:eu-repo/semantics/OpenAccess ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.sorbonne-universite.fr/hal-01332197 Journal of Climate, 2015, 28 (19), pp.7659-7677. ⟨10.1175/JCLI-D-15-0007.1⟩ Climate variability North Atlantic Oscillation Climate models Meridional overturning circulation [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2015 ftuniparissaclay https://doi.org/10.1175/JCLI-D-15-0007.1 2024-04-22T17:46:14Z International audience Maximum covariance analysis of a preindustrial control simulation of the NCAR Community Climate System Model, version 4 (CCSM4), shows that a barotropic signal in winter broadly resembling a negative phase of the North Atlantic Oscillation (NAO) follows an intensification of the Atlantic meridional overturning circulation (AMOC) by about 7 yr. The delay is due to the cyclonic propagation along the North Atlantic Current (NAC) and the subpolar gyre of a SST warming linked to a northward shift and in-tensification of the NAC, together with an increasing SST cooling linked to increasing southward advection of subpolar water along the western boundary and a southward shift of the Gulf Stream (GS). These changes result in a meridional SST dipole, which follows the AMOC intensification after 6 or 7 yr. The SST changes were initiated by the strengthening of the western subpolar gyre and by bottom torque at the crossover of the deep branches of the AMOC with the NAC on the western flank of the Mid-Atlantic Ridge and the GS near the Tail of the Grand Banks, respectively. The heat flux damping of the SST dipole shifts the region of maximum atmospheric transient eddy growth southward, leading to a negative NAO-like response. No significant atmospheric response is found to the Atlantic multidecadal oscillation (AMO), which is broadly realistic but shifted south and associated with a much weaker meridional SST gradient than the AMOC fingerprint. Nonetheless, the wintertime atmospheric response to the AMOC shows some similarity with the observed response to the AMO, suggesting that the ocean–atmosphere interactions are broadly realistic in CCSM4. Article in Journal/Newspaper Arctic north atlantic current North Atlantic North Atlantic oscillation Archives ouvertes de Paris-Saclay Journal of Climate 28 19 7659 7677 |