The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals
International audience The neodymium (Nd) isotopic composition (expressed in epsilon units, ɛNd) of reef framework-forming cold-water corals provides unique measures of water mass provenance and mixing within the Northeast Atlantic today and in the past. A reconstruction of near thermocline water ɛN...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-00627337 https://hal.science/hal-00627337v1/document https://hal.science/hal-00627337v1/file/2011GL048733.pdf https://doi.org/10.1029/2011GL048733 |
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ftuniparissaclay:oai:HAL:hal-00627337v1 2024-10-13T14:08:49+00:00 The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals Montero-Serano, J.C. Frank, N. Colin, Christophe Wienberg, C. Eisele, M. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Géochrononologie Traceurs Archéométrie (GEOTRAC) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Center for Marine Environmental Sciences Bremen (MARUM) Universität Bremen 2011 https://hal.science/hal-00627337 https://hal.science/hal-00627337v1/document https://hal.science/hal-00627337v1/file/2011GL048733.pdf https://doi.org/10.1029/2011GL048733 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2011GL048733 doi:10.1029/2011GL048733 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00627337 Geophysical Research Letters, 2011, 38 (19), pp.L19604. ⟨10.1029/2011GL048733⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2011 ftuniparissaclay https://doi.org/10.1029/2011GL048733 2024-09-26T23:49:48Z International audience The neodymium (Nd) isotopic composition (expressed in epsilon units, ɛNd) of reef framework-forming cold-water corals provides unique measures of water mass provenance and mixing within the Northeast Atlantic today and in the past. A reconstruction of near thermocline water ɛNd from cold-water corals of the Gulf of Cádiz and Porcupine Seabight spanning over the past 300,000 years, now revealed that climate cooling during Marine Isotope Stages (MIS) 7.2 and MIS 8/9 led to a retraction of the mid-depth Subpolar Gyre (mSPG) to the west. Conversely, Northern Hemisphere warming and increasing fresh water fluxes to the northwest (Labrador Sea) favor a stronger eastward extension of the mSPG blocking the northward flow of temperate Atlantic water as observed during the early MIS 1 and the early stage MIS 5.5. These changes are likely the result of large-scale south-north displacement of the westerlies similar to present-day observations that the North Atlantic Oscillation (NAO) is linked with mid-depth ocean circulation. Based on these observations, we hypothesize that further climate warming will also strengthen the mSPG leading to a salt and temperature decrease in the Northeast Atlantic whereas salinity and temperature will increase in the temperate Atlantic. However, the amplitude of such changes on North Atlantic overturning remains to be tested. Article in Journal/Newspaper Labrador Sea North Atlantic North Atlantic oscillation Northeast Atlantic Archives ouvertes de Paris-Saclay Porcupine Seabight ENVELOPE(-13.000,-13.000,50.500,50.500) Geophysical Research Letters 38 19 n/a n/a |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Montero-Serano, J.C. Frank, N. Colin, Christophe Wienberg, C. Eisele, M. The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The neodymium (Nd) isotopic composition (expressed in epsilon units, ɛNd) of reef framework-forming cold-water corals provides unique measures of water mass provenance and mixing within the Northeast Atlantic today and in the past. A reconstruction of near thermocline water ɛNd from cold-water corals of the Gulf of Cádiz and Porcupine Seabight spanning over the past 300,000 years, now revealed that climate cooling during Marine Isotope Stages (MIS) 7.2 and MIS 8/9 led to a retraction of the mid-depth Subpolar Gyre (mSPG) to the west. Conversely, Northern Hemisphere warming and increasing fresh water fluxes to the northwest (Labrador Sea) favor a stronger eastward extension of the mSPG blocking the northward flow of temperate Atlantic water as observed during the early MIS 1 and the early stage MIS 5.5. These changes are likely the result of large-scale south-north displacement of the westerlies similar to present-day observations that the North Atlantic Oscillation (NAO) is linked with mid-depth ocean circulation. Based on these observations, we hypothesize that further climate warming will also strengthen the mSPG leading to a salt and temperature decrease in the Northeast Atlantic whereas salinity and temperature will increase in the temperate Atlantic. However, the amplitude of such changes on North Atlantic overturning remains to be tested. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Géochrononologie Traceurs Archéométrie (GEOTRAC) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Center for Marine Environmental Sciences Bremen (MARUM) Universität Bremen |
format |
Article in Journal/Newspaper |
author |
Montero-Serano, J.C. Frank, N. Colin, Christophe Wienberg, C. Eisele, M. |
author_facet |
Montero-Serano, J.C. Frank, N. Colin, Christophe Wienberg, C. Eisele, M. |
author_sort |
Montero-Serano, J.C. |
title |
The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals |
title_short |
The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals |
title_full |
The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals |
title_fullStr |
The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals |
title_full_unstemmed |
The climate influence on the mid-depth Northeast Atlantic gyres viewed by cold-water corals |
title_sort |
climate influence on the mid-depth northeast atlantic gyres viewed by cold-water corals |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00627337 https://hal.science/hal-00627337v1/document https://hal.science/hal-00627337v1/file/2011GL048733.pdf https://doi.org/10.1029/2011GL048733 |
long_lat |
ENVELOPE(-13.000,-13.000,50.500,50.500) |
geographic |
Porcupine Seabight |
geographic_facet |
Porcupine Seabight |
genre |
Labrador Sea North Atlantic North Atlantic oscillation Northeast Atlantic |
genre_facet |
Labrador Sea North Atlantic North Atlantic oscillation Northeast Atlantic |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00627337 Geophysical Research Letters, 2011, 38 (19), pp.L19604. ⟨10.1029/2011GL048733⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2011GL048733 doi:10.1029/2011GL048733 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2011GL048733 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
19 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1812815592199028736 |