Decadal variability of sea surface temperatures off North Iceland over the last 2000 years
International audience Ocean variability at decadal time-scales remains poorly described partly because of the scarcity of high temporal resolution marine records. Here, we present a reconstruction of Sea Surface Temperatures (SSTs) over the past twomillennia at unprecedented temporal resolution (2...
Published in: | Earth and Planetary Science Letters |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2008
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Online Access: | https://insu.hal.science/insu-00311666 https://insu.hal.science/insu-00311666/document https://insu.hal.science/insu-00311666/file/Sicre_et_al_-_2008_-_EPSL.pdf https://doi.org/10.1016/j.epsl.2008.01.011 |
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ftunivorleans:oai:HAL:insu-00311666v1 |
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openpolar |
institution |
Open Polar |
collection |
Université d'Orléans: HAL |
op_collection_id |
ftunivorleans |
language |
English |
topic |
Decadal variability Sea surface temperature North Atlantic Alkenones Medieval Warm Period Little Ice Age Iceland [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
Decadal variability Sea surface temperature North Atlantic Alkenones Medieval Warm Period Little Ice Age Iceland [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Sicre, Marie Alexandrine Jacob, Jérémy Ezat, Ullah Rousse, Sonia Kissel, Catherine Yiou, Pascal Eiríksson, Jon Knudsen, Karen Luise Jansen, Eystein Turon, Jean-Louis Decadal variability of sea surface temperatures off North Iceland over the last 2000 years |
topic_facet |
Decadal variability Sea surface temperature North Atlantic Alkenones Medieval Warm Period Little Ice Age Iceland [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Ocean variability at decadal time-scales remains poorly described partly because of the scarcity of high temporal resolution marine records. Here, we present a reconstruction of Sea Surface Temperatures (SSTs) over the past twomillennia at unprecedented temporal resolution (2 to 5 years), from a marine core located off North Iceland. Alkenone paleothermometry was used to infer SST variability, and tephrochronology to build the age model. Spectral analyses of the SSTsignal indicate intermittent 20–25 year oscillations, with periods of strong and weak power, that are likely reflecting the ocean response to wind forcing, presumably the North Atlantic Oscillation (NAO). Warmer SSTs and paleo-magnetic proxy data, between 1000 and 1350 year A.D., overlapping theMedievalWarm Period (MWP), suggest enhanced heat transport across the Denmark Strait by the North Icelandic IrmingerCurrent (NIIC). This is in contrast with the subsequent period, which includes the Little IceAge (LIA), showing continuous cooling towards the 20th century.Reduced NIIC flow through theDenmark Strait likely resulting from higher freshwater and sea ice export from the Arctic would account for the observed colder conditions. |
author2 |
Paléocéanographie (PALEOCEAN) 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)-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) Institut des Sciences de la Terre d'Orléans (ISTO) Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Climat et Magnétisme (CLIMAG) Extrèmes : Statistiques, Impacts et Régionalisation (ESTIMR) University of Iceland Reykjavik Department of Earth Sciences Aarhus Aarhus University Aarhus Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Departement de Géologie et Océanographie Université Sciences et Technologies - Bordeaux 1 (UB) PACLIVA European Commission 5th Framework Program (Contract EVK2-2002-00143). |
format |
Article in Journal/Newspaper |
author |
Sicre, Marie Alexandrine Jacob, Jérémy Ezat, Ullah Rousse, Sonia Kissel, Catherine Yiou, Pascal Eiríksson, Jon Knudsen, Karen Luise Jansen, Eystein Turon, Jean-Louis |
author_facet |
Sicre, Marie Alexandrine Jacob, Jérémy Ezat, Ullah Rousse, Sonia Kissel, Catherine Yiou, Pascal Eiríksson, Jon Knudsen, Karen Luise Jansen, Eystein Turon, Jean-Louis |
author_sort |
Sicre, Marie Alexandrine |
title |
Decadal variability of sea surface temperatures off North Iceland over the last 2000 years |
title_short |
Decadal variability of sea surface temperatures off North Iceland over the last 2000 years |
title_full |
Decadal variability of sea surface temperatures off North Iceland over the last 2000 years |
title_fullStr |
Decadal variability of sea surface temperatures off North Iceland over the last 2000 years |
title_full_unstemmed |
Decadal variability of sea surface temperatures off North Iceland over the last 2000 years |
title_sort |
decadal variability of sea surface temperatures off north iceland over the last 2000 years |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://insu.hal.science/insu-00311666 https://insu.hal.science/insu-00311666/document https://insu.hal.science/insu-00311666/file/Sicre_et_al_-_2008_-_EPSL.pdf https://doi.org/10.1016/j.epsl.2008.01.011 |
genre |
Arctic Denmark Strait Iceland North Atlantic North Atlantic oscillation Sea ice NIIC |
genre_facet |
Arctic Denmark Strait Iceland North Atlantic North Atlantic oscillation Sea ice NIIC |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://insu.hal.science/insu-00311666 Earth and Planetary Science Letters, 2008, 268, pp.137-142. ⟨10.1016/j.epsl.2008.01.011⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2008.01.011 insu-00311666 https://insu.hal.science/insu-00311666 https://insu.hal.science/insu-00311666/document https://insu.hal.science/insu-00311666/file/Sicre_et_al_-_2008_-_EPSL.pdf doi:10.1016/j.epsl.2008.01.011 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2008.01.011 |
container_title |
Earth and Planetary Science Letters |
container_volume |
268 |
container_issue |
1-2 |
container_start_page |
137 |
op_container_end_page |
142 |
_version_ |
1797578441558589440 |
spelling |
ftunivorleans:oai:HAL:insu-00311666v1 2024-04-28T08:10:41+00:00 Decadal variability of sea surface temperatures off North Iceland over the last 2000 years Sicre, Marie Alexandrine Jacob, Jérémy Ezat, Ullah Rousse, Sonia Kissel, Catherine Yiou, Pascal Eiríksson, Jon Knudsen, Karen Luise Jansen, Eystein Turon, Jean-Louis Paléocéanographie (PALEOCEAN) 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)-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) Institut des Sciences de la Terre d'Orléans (ISTO) Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Climat et Magnétisme (CLIMAG) Extrèmes : Statistiques, Impacts et Régionalisation (ESTIMR) University of Iceland Reykjavik Department of Earth Sciences Aarhus Aarhus University Aarhus Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Departement de Géologie et Océanographie Université Sciences et Technologies - Bordeaux 1 (UB) PACLIVA European Commission 5th Framework Program (Contract EVK2-2002-00143). 2008 https://insu.hal.science/insu-00311666 https://insu.hal.science/insu-00311666/document https://insu.hal.science/insu-00311666/file/Sicre_et_al_-_2008_-_EPSL.pdf https://doi.org/10.1016/j.epsl.2008.01.011 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2008.01.011 insu-00311666 https://insu.hal.science/insu-00311666 https://insu.hal.science/insu-00311666/document https://insu.hal.science/insu-00311666/file/Sicre_et_al_-_2008_-_EPSL.pdf doi:10.1016/j.epsl.2008.01.011 info:eu-repo/semantics/OpenAccess ISSN: 0012-821X Earth and Planetary Science Letters https://insu.hal.science/insu-00311666 Earth and Planetary Science Letters, 2008, 268, pp.137-142. ⟨10.1016/j.epsl.2008.01.011⟩ Decadal variability Sea surface temperature North Atlantic Alkenones Medieval Warm Period Little Ice Age Iceland [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2008 ftunivorleans https://doi.org/10.1016/j.epsl.2008.01.011 2024-04-04T17:02:28Z International audience Ocean variability at decadal time-scales remains poorly described partly because of the scarcity of high temporal resolution marine records. Here, we present a reconstruction of Sea Surface Temperatures (SSTs) over the past twomillennia at unprecedented temporal resolution (2 to 5 years), from a marine core located off North Iceland. Alkenone paleothermometry was used to infer SST variability, and tephrochronology to build the age model. Spectral analyses of the SSTsignal indicate intermittent 20–25 year oscillations, with periods of strong and weak power, that are likely reflecting the ocean response to wind forcing, presumably the North Atlantic Oscillation (NAO). Warmer SSTs and paleo-magnetic proxy data, between 1000 and 1350 year A.D., overlapping theMedievalWarm Period (MWP), suggest enhanced heat transport across the Denmark Strait by the North Icelandic IrmingerCurrent (NIIC). This is in contrast with the subsequent period, which includes the Little IceAge (LIA), showing continuous cooling towards the 20th century.Reduced NIIC flow through theDenmark Strait likely resulting from higher freshwater and sea ice export from the Arctic would account for the observed colder conditions. Article in Journal/Newspaper Arctic Denmark Strait Iceland North Atlantic North Atlantic oscillation Sea ice NIIC Université d'Orléans: HAL Earth and Planetary Science Letters 268 1-2 137 142 |