A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland
International audience Marine paleo-records acquired at high temporal resolution provide critical data for testing numerical climate models and help to understand processes underlying ocean variability. This study presents a unique 4500-year reconstruction of sea surface temperature (SST) obtained f...
Published in: | Quaternary Science Reviews |
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Language: | English |
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Online Access: | https://hal.science/hal-03427305 https://hal.science/hal-03427305/document https://hal.science/hal-03427305/file/Sicre_et_al_QSR.pdf https://doi.org/10.1016/j.quascirev.2008.08.009 |
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ftceafr:oai:HAL:hal-03427305v1 2024-09-15T18:13:21+00:00 A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland Sicre, Marie-Alexandrine Ezat, Ullah Guimbaut, Elwrick Dahhaoui, Imane Yiou, Pascal Eiríksson, Jón Knudsen, Karen-Luise Jansen, Eystein Turon, Jean-Louis 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) University of Iceland Reykjavik Aarhus University Aarhus Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Département de Géologie et d'Océanographie Talence (DGO) Université Sciences et Technologies - Bordeaux 1 (UB) 2008 https://hal.science/hal-03427305 https://hal.science/hal-03427305/document https://hal.science/hal-03427305/file/Sicre_et_al_QSR.pdf https://doi.org/10.1016/j.quascirev.2008.08.009 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2008.08.009 hal-03427305 https://hal.science/hal-03427305 https://hal.science/hal-03427305/document https://hal.science/hal-03427305/file/Sicre_et_al_QSR.pdf doi:10.1016/j.quascirev.2008.08.009 info:eu-repo/semantics/OpenAccess ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://hal.science/hal-03427305 Quaternary Science Reviews, 2008, 27 (21-22), pp.2041-2047. ⟨10.1016/j.quascirev.2008.08.009⟩ North Atlantic Multidecadal variability Meridional Overturning Circulation Alkenone [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 2008 ftceafr https://doi.org/10.1016/j.quascirev.2008.08.009 2024-07-22T13:13:45Z International audience Marine paleo-records acquired at high temporal resolution provide critical data for testing numerical climate models and help to understand processes underlying ocean variability. This study presents a unique 4500-year reconstruction of sea surface temperature (SST) obtained from alkenones in the North Atlantic Polar Front area off North Iceland, at an average temporal resolution of 4–5 years. Spectral analysis of this signal shows dominant multidecadal oscillations which occurred with a stronger amplitude between 2500 and 4200 years BP, hand in hand with fluctuations of bottom currents indicated by paleomagnetic proxies. Contemporaneous large excursions of the Inter-tropical Convergence Zone (ITCZ) are also recorded by the distant Cariaco titanium time series, suggesting a link with low latitude Atlantic climate. We speculate that the oscillations reflect changes of the Meridional Overturning Circulation (MOC) induced by increased ENSO activity Article in Journal/Newspaper Iceland North Atlantic HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Quaternary Science Reviews 27 21-22 2041 2047 |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
North Atlantic Multidecadal variability Meridional Overturning Circulation Alkenone [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
North Atlantic Multidecadal variability Meridional Overturning Circulation Alkenone [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Sicre, Marie-Alexandrine Ezat, Ullah Guimbaut, Elwrick Dahhaoui, Imane Yiou, Pascal Eiríksson, Jón Knudsen, Karen-Luise Jansen, Eystein Turon, Jean-Louis A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland |
topic_facet |
North Atlantic Multidecadal variability Meridional Overturning Circulation Alkenone [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Marine paleo-records acquired at high temporal resolution provide critical data for testing numerical climate models and help to understand processes underlying ocean variability. This study presents a unique 4500-year reconstruction of sea surface temperature (SST) obtained from alkenones in the North Atlantic Polar Front area off North Iceland, at an average temporal resolution of 4–5 years. Spectral analysis of this signal shows dominant multidecadal oscillations which occurred with a stronger amplitude between 2500 and 4200 years BP, hand in hand with fluctuations of bottom currents indicated by paleomagnetic proxies. Contemporaneous large excursions of the Inter-tropical Convergence Zone (ITCZ) are also recorded by the distant Cariaco titanium time series, suggesting a link with low latitude Atlantic climate. We speculate that the oscillations reflect changes of the Meridional Overturning Circulation (MOC) induced by increased ENSO activity |
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) University of Iceland Reykjavik Aarhus University Aarhus Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Département de Géologie et d'Océanographie Talence (DGO) Université Sciences et Technologies - Bordeaux 1 (UB) |
format |
Article in Journal/Newspaper |
author |
Sicre, Marie-Alexandrine Ezat, Ullah Guimbaut, Elwrick Dahhaoui, Imane Yiou, Pascal Eiríksson, Jón Knudsen, Karen-Luise Jansen, Eystein Turon, Jean-Louis |
author_facet |
Sicre, Marie-Alexandrine Ezat, Ullah Guimbaut, Elwrick Dahhaoui, Imane Yiou, Pascal Eiríksson, Jón Knudsen, Karen-Luise Jansen, Eystein Turon, Jean-Louis |
author_sort |
Sicre, Marie-Alexandrine |
title |
A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland |
title_short |
A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland |
title_full |
A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland |
title_fullStr |
A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland |
title_full_unstemmed |
A 4500-year reconstruction of sea surface temperature variability at decadal time-scales off North Iceland |
title_sort |
4500-year reconstruction of sea surface temperature variability at decadal time-scales off north iceland |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-03427305 https://hal.science/hal-03427305/document https://hal.science/hal-03427305/file/Sicre_et_al_QSR.pdf https://doi.org/10.1016/j.quascirev.2008.08.009 |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://hal.science/hal-03427305 Quaternary Science Reviews, 2008, 27 (21-22), pp.2041-2047. ⟨10.1016/j.quascirev.2008.08.009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2008.08.009 hal-03427305 https://hal.science/hal-03427305 https://hal.science/hal-03427305/document https://hal.science/hal-03427305/file/Sicre_et_al_QSR.pdf doi:10.1016/j.quascirev.2008.08.009 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2008.08.009 |
container_title |
Quaternary Science Reviews |
container_volume |
27 |
container_issue |
21-22 |
container_start_page |
2041 |
op_container_end_page |
2047 |
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1810451119187427328 |