Precessional forcing of productivity in the North Atlantic Ocean
International audience The sedimentary C37 alkenone fluxes in core SU90/08 situated in the North Atlantic (43øN) showed that export productivity related to some Haptophyta was driven by precession (1/23 kyr-•) in the last 260 kyr during the glacial periods. In the interglacial stages these alkenones...
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ftunivnantes:oai:HAL:hal-02958592v1 2023-05-15T17:28:04+02:00 Precessional forcing of productivity in the North Atlantic Ocean Villanueva, Joan Grimalt, Joan Labeyrie, Laurent Cortijo, Elsa Vidal, Laurence Louis-Turon, Jean Institut de Ciencies de l'Espai Barcelona (ICE-CSIC) Consejo Superior de Investigaciones Científicas Madrid (CSIC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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-Saclay-Centre National de la Recherche Scientifique (CNRS) Paléocéanographie (PALEOCEAN) 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-Saclay-Centre National de la Recherche Scientifique (CNRS)-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-Saclay-Centre National de la Recherche Scientifique (CNRS) Département de Géologie et d'Océanographie Talence (DGO) Université Sciences et Technologies - Bordeaux 1 (UB) 1998-12 https://hal.science/hal-02958592 https://hal.science/hal-02958592/document https://hal.science/hal-02958592/file/98PA02318.pdf https://doi.org/10.1029/98PA02318 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/98PA02318 hal-02958592 https://hal.science/hal-02958592 https://hal.science/hal-02958592/document https://hal.science/hal-02958592/file/98PA02318.pdf doi:10.1029/98PA02318 info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://hal.science/hal-02958592 Paleoceanography, 1998, 13 (6), pp.561-571. ⟨10.1029/98PA02318⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 1998 ftunivnantes https://doi.org/10.1029/98PA02318 2023-02-08T05:21:12Z International audience The sedimentary C37 alkenone fluxes in core SU90/08 situated in the North Atlantic (43øN) showed that export productivity related to some Haptophyta was driven by precession (1/23 kyr-•) in the last 260 kyr during the glacial periods. In the interglacial stages these alkenones were strongly depleted. This different behaviour is attributed to the displacement of Ekman pumping to lower latitudes and to thermocline stability decreases in the glacial periods. The alkenones were coherent and nearly phased with boreal winter insolation, suggesting a link between productivity and the strength of the westerlies. They were also coherent with the precessionally driven nutriocline minima and winter sea surface temperature in the equatorial Atlantic Ocean. The combination of the measurements at these different latitudes point to a strong coupling in the dynamics of the Hadley and Ferrel cells and to a dominant North Atlantic modulation of marine productivity to precession during the glacial stages. Article in Journal/Newspaper North Atlantic Université de Nantes: HAL-UNIV-NANTES Paleoceanography 13 6 561 571 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Villanueva, Joan Grimalt, Joan Labeyrie, Laurent Cortijo, Elsa Vidal, Laurence Louis-Turon, Jean Precessional forcing of productivity in the North Atlantic Ocean |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The sedimentary C37 alkenone fluxes in core SU90/08 situated in the North Atlantic (43øN) showed that export productivity related to some Haptophyta was driven by precession (1/23 kyr-•) in the last 260 kyr during the glacial periods. In the interglacial stages these alkenones were strongly depleted. This different behaviour is attributed to the displacement of Ekman pumping to lower latitudes and to thermocline stability decreases in the glacial periods. The alkenones were coherent and nearly phased with boreal winter insolation, suggesting a link between productivity and the strength of the westerlies. They were also coherent with the precessionally driven nutriocline minima and winter sea surface temperature in the equatorial Atlantic Ocean. The combination of the measurements at these different latitudes point to a strong coupling in the dynamics of the Hadley and Ferrel cells and to a dominant North Atlantic modulation of marine productivity to precession during the glacial stages. |
author2 |
Institut de Ciencies de l'Espai Barcelona (ICE-CSIC) Consejo Superior de Investigaciones Científicas Madrid (CSIC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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-Saclay-Centre National de la Recherche Scientifique (CNRS) Paléocéanographie (PALEOCEAN) 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-Saclay-Centre National de la Recherche Scientifique (CNRS)-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-Saclay-Centre National de la Recherche Scientifique (CNRS) Département de Géologie et d'Océanographie Talence (DGO) Université Sciences et Technologies - Bordeaux 1 (UB) |
format |
Article in Journal/Newspaper |
author |
Villanueva, Joan Grimalt, Joan Labeyrie, Laurent Cortijo, Elsa Vidal, Laurence Louis-Turon, Jean |
author_facet |
Villanueva, Joan Grimalt, Joan Labeyrie, Laurent Cortijo, Elsa Vidal, Laurence Louis-Turon, Jean |
author_sort |
Villanueva, Joan |
title |
Precessional forcing of productivity in the North Atlantic Ocean |
title_short |
Precessional forcing of productivity in the North Atlantic Ocean |
title_full |
Precessional forcing of productivity in the North Atlantic Ocean |
title_fullStr |
Precessional forcing of productivity in the North Atlantic Ocean |
title_full_unstemmed |
Precessional forcing of productivity in the North Atlantic Ocean |
title_sort |
precessional forcing of productivity in the north atlantic ocean |
publisher |
HAL CCSD |
publishDate |
1998 |
url |
https://hal.science/hal-02958592 https://hal.science/hal-02958592/document https://hal.science/hal-02958592/file/98PA02318.pdf https://doi.org/10.1029/98PA02318 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0883-8305 Paleoceanography https://hal.science/hal-02958592 Paleoceanography, 1998, 13 (6), pp.561-571. ⟨10.1029/98PA02318⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/98PA02318 hal-02958592 https://hal.science/hal-02958592 https://hal.science/hal-02958592/document https://hal.science/hal-02958592/file/98PA02318.pdf doi:10.1029/98PA02318 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/98PA02318 |
container_title |
Paleoceanography |
container_volume |
13 |
container_issue |
6 |
container_start_page |
561 |
op_container_end_page |
571 |
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1766120526037647360 |