Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index
International audience RI-OH (ring index of hydroxylated tetraethers) has recently been proposed to reconstruct paleotemperatures in middle- to low-latitude marginal seas. However, RI-OH has barely been tested in marginal seas under substantial terrigenous inputs. Here we analyze tetraether lipids i...
Published in: | Paleoceanography and Paleoclimatology |
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Main Authors: | , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Online Access: | https://hal.science/hal-02115659 https://hal.science/hal-02115659/document https://hal.science/hal-02115659/file/2018PA003452.pdf https://doi.org/10.1029/2018PA003452 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
topic |
planktonic-foraminifera surface temperature organic-matter interannual variability intact polar iberian margin climatic variability dialkyl glycerol tetraethers isoprenoid tetraether lipids membrane-lipids glacial-interglacial transitions sea surface temperature western Mediterranean Sea GDGTs TEX86 RI-OH [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
planktonic-foraminifera surface temperature organic-matter interannual variability intact polar iberian margin climatic variability dialkyl glycerol tetraethers isoprenoid tetraether lipids membrane-lipids glacial-interglacial transitions sea surface temperature western Mediterranean Sea GDGTs TEX86 RI-OH [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Davtian, Nina Ménot, Guillemette Fagault, Yoann Bard, Edouard Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index |
topic_facet |
planktonic-foraminifera surface temperature organic-matter interannual variability intact polar iberian margin climatic variability dialkyl glycerol tetraethers isoprenoid tetraether lipids membrane-lipids glacial-interglacial transitions sea surface temperature western Mediterranean Sea GDGTs TEX86 RI-OH [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience RI-OH (ring index of hydroxylated tetraethers) has recently been proposed to reconstruct paleotemperatures in middle- to low-latitude marginal seas. However, RI-OH has barely been tested in marginal seas under substantial terrigenous inputs. Here we analyze tetraether lipids in two adjacent marine cores from the Gulf of Lions. We then test for the first time the RI-OH paleothermometer from 160 to 9 ka BP in the western Mediterranean Sea. While terrigenous inputs prevent TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) from behaving as a paleothermometer, RI-OH is generally consistent with other paleothermometric proxies. RI-OH also responds systematically and coherently to glacial-interglacial transitions as well as to abrupt climatic events. The average difference between RI-OH temperatures and November-May U-37(K') (C-37 ketone unsaturation ratio) temperatures is -2.0 degrees C with a standard error of 0.4 degrees C based on 249 RI-OH-U- 37(K') comparisons. This systematic difference suggests that hydroxylated tetraethers and alkenones record different temperatures, for instance, winter and/or subsurface temperatures for RI-OH. Another source of bias could be linked to the available RI-OH-temperature calibration, which clearly needs more work at the global and regional scales, notably for semienclosed basins such as the Mediterranean Sea. Nevertheless, our RI-OH-based interglacial-glacial anomalies are of 10 degrees C, a value within the high end of anomalies from previously published temperature records in the western Mediterranean Sea (from 3 to 13 degrees C). The RI-OH-based temperature anomalies also confirm the regional differences and seasonal contrasts in interglacial-glacial anomalies produced by models. |
author2 |
Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Collège de France - Chaire Evolution du climat et de l'océan Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Davtian, Nina Ménot, Guillemette Fagault, Yoann Bard, Edouard |
author_facet |
Davtian, Nina Ménot, Guillemette Fagault, Yoann Bard, Edouard |
author_sort |
Davtian, Nina |
title |
Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index |
title_short |
Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index |
title_full |
Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index |
title_fullStr |
Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index |
title_full_unstemmed |
Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index |
title_sort |
western mediterranean sea paleothermometry over the last glacial cycle based on the novel ri‐oh index |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02115659 https://hal.science/hal-02115659/document https://hal.science/hal-02115659/file/2018PA003452.pdf https://doi.org/10.1029/2018PA003452 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 2572-4525 EISSN: 1944-9186 Paleoceanography and Paleoclimatology https://hal.science/hal-02115659 Paleoceanography and Paleoclimatology, 2019, 34 (4), pp.616 - 634. ⟨10.1029/2018PA003452⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2018PA003452 hal-02115659 https://hal.science/hal-02115659 https://hal.science/hal-02115659/document https://hal.science/hal-02115659/file/2018PA003452.pdf doi:10.1029/2018PA003452 PRODINRA: 487991 WOS: 000467950300012 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2018PA003452 |
container_title |
Paleoceanography and Paleoclimatology |
container_volume |
34 |
container_issue |
4 |
container_start_page |
616 |
op_container_end_page |
634 |
_version_ |
1785573361516019712 |
spelling |
ftinsu:oai:HAL:hal-02115659v1 2023-12-17T10:49:01+01:00 Western Mediterranean Sea Paleothermometry Over the Last Glacial Cycle Based on the Novel RI‐OH Index Davtian, Nina Ménot, Guillemette Fagault, Yoann Bard, Edouard Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Collège de France - Chaire Evolution du climat et de l'océan Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2019-04-29 https://hal.science/hal-02115659 https://hal.science/hal-02115659/document https://hal.science/hal-02115659/file/2018PA003452.pdf https://doi.org/10.1029/2018PA003452 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2018PA003452 hal-02115659 https://hal.science/hal-02115659 https://hal.science/hal-02115659/document https://hal.science/hal-02115659/file/2018PA003452.pdf doi:10.1029/2018PA003452 PRODINRA: 487991 WOS: 000467950300012 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2572-4525 EISSN: 1944-9186 Paleoceanography and Paleoclimatology https://hal.science/hal-02115659 Paleoceanography and Paleoclimatology, 2019, 34 (4), pp.616 - 634. ⟨10.1029/2018PA003452⟩ planktonic-foraminifera surface temperature organic-matter interannual variability intact polar iberian margin climatic variability dialkyl glycerol tetraethers isoprenoid tetraether lipids membrane-lipids glacial-interglacial transitions sea surface temperature western Mediterranean Sea GDGTs TEX86 RI-OH [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2019 ftinsu https://doi.org/10.1029/2018PA003452 2023-11-22T17:35:17Z International audience RI-OH (ring index of hydroxylated tetraethers) has recently been proposed to reconstruct paleotemperatures in middle- to low-latitude marginal seas. However, RI-OH has barely been tested in marginal seas under substantial terrigenous inputs. Here we analyze tetraether lipids in two adjacent marine cores from the Gulf of Lions. We then test for the first time the RI-OH paleothermometer from 160 to 9 ka BP in the western Mediterranean Sea. While terrigenous inputs prevent TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) from behaving as a paleothermometer, RI-OH is generally consistent with other paleothermometric proxies. RI-OH also responds systematically and coherently to glacial-interglacial transitions as well as to abrupt climatic events. The average difference between RI-OH temperatures and November-May U-37(K') (C-37 ketone unsaturation ratio) temperatures is -2.0 degrees C with a standard error of 0.4 degrees C based on 249 RI-OH-U- 37(K') comparisons. This systematic difference suggests that hydroxylated tetraethers and alkenones record different temperatures, for instance, winter and/or subsurface temperatures for RI-OH. Another source of bias could be linked to the available RI-OH-temperature calibration, which clearly needs more work at the global and regional scales, notably for semienclosed basins such as the Mediterranean Sea. Nevertheless, our RI-OH-based interglacial-glacial anomalies are of 10 degrees C, a value within the high end of anomalies from previously published temperature records in the western Mediterranean Sea (from 3 to 13 degrees C). The RI-OH-based temperature anomalies also confirm the regional differences and seasonal contrasts in interglacial-glacial anomalies produced by models. Article in Journal/Newspaper Planktonic foraminifera Institut national des sciences de l'Univers: HAL-INSU Paleoceanography and Paleoclimatology 34 4 616 634 |