Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity
International audience Periods of high atmospheric CO 2 levels during the Cretaceous-early Paleogene (∼ 140 to 34 Myr ago) were marked by very high polar temperatures and reduced latitudinal gradients relative to the Holocene. These features represent a challenge for most climate models, implying ei...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Online Access: | https://hal.science/hal-03607369 https://hal.science/hal-03607369/document https://hal.science/hal-03607369/file/cp-18-435-2022.pdf https://doi.org/10.5194/cp-18-435-2022 |
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openpolar |
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Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Letulle, Thomas Suan, Guillaume Daëron, Mathieu Rogov, Mikhail Lécuyer, Christophe Vinçon-Laugier, Arnauld Reynard, Bruno Montagnac, Gilles Lutikov, Oleg Schlögl, Jan Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Periods of high atmospheric CO 2 levels during the Cretaceous-early Paleogene (∼ 140 to 34 Myr ago) were marked by very high polar temperatures and reduced latitudinal gradients relative to the Holocene. These features represent a challenge for most climate models, implying either higher-than-predicted climate sensitivity to atmospheric CO 2 or systematic biases or misinterpretations in proxy data. Here, we present a reconstruction of marine temperatures at polar (> 80 •) and middle (∼ 40 •) paleolatitudes during the Early Jurassic (∼ 180 Myr ago) based on the clumped isotope (47) and oxygen isotope (δ 18 O c) analyses of shallow buried pristine mollusc shells. Reconstructed calcification temperatures range from ∼ 8 to ∼ 18 • C in the Toarcian Arctic and from ∼ 24 to ∼ 28 • C in Pliensbachian midpaleolatitudes. These polar temperatures were ∼ 10-20 • C higher than present along with reduced latitudinal gradients. Reconstructed seawater oxygen isotope values (δ 18 O w) of −1.5 ‰ to 0.5 ‰ VSMOW and of −5 ‰ to −2.5 ‰ VS-MOW at middle and polar paleolatitudes, respectively, point to a significant freshwater contribution in Arctic regions. These data highlight the risk of assuming the same δ 18 O sw value for δ 18 O-derived temperature from different oceanic regions. These findings provide critical new constraints for model simulations of Jurassic temperatures and δ 18 O sw values and suggest that high climate sensitivity has been a hallmark of greenhouse climates for at least 180 Myr. |
author2 |
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) 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) Paléocéanographie (PALEOCEAN) 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)) Geological Institute of the Russian Academy of Sciences Russian Academy of Sciences Moscow (RAS) Comenius University in Bratislava ANR-18-CE31-0020,Oxymore,Rapports isotopiques de l'oxygène des océans mésozoïques revisités(2018) |
format |
Article in Journal/Newspaper |
author |
Letulle, Thomas Suan, Guillaume Daëron, Mathieu Rogov, Mikhail Lécuyer, Christophe Vinçon-Laugier, Arnauld Reynard, Bruno Montagnac, Gilles Lutikov, Oleg Schlögl, Jan |
author_facet |
Letulle, Thomas Suan, Guillaume Daëron, Mathieu Rogov, Mikhail Lécuyer, Christophe Vinçon-Laugier, Arnauld Reynard, Bruno Montagnac, Gilles Lutikov, Oleg Schlögl, Jan |
author_sort |
Letulle, Thomas |
title |
Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity |
title_short |
Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity |
title_full |
Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity |
title_fullStr |
Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity |
title_full_unstemmed |
Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity |
title_sort |
clumped isotope evidence for early jurassic extreme polar warmth and high climate sensitivity |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03607369 https://hal.science/hal-03607369/document https://hal.science/hal-03607369/file/cp-18-435-2022.pdf https://doi.org/10.5194/cp-18-435-2022 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03607369 Climate of the Past, 2022, 18 (3), pp.435 - 448. ⟨10.5194/cp-18-435-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-18-435-2022 hal-03607369 https://hal.science/hal-03607369 https://hal.science/hal-03607369/document https://hal.science/hal-03607369/file/cp-18-435-2022.pdf doi:10.5194/cp-18-435-2022 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-18-435-2022 |
container_title |
Climate of the Past |
container_volume |
18 |
container_issue |
3 |
container_start_page |
435 |
op_container_end_page |
448 |
_version_ |
1809893898915414016 |
spelling |
ftceafr:oai:HAL:hal-03607369v1 2024-09-09T19:23:57+00:00 Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity Letulle, Thomas Suan, Guillaume Daëron, Mathieu Rogov, Mikhail Lécuyer, Christophe Vinçon-Laugier, Arnauld Reynard, Bruno Montagnac, Gilles Lutikov, Oleg Schlögl, Jan 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) 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) Paléocéanographie (PALEOCEAN) 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)) Geological Institute of the Russian Academy of Sciences Russian Academy of Sciences Moscow (RAS) Comenius University in Bratislava ANR-18-CE31-0020,Oxymore,Rapports isotopiques de l'oxygène des océans mésozoïques revisités(2018) 2022-03-04 https://hal.science/hal-03607369 https://hal.science/hal-03607369/document https://hal.science/hal-03607369/file/cp-18-435-2022.pdf https://doi.org/10.5194/cp-18-435-2022 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-18-435-2022 hal-03607369 https://hal.science/hal-03607369 https://hal.science/hal-03607369/document https://hal.science/hal-03607369/file/cp-18-435-2022.pdf doi:10.5194/cp-18-435-2022 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03607369 Climate of the Past, 2022, 18 (3), pp.435 - 448. ⟨10.5194/cp-18-435-2022⟩ [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 2022 ftceafr https://doi.org/10.5194/cp-18-435-2022 2024-07-22T13:12:10Z International audience Periods of high atmospheric CO 2 levels during the Cretaceous-early Paleogene (∼ 140 to 34 Myr ago) were marked by very high polar temperatures and reduced latitudinal gradients relative to the Holocene. These features represent a challenge for most climate models, implying either higher-than-predicted climate sensitivity to atmospheric CO 2 or systematic biases or misinterpretations in proxy data. Here, we present a reconstruction of marine temperatures at polar (> 80 •) and middle (∼ 40 •) paleolatitudes during the Early Jurassic (∼ 180 Myr ago) based on the clumped isotope (47) and oxygen isotope (δ 18 O c) analyses of shallow buried pristine mollusc shells. Reconstructed calcification temperatures range from ∼ 8 to ∼ 18 • C in the Toarcian Arctic and from ∼ 24 to ∼ 28 • C in Pliensbachian midpaleolatitudes. These polar temperatures were ∼ 10-20 • C higher than present along with reduced latitudinal gradients. Reconstructed seawater oxygen isotope values (δ 18 O w) of −1.5 ‰ to 0.5 ‰ VSMOW and of −5 ‰ to −2.5 ‰ VS-MOW at middle and polar paleolatitudes, respectively, point to a significant freshwater contribution in Arctic regions. These data highlight the risk of assuming the same δ 18 O sw value for δ 18 O-derived temperature from different oceanic regions. These findings provide critical new constraints for model simulations of Jurassic temperatures and δ 18 O sw values and suggest that high climate sensitivity has been a hallmark of greenhouse climates for at least 180 Myr. Article in Journal/Newspaper Arctic HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Arctic Climate of the Past 18 3 435 448 |