The Drake Passage opening and its effects: an old friend with a new insight
International audience The impact of the Drake Passage (DP) opening on climate is being debated for dozens of years. Indeed, being one of the major geographical changes occurring during the Eocene and at the beginning of a global climate cooling, it has often generated a lot of interest. To date, ev...
Main Authors: | , , , , |
---|---|
Other Authors: | , , , , , , , , , , , , , , , |
Format: | Conference Object |
Language: | English |
Published: |
HAL CCSD
2018
|
Subjects: | |
Online Access: | https://insu.hal.science/insu-02060565 |
id |
ftunivaixmarseil:oai:HAL:insu-02060565v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Toumoulin, Agathe Donnadieu, Yannick Ladant, Jean-Baptiste Poblete, Fernando Dupont-Nivet, Guillaume The Drake Passage opening and its effects: an old friend with a new insight |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience The impact of the Drake Passage (DP) opening on climate is being debated for dozens of years. Indeed, being one of the major geographical changes occurring during the Eocene and at the beginning of a global climate cooling, it has often generated a lot of interest. To date, even though the overall signal remains unclear, it is considered as one of the main potential cause of the contemporaneous climate change. Several model studies have been aiming to assess the importance of this gateway opening through different more or less complex models. However, according to our knowledge on palaeoenvironments, most of them considered unrealistic boundary conditions (notably a low pCO2 or a today like geography) that might corrupt the transposition of their results to the original deep-time context. Therefore, in order to better understand how climate might have been affected by this gateway opening and to trace its history, the DP question is here evaluated using an up2date IPCC like model, the IPSL-CM5A2, and Eocene-like boundary conditions (1120ppm, 40Ma land-sea distribution including an open Panama Seaway). Five simulations have been performed using a closed Drake configuration plus four different DP depths 100m, 300m, 1000m and 2500m. These experiments should help to understand if the impact of the DP was progressive or rather non linear while the passage deepened. Our results will be compared to Neodymium data and will be discussed in the broader context of the Eocene-Oligocene climatic transition. |
author2 |
Géosciences Environnement Toulouse (GET) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-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) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Universidad de O'Higgins (UOH) Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) University of Potsdam = Universität Potsdam |
format |
Conference Object |
author |
Toumoulin, Agathe Donnadieu, Yannick Ladant, Jean-Baptiste Poblete, Fernando Dupont-Nivet, Guillaume |
author_facet |
Toumoulin, Agathe Donnadieu, Yannick Ladant, Jean-Baptiste Poblete, Fernando Dupont-Nivet, Guillaume |
author_sort |
Toumoulin, Agathe |
title |
The Drake Passage opening and its effects: an old friend with a new insight |
title_short |
The Drake Passage opening and its effects: an old friend with a new insight |
title_full |
The Drake Passage opening and its effects: an old friend with a new insight |
title_fullStr |
The Drake Passage opening and its effects: an old friend with a new insight |
title_full_unstemmed |
The Drake Passage opening and its effects: an old friend with a new insight |
title_sort |
drake passage opening and its effects: an old friend with a new insight |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://insu.hal.science/insu-02060565 |
op_coverage |
Vienne, Austria |
genre |
Drake Passage |
genre_facet |
Drake Passage |
op_source |
European Geosciences Union General Assembly 2018 https://insu.hal.science/insu-02060565 European Geosciences Union General Assembly 2018, Apr 2018, Vienne, Austria. Geophysical Research Abstracts, 20, pp.EGU2018-8086, 2018 |
op_relation |
insu-02060565 https://insu.hal.science/insu-02060565 |
_version_ |
1799479082261413888 |
spelling |
ftunivaixmarseil:oai:HAL:insu-02060565v1 2024-05-19T07:39:30+00:00 The Drake Passage opening and its effects: an old friend with a new insight Toumoulin, Agathe Donnadieu, Yannick Ladant, Jean-Baptiste Poblete, Fernando Dupont-Nivet, Guillaume Géosciences Environnement Toulouse (GET) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-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) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Universidad de O'Higgins (UOH) Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) University of Potsdam = Universität Potsdam Vienne, Austria 2018-04-08 https://insu.hal.science/insu-02060565 en eng HAL CCSD insu-02060565 https://insu.hal.science/insu-02060565 European Geosciences Union General Assembly 2018 https://insu.hal.science/insu-02060565 European Geosciences Union General Assembly 2018, Apr 2018, Vienne, Austria. Geophysical Research Abstracts, 20, pp.EGU2018-8086, 2018 [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/conferenceObject Conference poster 2018 ftunivaixmarseil 2024-04-25T00:58:36Z International audience The impact of the Drake Passage (DP) opening on climate is being debated for dozens of years. Indeed, being one of the major geographical changes occurring during the Eocene and at the beginning of a global climate cooling, it has often generated a lot of interest. To date, even though the overall signal remains unclear, it is considered as one of the main potential cause of the contemporaneous climate change. Several model studies have been aiming to assess the importance of this gateway opening through different more or less complex models. However, according to our knowledge on palaeoenvironments, most of them considered unrealistic boundary conditions (notably a low pCO2 or a today like geography) that might corrupt the transposition of their results to the original deep-time context. Therefore, in order to better understand how climate might have been affected by this gateway opening and to trace its history, the DP question is here evaluated using an up2date IPCC like model, the IPSL-CM5A2, and Eocene-like boundary conditions (1120ppm, 40Ma land-sea distribution including an open Panama Seaway). Five simulations have been performed using a closed Drake configuration plus four different DP depths 100m, 300m, 1000m and 2500m. These experiments should help to understand if the impact of the DP was progressive or rather non linear while the passage deepened. Our results will be compared to Neodymium data and will be discussed in the broader context of the Eocene-Oligocene climatic transition. Conference Object Drake Passage Aix-Marseille Université: HAL |