Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC)
International audience In contrast to the modern-day climate, North Pacific deep water formation and a Pacific meridional overturning circulation (PMOC) may have been active during past climate conditions, in particular during the Pliocene epoch (some 3–5 million years ago). Here, we use a climate m...
Main Authors: | , , , |
---|---|
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
|
Subjects: | |
Online Access: | https://hal.science/hal-03279860 https://hal.science/hal-03279860/document https://hal.science/hal-03279860/file/Geophysical%20Research%20Letters%20-%202021%20-%20Thomas%20-%20Oceanic%20Pathways%20of%20an%20Active%20Pacific%20Meridional%20Overturning%20Circulation%20.pdf https://doi.org/10.1029/2020gl091935 |
id |
ftunivparis:oai:HAL:hal-03279860v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Paris: Portail HAL |
op_collection_id |
ftunivparis |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Thomas, Matthew D. Fedorov, Alexey V. Burls, Natalie J. Liu, Wei Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC) |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience In contrast to the modern-day climate, North Pacific deep water formation and a Pacific meridional overturning circulation (PMOC) may have been active during past climate conditions, in particular during the Pliocene epoch (some 3–5 million years ago). Here, we use a climate model simulation with a robust PMOC cell to investigate the pathways of the North Pacific deep water from subduction to upwelling, as revealed by Lagrangian particle trajectories. We find that similar to the present-day Atlantic Meridional Overturning Circulation (AMOC), most subducted North Pacific deep water upwells in the Southern Ocean. However, roughly 15% upwells in the tropical Indo-Pacific Oceans instead—a key feature distinguishing the PMOC from the AMOC. The connection to the Indian Ocean is relatively fast, at about 250 years. The connection to the tropical Pacific is slower (∼800 years) as water first travels to the subtropical South Pacific then gradually upwells through the thermocline. |
author2 |
Yale University New Haven Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) George Mason University Fairfax University of California Riverside (UC Riverside) University of California (UC) ANR-18-MPGA-0001,ARCHANGE,Changement climatique et Arctique et circulation océanique globale(2018) |
format |
Article in Journal/Newspaper |
author |
Thomas, Matthew D. Fedorov, Alexey V. Burls, Natalie J. Liu, Wei |
author_facet |
Thomas, Matthew D. Fedorov, Alexey V. Burls, Natalie J. Liu, Wei |
author_sort |
Thomas, Matthew D. |
title |
Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC) |
title_short |
Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC) |
title_full |
Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC) |
title_fullStr |
Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC) |
title_full_unstemmed |
Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC) |
title_sort |
oceanic pathways of an active pacific meridional overturning circulation (pmoc) |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03279860 https://hal.science/hal-03279860/document https://hal.science/hal-03279860/file/Geophysical%20Research%20Letters%20-%202021%20-%20Thomas%20-%20Oceanic%20Pathways%20of%20an%20Active%20Pacific%20Meridional%20Overturning%20Circulation%20.pdf https://doi.org/10.1029/2020gl091935 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03279860 Geophysical Research Letters, 2021, 48 (10), pp.e2020GL091935. ⟨10.1029/2020gl091935⟩ https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020GL091935 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020gl091935 hal-03279860 https://hal.science/hal-03279860 https://hal.science/hal-03279860/document https://hal.science/hal-03279860/file/Geophysical%20Research%20Letters%20-%202021%20-%20Thomas%20-%20Oceanic%20Pathways%20of%20an%20Active%20Pacific%20Meridional%20Overturning%20Circulation%20.pdf doi:10.1029/2020gl091935 WOS: 000658600300021 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020gl09193510.1029/2020GL091935 |
_version_ |
1799467332068704256 |
spelling |
ftunivparis:oai:HAL:hal-03279860v1 2024-05-19T07:48:56+00:00 Oceanic pathways of an active Pacific Meridional Overturning Circulation (PMOC) Thomas, Matthew D. Fedorov, Alexey V. Burls, Natalie J. Liu, Wei Yale University New Haven Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) George Mason University Fairfax University of California Riverside (UC Riverside) University of California (UC) ANR-18-MPGA-0001,ARCHANGE,Changement climatique et Arctique et circulation océanique globale(2018) 2021-05-28 https://hal.science/hal-03279860 https://hal.science/hal-03279860/document https://hal.science/hal-03279860/file/Geophysical%20Research%20Letters%20-%202021%20-%20Thomas%20-%20Oceanic%20Pathways%20of%20an%20Active%20Pacific%20Meridional%20Overturning%20Circulation%20.pdf https://doi.org/10.1029/2020gl091935 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2020gl091935 hal-03279860 https://hal.science/hal-03279860 https://hal.science/hal-03279860/document https://hal.science/hal-03279860/file/Geophysical%20Research%20Letters%20-%202021%20-%20Thomas%20-%20Oceanic%20Pathways%20of%20an%20Active%20Pacific%20Meridional%20Overturning%20Circulation%20.pdf doi:10.1029/2020gl091935 WOS: 000658600300021 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03279860 Geophysical Research Letters, 2021, 48 (10), pp.e2020GL091935. ⟨10.1029/2020gl091935⟩ https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020GL091935 [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2021 ftunivparis https://doi.org/10.1029/2020gl09193510.1029/2020GL091935 2024-04-23T03:35:45Z International audience In contrast to the modern-day climate, North Pacific deep water formation and a Pacific meridional overturning circulation (PMOC) may have been active during past climate conditions, in particular during the Pliocene epoch (some 3–5 million years ago). Here, we use a climate model simulation with a robust PMOC cell to investigate the pathways of the North Pacific deep water from subduction to upwelling, as revealed by Lagrangian particle trajectories. We find that similar to the present-day Atlantic Meridional Overturning Circulation (AMOC), most subducted North Pacific deep water upwells in the Southern Ocean. However, roughly 15% upwells in the tropical Indo-Pacific Oceans instead—a key feature distinguishing the PMOC from the AMOC. The connection to the Indian Ocean is relatively fast, at about 250 years. The connection to the tropical Pacific is slower (∼800 years) as water first travels to the subtropical South Pacific then gradually upwells through the thermocline. Article in Journal/Newspaper Southern Ocean Université de Paris: Portail HAL |