AMOC thresholds in CMIP6 models: NAHosMIP
International audience The Atlantic meridional overturning circulation (AMOC) is an important part of our climate system, which keeps the North Atlantic relatively warm. It is predicted to weaken under climate change. The AMOC may have a tipping point beyond which recovery is difficult, hence showin...
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ftunivnantes:oai:HAL:hal-03869321v1 2023-05-15T17:27:35+02:00 AMOC thresholds in CMIP6 models: NAHosMIP Jackson, Laura Alastrue-De-Asenjo, Eduardo Bellomo, Katinka Danabasoglu, Gokhan Hu, Aixue Jungclaus, Johann Meccia, Virna Saenko, Oleg Shao, Andrew Swingedouw, Didier UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Vienne, Austria 2022-05-23 https://hal.science/hal-03869321 https://doi.org/10.5194/egusphere-egu22-2778 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu22-2778 hal-03869321 https://hal.science/hal-03869321 doi:10.5194/egusphere-egu22-2778 EGU General Assembly 2022 https://hal.science/hal-03869321 EGU General Assembly 2022, May 2022, Vienne, Austria. ⟨10.5194/egusphere-egu22-2778⟩ [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference papers 2022 ftunivnantes https://doi.org/10.5194/egusphere-egu22-2778 2023-02-08T02:07:32Z International audience The Atlantic meridional overturning circulation (AMOC) is an important part of our climate system, which keeps the North Atlantic relatively warm. It is predicted to weaken under climate change. The AMOC may have a tipping point beyond which recovery is difficult, hence showing quasi-irreversibility (hysteresis). Although hysteresis has been seen in simple models, it has been difficult to demonstrate in comprehensive global climate models. We present initial results from the North Atlantic hosing model intercomparison project, where we applied an idealised forcing of a freshwater flux over the North Atlantic in 9 CMIP6 models. The AMOC weakens in all models from the freshening, but once the freshening ceases, the AMOC recovers in some models, and in others it stays in a weakened state. We discuss how differences in feedbacks affect the AMOC response. Conference Object North Atlantic Université de Nantes: HAL-UNIV-NANTES |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Jackson, Laura Alastrue-De-Asenjo, Eduardo Bellomo, Katinka Danabasoglu, Gokhan Hu, Aixue Jungclaus, Johann Meccia, Virna Saenko, Oleg Shao, Andrew Swingedouw, Didier AMOC thresholds in CMIP6 models: NAHosMIP |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience The Atlantic meridional overturning circulation (AMOC) is an important part of our climate system, which keeps the North Atlantic relatively warm. It is predicted to weaken under climate change. The AMOC may have a tipping point beyond which recovery is difficult, hence showing quasi-irreversibility (hysteresis). Although hysteresis has been seen in simple models, it has been difficult to demonstrate in comprehensive global climate models. We present initial results from the North Atlantic hosing model intercomparison project, where we applied an idealised forcing of a freshwater flux over the North Atlantic in 9 CMIP6 models. The AMOC weakens in all models from the freshening, but once the freshening ceases, the AMOC recovers in some models, and in others it stays in a weakened state. We discuss how differences in feedbacks affect the AMOC response. |
author2 |
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Jackson, Laura Alastrue-De-Asenjo, Eduardo Bellomo, Katinka Danabasoglu, Gokhan Hu, Aixue Jungclaus, Johann Meccia, Virna Saenko, Oleg Shao, Andrew Swingedouw, Didier |
author_facet |
Jackson, Laura Alastrue-De-Asenjo, Eduardo Bellomo, Katinka Danabasoglu, Gokhan Hu, Aixue Jungclaus, Johann Meccia, Virna Saenko, Oleg Shao, Andrew Swingedouw, Didier |
author_sort |
Jackson, Laura |
title |
AMOC thresholds in CMIP6 models: NAHosMIP |
title_short |
AMOC thresholds in CMIP6 models: NAHosMIP |
title_full |
AMOC thresholds in CMIP6 models: NAHosMIP |
title_fullStr |
AMOC thresholds in CMIP6 models: NAHosMIP |
title_full_unstemmed |
AMOC thresholds in CMIP6 models: NAHosMIP |
title_sort |
amoc thresholds in cmip6 models: nahosmip |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03869321 https://doi.org/10.5194/egusphere-egu22-2778 |
op_coverage |
Vienne, Austria |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
EGU General Assembly 2022 https://hal.science/hal-03869321 EGU General Assembly 2022, May 2022, Vienne, Austria. ⟨10.5194/egusphere-egu22-2778⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu22-2778 hal-03869321 https://hal.science/hal-03869321 doi:10.5194/egusphere-egu22-2778 |
op_doi |
https://doi.org/10.5194/egusphere-egu22-2778 |
_version_ |
1766119766486941696 |