Wind-stress feedback amplification of abrupt millennial-scale climate changes
International audience The influence of changes in surface wind-stress on the properties (amplitude and period) and domain of existence of thermohaline millennial oscillations is studied by means of a coupled model of intermediate complexity set up in an idealized spherical sector geometry of the At...
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ftccsdartic:oai:HAL:hal-00853180v1 2023-05-15T16:00:03+02:00 Wind-stress feedback amplification of abrupt millennial-scale climate changes Arzel, Olivier England, Matthew H. Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Climate Change Research Centre Sydney (CCRC) University of New South Wales Sydney (UNSW) 2013-02 https://hal.archives-ouvertes.fr/hal-00853180 https://doi.org/10.1007/s00382-012-1288-1 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-012-1288-1 hal-00853180 https://hal.archives-ouvertes.fr/hal-00853180 doi:10.1007/s00382-012-1288-1 ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.archives-ouvertes.fr/hal-00853180 Climate Dynamics, Springer Verlag, 2013, 40 (3-4), pp.983-995. ⟨10.1007/s00382-012-1288-1⟩ Dansgaard-Oeschger events Atlantic Meridional Overturning Circulation Stability properties Wind-stress feedback [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2013 ftccsdartic https://doi.org/10.1007/s00382-012-1288-1 2021-10-17T01:38:10Z International audience The influence of changes in surface wind-stress on the properties (amplitude and period) and domain of existence of thermohaline millennial oscillations is studied by means of a coupled model of intermediate complexity set up in an idealized spherical sector geometry of the Atlantic basin. Using the atmospheric CO2 concentration as the control parameter, bifurcation diagrams of the model are built to show that the influence of wind-stress changes on glacial abrupt variability is threefold. First, millennial-scale oscillations are significantly amplified through wind-feedback-induced changes in both northern sea ice export and oceanic heat transport. Changes in surface wind-stress more than double the amplitude of the strong warming events that punctuate glacial abrupt variability obtained under prescribed winds in the model. Second, the average duration of both stadials and interstadials is significantly lengthened and the temporal structure of observed variability is better captured under interactive winds. Third, the generation of millennial-scale oscillations is shown to occur for significantly colder climates when wind-stress feedback is enabled. This behaviour results from the strengthening of the negative temperature-advection feedback associated with stronger northward oceanic heat transport under interactive winds. Article in Journal/Newspaper Dansgaard-Oeschger events Sea ice Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Climate Dynamics 40 3-4 983 995 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Dansgaard-Oeschger events Atlantic Meridional Overturning Circulation Stability properties Wind-stress feedback [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Dansgaard-Oeschger events Atlantic Meridional Overturning Circulation Stability properties Wind-stress feedback [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Arzel, Olivier England, Matthew H. Wind-stress feedback amplification of abrupt millennial-scale climate changes |
topic_facet |
Dansgaard-Oeschger events Atlantic Meridional Overturning Circulation Stability properties Wind-stress feedback [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The influence of changes in surface wind-stress on the properties (amplitude and period) and domain of existence of thermohaline millennial oscillations is studied by means of a coupled model of intermediate complexity set up in an idealized spherical sector geometry of the Atlantic basin. Using the atmospheric CO2 concentration as the control parameter, bifurcation diagrams of the model are built to show that the influence of wind-stress changes on glacial abrupt variability is threefold. First, millennial-scale oscillations are significantly amplified through wind-feedback-induced changes in both northern sea ice export and oceanic heat transport. Changes in surface wind-stress more than double the amplitude of the strong warming events that punctuate glacial abrupt variability obtained under prescribed winds in the model. Second, the average duration of both stadials and interstadials is significantly lengthened and the temporal structure of observed variability is better captured under interactive winds. Third, the generation of millennial-scale oscillations is shown to occur for significantly colder climates when wind-stress feedback is enabled. This behaviour results from the strengthening of the negative temperature-advection feedback associated with stronger northward oceanic heat transport under interactive winds. |
author2 |
Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Climate Change Research Centre Sydney (CCRC) University of New South Wales Sydney (UNSW) |
format |
Article in Journal/Newspaper |
author |
Arzel, Olivier England, Matthew H. |
author_facet |
Arzel, Olivier England, Matthew H. |
author_sort |
Arzel, Olivier |
title |
Wind-stress feedback amplification of abrupt millennial-scale climate changes |
title_short |
Wind-stress feedback amplification of abrupt millennial-scale climate changes |
title_full |
Wind-stress feedback amplification of abrupt millennial-scale climate changes |
title_fullStr |
Wind-stress feedback amplification of abrupt millennial-scale climate changes |
title_full_unstemmed |
Wind-stress feedback amplification of abrupt millennial-scale climate changes |
title_sort |
wind-stress feedback amplification of abrupt millennial-scale climate changes |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.archives-ouvertes.fr/hal-00853180 https://doi.org/10.1007/s00382-012-1288-1 |
genre |
Dansgaard-Oeschger events Sea ice |
genre_facet |
Dansgaard-Oeschger events Sea ice |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.archives-ouvertes.fr/hal-00853180 Climate Dynamics, Springer Verlag, 2013, 40 (3-4), pp.983-995. ⟨10.1007/s00382-012-1288-1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-012-1288-1 hal-00853180 https://hal.archives-ouvertes.fr/hal-00853180 doi:10.1007/s00382-012-1288-1 |
op_doi |
https://doi.org/10.1007/s00382-012-1288-1 |
container_title |
Climate Dynamics |
container_volume |
40 |
container_issue |
3-4 |
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983 |
op_container_end_page |
995 |
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