Enhanced ocean heat storage efficiency during the last deglaciation
Proxy reconstructions suggest that increasing global mean sea surface temperature (GMSST) during the last deglaciation was accompanied by a comparable or greater increase in global mean ocean temperature (GMOT), corresponding to a large heat storage efficiency (HSE; ∆GMOT/∆GMSST). An increased GMOT...
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American Association for the Advancement of Science (AAAS)
2024
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ftarchimer:oai:archimer.ifremer.fr:102061 2024-10-06T13:49:34+00:00 Enhanced ocean heat storage efficiency during the last deglaciation Zhu, Chenyu Sanchez, Saray Liu, Zhengyu Clark, Peter U. He, Chengfei Wan, Lingfeng Lu, Jiuyou Zhu, Chenguang Li, Lingwei Zhang, Shaoqing Cheng, Lijing 2024-09-20 application/pdf https://archimer.ifremer.fr/doc/00909/102061/113318.pdf https://archimer.ifremer.fr/doc/00909/102061/113319.zip https://archimer.ifremer.fr/doc/00909/102061/113320.pdf https://doi.org/10.1126/sciadv.adp5156 https://archimer.ifremer.fr/doc/00909/102061/ eng eng American Association for the Advancement of Science (AAAS) https://archimer.ifremer.fr/doc/00909/102061/113318.pdf https://archimer.ifremer.fr/doc/00909/102061/113319.zip https://archimer.ifremer.fr/doc/00909/102061/113320.pdf doi:10.1126/sciadv.adp5156 https://archimer.ifremer.fr/doc/00909/102061/ info:eu-repo/semantics/openAccess restricted use Science Advances (2375-2548) (American Association for the Advancement of Science (AAAS)), 2024-09-20 , Vol. 10 , N. 38 , P. eadp5156 (9p.) text Article info:eu-repo/semantics/article 2024 ftarchimer https://doi.org/10.1126/sciadv.adp5156 2024-09-25T14:14:52Z Proxy reconstructions suggest that increasing global mean sea surface temperature (GMSST) during the last deglaciation was accompanied by a comparable or greater increase in global mean ocean temperature (GMOT), corresponding to a large heat storage efficiency (HSE; ∆GMOT/∆GMSST). An increased GMOT is commonly attributed to surface warming at sites of deepwater formation, but winter sea ice covered much of these source areas during the last deglaciation, which would imply an HSE much less than 1. Here, we use climate model simulations and proxy-based reconstructions of ocean temperature changes to show that an increased deglacial HSE is achieved by warming of intermediate-depth waters forced by mid-latitude surface warming in response to greenhouse gas and ice sheet forcing as well as by reduced Atlantic meridional overturning circulation associated with meltwater forcing. These results, which highlight the role of surface warming and oceanic circulation changes, have implications for our understanding of long-term ocean heat storage change. Article in Journal/Newspaper Ice Sheet Sea ice Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Science Advances 10 38 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Proxy reconstructions suggest that increasing global mean sea surface temperature (GMSST) during the last deglaciation was accompanied by a comparable or greater increase in global mean ocean temperature (GMOT), corresponding to a large heat storage efficiency (HSE; ∆GMOT/∆GMSST). An increased GMOT is commonly attributed to surface warming at sites of deepwater formation, but winter sea ice covered much of these source areas during the last deglaciation, which would imply an HSE much less than 1. Here, we use climate model simulations and proxy-based reconstructions of ocean temperature changes to show that an increased deglacial HSE is achieved by warming of intermediate-depth waters forced by mid-latitude surface warming in response to greenhouse gas and ice sheet forcing as well as by reduced Atlantic meridional overturning circulation associated with meltwater forcing. These results, which highlight the role of surface warming and oceanic circulation changes, have implications for our understanding of long-term ocean heat storage change. |
format |
Article in Journal/Newspaper |
author |
Zhu, Chenyu Sanchez, Saray Liu, Zhengyu Clark, Peter U. He, Chengfei Wan, Lingfeng Lu, Jiuyou Zhu, Chenguang Li, Lingwei Zhang, Shaoqing Cheng, Lijing |
spellingShingle |
Zhu, Chenyu Sanchez, Saray Liu, Zhengyu Clark, Peter U. He, Chengfei Wan, Lingfeng Lu, Jiuyou Zhu, Chenguang Li, Lingwei Zhang, Shaoqing Cheng, Lijing Enhanced ocean heat storage efficiency during the last deglaciation |
author_facet |
Zhu, Chenyu Sanchez, Saray Liu, Zhengyu Clark, Peter U. He, Chengfei Wan, Lingfeng Lu, Jiuyou Zhu, Chenguang Li, Lingwei Zhang, Shaoqing Cheng, Lijing |
author_sort |
Zhu, Chenyu |
title |
Enhanced ocean heat storage efficiency during the last deglaciation |
title_short |
Enhanced ocean heat storage efficiency during the last deglaciation |
title_full |
Enhanced ocean heat storage efficiency during the last deglaciation |
title_fullStr |
Enhanced ocean heat storage efficiency during the last deglaciation |
title_full_unstemmed |
Enhanced ocean heat storage efficiency during the last deglaciation |
title_sort |
enhanced ocean heat storage efficiency during the last deglaciation |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2024 |
url |
https://archimer.ifremer.fr/doc/00909/102061/113318.pdf https://archimer.ifremer.fr/doc/00909/102061/113319.zip https://archimer.ifremer.fr/doc/00909/102061/113320.pdf https://doi.org/10.1126/sciadv.adp5156 https://archimer.ifremer.fr/doc/00909/102061/ |
genre |
Ice Sheet Sea ice |
genre_facet |
Ice Sheet Sea ice |
op_source |
Science Advances (2375-2548) (American Association for the Advancement of Science (AAAS)), 2024-09-20 , Vol. 10 , N. 38 , P. eadp5156 (9p.) |
op_relation |
https://archimer.ifremer.fr/doc/00909/102061/113318.pdf https://archimer.ifremer.fr/doc/00909/102061/113319.zip https://archimer.ifremer.fr/doc/00909/102061/113320.pdf doi:10.1126/sciadv.adp5156 https://archimer.ifremer.fr/doc/00909/102061/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1126/sciadv.adp5156 |
container_title |
Science Advances |
container_volume |
10 |
container_issue |
38 |
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1812177645043974144 |