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Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming

Marine heatwaves (MHWs) exert devastating impacts on ecosystems and have been revealed to increase in their incidence, duration, and intensity in response to greenhouse warming. The biologically productive eastern boundary upwelling systems (EBUSs) are generally regarded as thermal refugia for marin...

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Autores principales: Wang, Shengpeng, Jing, Zhao, Wu, Lixin, Sun, Shantong, Peng, Qihua, Wang, Hong, Zhang, Yu, Shi, Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9810606/
https://www.ncbi.nlm.nih.gov/pubmed/36596808
http://dx.doi.org/10.1038/s41467-022-35666-8
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author Wang, Shengpeng
Jing, Zhao
Wu, Lixin
Sun, Shantong
Peng, Qihua
Wang, Hong
Zhang, Yu
Shi, Jian
author_facet Wang, Shengpeng
Jing, Zhao
Wu, Lixin
Sun, Shantong
Peng, Qihua
Wang, Hong
Zhang, Yu
Shi, Jian
author_sort Wang, Shengpeng
collection PubMed
description Marine heatwaves (MHWs) exert devastating impacts on ecosystems and have been revealed to increase in their incidence, duration, and intensity in response to greenhouse warming. The biologically productive eastern boundary upwelling systems (EBUSs) are generally regarded as thermal refugia for marine species due to buffering effects of upwelling on ocean warming. However, using an ensemble of state-of-the-art high-resolution global climate simulations under a high carbon emission scenario, here we show that the MHW stress, measured as the annual cumulative intensity of MHWs, is projected to increase faster in the Southern Hemisphere EBUSs (Humboldt and Benguela current systems) than in their adjacent oceans. This is mainly because the additional warming caused by the weakened eastern boundary currents overwhelms the buffering effect of upwelling. Our findings suggest that the Southern Hemisphere EBUSs will emerge as local hotspots of MHWs in the future, potentially causing severe threats to the ecosystems.
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spelling pubmed-98106062023-01-05 Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming Wang, Shengpeng Jing, Zhao Wu, Lixin Sun, Shantong Peng, Qihua Wang, Hong Zhang, Yu Shi, Jian Nat Commun Article Marine heatwaves (MHWs) exert devastating impacts on ecosystems and have been revealed to increase in their incidence, duration, and intensity in response to greenhouse warming. The biologically productive eastern boundary upwelling systems (EBUSs) are generally regarded as thermal refugia for marine species due to buffering effects of upwelling on ocean warming. However, using an ensemble of state-of-the-art high-resolution global climate simulations under a high carbon emission scenario, here we show that the MHW stress, measured as the annual cumulative intensity of MHWs, is projected to increase faster in the Southern Hemisphere EBUSs (Humboldt and Benguela current systems) than in their adjacent oceans. This is mainly because the additional warming caused by the weakened eastern boundary currents overwhelms the buffering effect of upwelling. Our findings suggest that the Southern Hemisphere EBUSs will emerge as local hotspots of MHWs in the future, potentially causing severe threats to the ecosystems. Nature Publishing Group UK 2023-01-03 /pmc/articles/PMC9810606/ /pubmed/36596808 http://dx.doi.org/10.1038/s41467-022-35666-8 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Wang, Shengpeng
Jing, Zhao
Wu, Lixin
Sun, Shantong
Peng, Qihua
Wang, Hong
Zhang, Yu
Shi, Jian
Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming
title Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming
title_full Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming
title_fullStr Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming
title_full_unstemmed Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming
title_short Southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming
title_sort southern hemisphere eastern boundary upwelling systems emerging as future marine heatwave hotspots under greenhouse warming
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9810606/
https://www.ncbi.nlm.nih.gov/pubmed/36596808
http://dx.doi.org/10.1038/s41467-022-35666-8
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