Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport
Oceanic eddy-induced meridional heat transport (EHT) is an important process in the Southern Ocean heat budget, the variability of which significantly modulates global meridional overturning circulation (MOC) and Antarctic sea-ice extent. Although it is recognized that mesoscale eddies with scales o...
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ftpubmed:oai:pubmedcentral.nih.gov:10008546 2023-05-15T13:44:02+02:00 Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport Zhang, Zhiwei Liu, Yuelin Qiu, Bo Luo, Yiyong Cai, Wenju Yuan, Qingguo Liu, Yinxing Zhang, Hong Liu, Hailong Miao, Mingfang Zhang, Jinchao Zhao, Wei Tian, Jiwei 2023-03-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10008546/ http://www.ncbi.nlm.nih.gov/pubmed/36906683 https://doi.org/10.1038/s41467-023-36991-2 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10008546/ http://www.ncbi.nlm.nih.gov/pubmed/36906683 http://dx.doi.org/10.1038/s41467-023-36991-2 © 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/) . Nat Commun Article Text 2023 ftpubmed https://doi.org/10.1038/s41467-023-36991-2 2023-03-19T01:46:42Z Oceanic eddy-induced meridional heat transport (EHT) is an important process in the Southern Ocean heat budget, the variability of which significantly modulates global meridional overturning circulation (MOC) and Antarctic sea-ice extent. Although it is recognized that mesoscale eddies with scales of ~40–300 km greatly contribute to the EHT, the role of submesoscale eddies with scales of ~1–40 km remains unclear. Here, using two state-of-the-art high-resolution simulations (resolutions of 1/48° and 1/24°), we find that submesoscale eddies significantly enhance the total poleward EHT in the Southern Ocean with an enhancement percentage reaching 19–48% in the Antarctic Circumpolar Current band. By comparing the eddy energy budgets between the two simulations, we detect that the primary role of submesoscale eddies is to strengthen mesoscale eddies (and thus their heat transport capability) through inverse energy cascade rather than directly through submesoscale heat fluxes. Due to the submesoscale-mediated enhancement of mesoscale eddies in the 1/48° simulation, the clockwise upper cell and anti-clockwise lower cell of the residual-mean MOC in the Southern Ocean are weakened and strengthened, respectively. This finding identifies a potential route to improve the mesoscale parameterization in climate models for more accurate simulations of the MOC and sea ice variability in the Southern Ocean. Text Antarc* Antarctic Sea ice Southern Ocean PubMed Central (PMC) Antarctic Southern Ocean The Antarctic Nature Communications 14 1 |
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Article Zhang, Zhiwei Liu, Yuelin Qiu, Bo Luo, Yiyong Cai, Wenju Yuan, Qingguo Liu, Yinxing Zhang, Hong Liu, Hailong Miao, Mingfang Zhang, Jinchao Zhao, Wei Tian, Jiwei Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport |
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Article |
description |
Oceanic eddy-induced meridional heat transport (EHT) is an important process in the Southern Ocean heat budget, the variability of which significantly modulates global meridional overturning circulation (MOC) and Antarctic sea-ice extent. Although it is recognized that mesoscale eddies with scales of ~40–300 km greatly contribute to the EHT, the role of submesoscale eddies with scales of ~1–40 km remains unclear. Here, using two state-of-the-art high-resolution simulations (resolutions of 1/48° and 1/24°), we find that submesoscale eddies significantly enhance the total poleward EHT in the Southern Ocean with an enhancement percentage reaching 19–48% in the Antarctic Circumpolar Current band. By comparing the eddy energy budgets between the two simulations, we detect that the primary role of submesoscale eddies is to strengthen mesoscale eddies (and thus their heat transport capability) through inverse energy cascade rather than directly through submesoscale heat fluxes. Due to the submesoscale-mediated enhancement of mesoscale eddies in the 1/48° simulation, the clockwise upper cell and anti-clockwise lower cell of the residual-mean MOC in the Southern Ocean are weakened and strengthened, respectively. This finding identifies a potential route to improve the mesoscale parameterization in climate models for more accurate simulations of the MOC and sea ice variability in the Southern Ocean. |
format |
Text |
author |
Zhang, Zhiwei Liu, Yuelin Qiu, Bo Luo, Yiyong Cai, Wenju Yuan, Qingguo Liu, Yinxing Zhang, Hong Liu, Hailong Miao, Mingfang Zhang, Jinchao Zhao, Wei Tian, Jiwei |
author_facet |
Zhang, Zhiwei Liu, Yuelin Qiu, Bo Luo, Yiyong Cai, Wenju Yuan, Qingguo Liu, Yinxing Zhang, Hong Liu, Hailong Miao, Mingfang Zhang, Jinchao Zhao, Wei Tian, Jiwei |
author_sort |
Zhang, Zhiwei |
title |
Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport |
title_short |
Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport |
title_full |
Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport |
title_fullStr |
Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport |
title_full_unstemmed |
Submesoscale inverse energy cascade enhances Southern Ocean eddy heat transport |
title_sort |
submesoscale inverse energy cascade enhances southern ocean eddy heat transport |
publisher |
Nature Publishing Group UK |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10008546/ http://www.ncbi.nlm.nih.gov/pubmed/36906683 https://doi.org/10.1038/s41467-023-36991-2 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10008546/ http://www.ncbi.nlm.nih.gov/pubmed/36906683 http://dx.doi.org/10.1038/s41467-023-36991-2 |
op_rights |
© 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/) . |
op_doi |
https://doi.org/10.1038/s41467-023-36991-2 |
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Nature Communications |
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14 |
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1 |
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1766196301800669184 |