Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance
Mesoscale eddies dominate the ocean kinetic energy reservoir. However, how and where this energy flows out from the mesoscale remains uncertain. Here, a simplified mesoscale energy budget is used where sources due to baroclinic instability are balanced by all the dissipative processes approximated a...
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ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-129570 2024-02-11T09:58:43+01:00 Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance Torres, Romain Waldman, Robin Mak, Julian Seferian, Roland 2023 https://repository.hkust.edu.hk/ir/Record/1783.1-129570 https://doi.org/10.1029/2023GL104688 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2023&rft.spage=&rft.aulast=Torres&rft.aufirst=Romain&rft.atitle=Global+Estimation+of+the+Eddy+Kinetic+Energy+Dissipation+From+a+Diagnostic+Energy+Balance&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-85174590259&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001084236100001 English eng John Wiley and Sons Inc https://repository.hkust.edu.hk/ir/Record/1783.1-129570 Geophysical Research Letters, v. 50, (20), October 2023, article number e2023GL104688 0094-8276 1944-8007 https://doi.org/10.1029/2023GL104688 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2023&rft.spage=&rft.aulast=Torres&rft.aufirst=Romain&rft.atitle=Global+Estimation+of+the+Eddy+Kinetic+Energy+Dissipation+From+a+Diagnostic+Energy+Balance&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-85174590259&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001084236100001 Eddy dissipation Article 2023 ftunivsthongkong https://doi.org/10.1029/2023GL104688 2024-01-19T01:13:47Z Mesoscale eddies dominate the ocean kinetic energy reservoir. However, how and where this energy flows out from the mesoscale remains uncertain. Here, a simplified mesoscale energy budget is used where sources due to baroclinic instability are balanced by all the dissipative processes approximated as a linear damping rate. In this simple model, the eddy kinetic energy (EKE) dissipation is computed from a climatological mean field of density and satellite altimeter data, and is proportional to an eddy efficiency parameter α. Assuming an eddy efficiency of α = 0.1, we find a global EKE dissipation rate of 0.66 ± 0.19 TW. The results show an intense dissipation near western boundary currents and in the Antarctic Circumpolar Current, where both large levels of energy and baroclinic conversion occur. The resulting geographical distribution of the dissipation rate brings new insights for closing the ocean kinetic energy budget, as well as constraining future mesoscale parameterizations and associated mixing processes. © 2023 The Authors. Article in Journal/Newspaper Antarc* Antarctic The Hong Kong University of Science and Technology: HKUST Institutional Repository Antarctic The Antarctic Geophysical Research Letters 50 20 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
topic |
Eddy dissipation |
spellingShingle |
Eddy dissipation Torres, Romain Waldman, Robin Mak, Julian Seferian, Roland Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance |
topic_facet |
Eddy dissipation |
description |
Mesoscale eddies dominate the ocean kinetic energy reservoir. However, how and where this energy flows out from the mesoscale remains uncertain. Here, a simplified mesoscale energy budget is used where sources due to baroclinic instability are balanced by all the dissipative processes approximated as a linear damping rate. In this simple model, the eddy kinetic energy (EKE) dissipation is computed from a climatological mean field of density and satellite altimeter data, and is proportional to an eddy efficiency parameter α. Assuming an eddy efficiency of α = 0.1, we find a global EKE dissipation rate of 0.66 ± 0.19 TW. The results show an intense dissipation near western boundary currents and in the Antarctic Circumpolar Current, where both large levels of energy and baroclinic conversion occur. The resulting geographical distribution of the dissipation rate brings new insights for closing the ocean kinetic energy budget, as well as constraining future mesoscale parameterizations and associated mixing processes. © 2023 The Authors. |
format |
Article in Journal/Newspaper |
author |
Torres, Romain Waldman, Robin Mak, Julian Seferian, Roland |
author_facet |
Torres, Romain Waldman, Robin Mak, Julian Seferian, Roland |
author_sort |
Torres, Romain |
title |
Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance |
title_short |
Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance |
title_full |
Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance |
title_fullStr |
Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance |
title_full_unstemmed |
Global Estimation of the Eddy Kinetic Energy Dissipation From a Diagnostic Energy Balance |
title_sort |
global estimation of the eddy kinetic energy dissipation from a diagnostic energy balance |
publisher |
John Wiley and Sons Inc |
publishDate |
2023 |
url |
https://repository.hkust.edu.hk/ir/Record/1783.1-129570 https://doi.org/10.1029/2023GL104688 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2023&rft.spage=&rft.aulast=Torres&rft.aufirst=Romain&rft.atitle=Global+Estimation+of+the+Eddy+Kinetic+Energy+Dissipation+From+a+Diagnostic+Energy+Balance&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-85174590259&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001084236100001 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://repository.hkust.edu.hk/ir/Record/1783.1-129570 Geophysical Research Letters, v. 50, (20), October 2023, article number e2023GL104688 0094-8276 1944-8007 https://doi.org/10.1029/2023GL104688 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2023&rft.spage=&rft.aulast=Torres&rft.aufirst=Romain&rft.atitle=Global+Estimation+of+the+Eddy+Kinetic+Energy+Dissipation+From+a+Diagnostic+Energy+Balance&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-85174590259&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001084236100001 |
op_doi |
https://doi.org/10.1029/2023GL104688 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
20 |
_version_ |
1790594462093672448 |