Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales
Marginal ice zones are composed of discrete sea-ice floes, whose dynamics are not well captured by the continuum representation of sea ice in most climate models. This study makes use of an ocean Large Eddy Simulation (LES) model, coupled to cylindrical sea-ice floes, to investigate thermal and mech...
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ftcaltechauth:oai:authors.library.caltech.edu:116353 2023-05-15T18:16:10+02:00 Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales Gupta, Mukund Thompson, Andrew F. 2022-08-17 application/pdf video/mpeg https://authors.library.caltech.edu/116353/ https://authors.library.caltech.edu/116353/1/JGR%20Oceans%20-%202022%20-%20Gupta%20-%20Regimes%20of%20sea%E2%80%90ice%20floe%20melt%20%20Ice%E2%80%90ocean%20coupling%20at%20the%20submesoscales.pdf https://authors.library.caltech.edu/116353/2/2022jc018894-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/116353/3/2022jc018894-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/116353/4/2022jc018894-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/116353/5/2022jc018894-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/116353/6/2022jc018894-sup-0005-movie%20si-s04.mp4 https://authors.library.caltech.edu/116353/7/2022jc018894-sup-0006-movie%20si-s05.mp4 https://authors.library.caltech.edu/116353/8/2022jc018894-sup-0007-movie%20si-s06.mp4 https://authors.library.caltech.edu/116353/9/2022jc018894-sup-0008-movie%20si-s07.mp4 https://resolver.caltech.edu/CaltechAUTHORS:20220817-897491000 en eng American Geophysical Union https://authors.library.caltech.edu/116353/1/JGR%20Oceans%20-%202022%20-%20Gupta%20-%20Regimes%20of%20sea%E2%80%90ice%20floe%20melt%20%20Ice%E2%80%90ocean%20coupling%20at%20the%20submesoscales.pdf https://authors.library.caltech.edu/116353/2/2022jc018894-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/116353/3/2022jc018894-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/116353/4/2022jc018894-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/116353/5/2022jc018894-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/116353/6/2022jc018894-sup-0005-movie%20si-s04.mp4 https://authors.library.caltech.edu/116353/7/2022jc018894-sup-0006-movie%20si-s05.mp4 https://authors.library.caltech.edu/116353/8/2022jc018894-sup-0007-movie%20si-s06.mp4 https://authors.library.caltech.edu/116353/9/2022jc018894-sup-0008-movie%20si-s07.mp4 Gupta, Mukund and Thompson, Andrew F. (2022) Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales. Journal of Geophysical Research. Oceans . ISSN 2169-9275. doi:10.1029/2022jc018894. (In Press) https://resolver.caltech.edu/CaltechAUTHORS:20220817-897491000 <https://resolver.caltech.edu/CaltechAUTHORS:20220817-897491000> other Article PeerReviewed 2022 ftcaltechauth https://doi.org/10.1029/2022jc018894 2022-08-18T17:54:57Z Marginal ice zones are composed of discrete sea-ice floes, whose dynamics are not well captured by the continuum representation of sea ice in most climate models. This study makes use of an ocean Large Eddy Simulation (LES) model, coupled to cylindrical sea-ice floes, to investigate thermal and mechanical interactions between melt-induced submesoscale features and sea-ice floes, during summer conditions. We explore the sensitivity of sea-ice melt rates and upper-ocean turbulence properties to floe size, ice-ocean drag and surface winds. Under low wind conditions, upper ocean turbulence transports warm cyclonic filaments from the open ocean toward the center of the floes and enhance their basal melt. This heat transport is partially suppressed by trapping of ice within cold anticyclonic features. When winds are stronger, melt rates are enhanced by the decoupling of floes from the cold, melt-induced lens underneath sea ice. Distinct dynamical regimes emerge in which the influence of warm filaments on sea-ice melt is mitigated by the strength of ice-ocean coupling and eddy size relative to floe size. Simple scaling laws, which may help parameterize these processes in coarse continuum-based sea-ice models, successfully capture floe melt rates under these limiting regimes. Article in Journal/Newspaper Sea ice Caltech Authors (California Institute of Technology) Journal of Geophysical Research: Oceans 127 9 |
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Open Polar |
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Caltech Authors (California Institute of Technology) |
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English |
description |
Marginal ice zones are composed of discrete sea-ice floes, whose dynamics are not well captured by the continuum representation of sea ice in most climate models. This study makes use of an ocean Large Eddy Simulation (LES) model, coupled to cylindrical sea-ice floes, to investigate thermal and mechanical interactions between melt-induced submesoscale features and sea-ice floes, during summer conditions. We explore the sensitivity of sea-ice melt rates and upper-ocean turbulence properties to floe size, ice-ocean drag and surface winds. Under low wind conditions, upper ocean turbulence transports warm cyclonic filaments from the open ocean toward the center of the floes and enhance their basal melt. This heat transport is partially suppressed by trapping of ice within cold anticyclonic features. When winds are stronger, melt rates are enhanced by the decoupling of floes from the cold, melt-induced lens underneath sea ice. Distinct dynamical regimes emerge in which the influence of warm filaments on sea-ice melt is mitigated by the strength of ice-ocean coupling and eddy size relative to floe size. Simple scaling laws, which may help parameterize these processes in coarse continuum-based sea-ice models, successfully capture floe melt rates under these limiting regimes. |
format |
Article in Journal/Newspaper |
author |
Gupta, Mukund Thompson, Andrew F. |
spellingShingle |
Gupta, Mukund Thompson, Andrew F. Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales |
author_facet |
Gupta, Mukund Thompson, Andrew F. |
author_sort |
Gupta, Mukund |
title |
Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales |
title_short |
Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales |
title_full |
Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales |
title_fullStr |
Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales |
title_full_unstemmed |
Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales |
title_sort |
regimes of sea‐ice floe melt: ice‐ocean coupling at the submesoscales |
publisher |
American Geophysical Union |
publishDate |
2022 |
url |
https://authors.library.caltech.edu/116353/ https://authors.library.caltech.edu/116353/1/JGR%20Oceans%20-%202022%20-%20Gupta%20-%20Regimes%20of%20sea%E2%80%90ice%20floe%20melt%20%20Ice%E2%80%90ocean%20coupling%20at%20the%20submesoscales.pdf https://authors.library.caltech.edu/116353/2/2022jc018894-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/116353/3/2022jc018894-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/116353/4/2022jc018894-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/116353/5/2022jc018894-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/116353/6/2022jc018894-sup-0005-movie%20si-s04.mp4 https://authors.library.caltech.edu/116353/7/2022jc018894-sup-0006-movie%20si-s05.mp4 https://authors.library.caltech.edu/116353/8/2022jc018894-sup-0007-movie%20si-s06.mp4 https://authors.library.caltech.edu/116353/9/2022jc018894-sup-0008-movie%20si-s07.mp4 https://resolver.caltech.edu/CaltechAUTHORS:20220817-897491000 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
https://authors.library.caltech.edu/116353/1/JGR%20Oceans%20-%202022%20-%20Gupta%20-%20Regimes%20of%20sea%E2%80%90ice%20floe%20melt%20%20Ice%E2%80%90ocean%20coupling%20at%20the%20submesoscales.pdf https://authors.library.caltech.edu/116353/2/2022jc018894-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/116353/3/2022jc018894-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/116353/4/2022jc018894-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/116353/5/2022jc018894-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/116353/6/2022jc018894-sup-0005-movie%20si-s04.mp4 https://authors.library.caltech.edu/116353/7/2022jc018894-sup-0006-movie%20si-s05.mp4 https://authors.library.caltech.edu/116353/8/2022jc018894-sup-0007-movie%20si-s06.mp4 https://authors.library.caltech.edu/116353/9/2022jc018894-sup-0008-movie%20si-s07.mp4 Gupta, Mukund and Thompson, Andrew F. (2022) Regimes of sea‐ice floe melt: Ice‐ocean coupling at the submesoscales. Journal of Geophysical Research. Oceans . ISSN 2169-9275. doi:10.1029/2022jc018894. (In Press) https://resolver.caltech.edu/CaltechAUTHORS:20220817-897491000 <https://resolver.caltech.edu/CaltechAUTHORS:20220817-897491000> |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2022jc018894 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
9 |
_version_ |
1766189616062267392 |