Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions
Sea ice features a variety of obstacles to the flow of air and ocean near its surface. The distribution of ridges on the ice bottom and top surfaces, as well as the edges of the floes, the ice surface roughness and the melt ponds edges interact with the exchanges of heat and momentum between the ice...
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ftzenodo:oai:zenodo.org:4545314 2023-06-06T11:51:15+02:00 Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions Sterlin, Jean Fichefet, Thierry Massonnet, François Vancoppenolle, Martin 2021-01-19 https://zenodo.org/record/4545314 https://doi.org/10.5281/zenodo.4545314 eng eng info:eu-repo/grantAgreement/EC/H2020/727862/ doi:10.5281/zenodo.4545313 https://zenodo.org/communities/applicate https://zenodo.org/record/4545314 https://doi.org/10.5281/zenodo.4545314 oai:zenodo.org:4545314 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Form Drag Sea-ice-ocean interactions Surface fluxes Sea Ice Model Ocean General Circulation Model Polar climate info:eu-repo/semantics/lecture presentation 2021 ftzenodo https://doi.org/10.5281/zenodo.454531410.5281/zenodo.4545313 2023-04-13T23:14:39Z Sea ice features a variety of obstacles to the flow of air and ocean near its surface. The distribution of ridges on the ice bottom and top surfaces, as well as the edges of the floes, the ice surface roughness and the melt ponds edges interact with the exchanges of heat and momentum between the ice and ocean and atmosphere systems. In most climate models, the surface fluxes of heat and momentum are estimated with bulk formulas, using a drag coefficient that reflects the surface roughness of the interface. Drag coefficients over sea ice are usually set to constant, which do not account for the variability of the ice surface roughness. However, drag coefficients can be estimated as a function the sea ice state (Tsamados et al, 2013). To study the effect of variable drag coefficients on the sea ice and its subsequent impact on the ocean surface, we have implemented the formalism of Tsamados et al (2013). We performed a first simulation with constant drag coefficients and a second with variable drag coefficients, using NEMO-LIM3 and a prescribed atmospheric state of the past decades. The differences between the two simulations allow us to formulate an initial assessment of the importance of variable drag coefficients over sea ice for the ocean surface in the Arctic. Conference Object Arctic Sea ice Zenodo Arctic |
institution |
Open Polar |
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Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Form Drag Sea-ice-ocean interactions Surface fluxes Sea Ice Model Ocean General Circulation Model Polar climate |
spellingShingle |
Form Drag Sea-ice-ocean interactions Surface fluxes Sea Ice Model Ocean General Circulation Model Polar climate Sterlin, Jean Fichefet, Thierry Massonnet, François Vancoppenolle, Martin Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions |
topic_facet |
Form Drag Sea-ice-ocean interactions Surface fluxes Sea Ice Model Ocean General Circulation Model Polar climate |
description |
Sea ice features a variety of obstacles to the flow of air and ocean near its surface. The distribution of ridges on the ice bottom and top surfaces, as well as the edges of the floes, the ice surface roughness and the melt ponds edges interact with the exchanges of heat and momentum between the ice and ocean and atmosphere systems. In most climate models, the surface fluxes of heat and momentum are estimated with bulk formulas, using a drag coefficient that reflects the surface roughness of the interface. Drag coefficients over sea ice are usually set to constant, which do not account for the variability of the ice surface roughness. However, drag coefficients can be estimated as a function the sea ice state (Tsamados et al, 2013). To study the effect of variable drag coefficients on the sea ice and its subsequent impact on the ocean surface, we have implemented the formalism of Tsamados et al (2013). We performed a first simulation with constant drag coefficients and a second with variable drag coefficients, using NEMO-LIM3 and a prescribed atmospheric state of the past decades. The differences between the two simulations allow us to formulate an initial assessment of the importance of variable drag coefficients over sea ice for the ocean surface in the Arctic. |
format |
Conference Object |
author |
Sterlin, Jean Fichefet, Thierry Massonnet, François Vancoppenolle, Martin |
author_facet |
Sterlin, Jean Fichefet, Thierry Massonnet, François Vancoppenolle, Martin |
author_sort |
Sterlin, Jean |
title |
Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions |
title_short |
Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions |
title_full |
Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions |
title_fullStr |
Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions |
title_full_unstemmed |
Role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions |
title_sort |
role of variable form drag coefficients over sea ice for the ocean surface layer in polar regions |
publishDate |
2021 |
url |
https://zenodo.org/record/4545314 https://doi.org/10.5281/zenodo.4545314 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/727862/ doi:10.5281/zenodo.4545313 https://zenodo.org/communities/applicate https://zenodo.org/record/4545314 https://doi.org/10.5281/zenodo.4545314 oai:zenodo.org:4545314 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.454531410.5281/zenodo.4545313 |
_version_ |
1767956965594497024 |