Sea Ice Formation in a Coupled Climate Model Including Grease Ice

Abstract Sea ice formation processes occur on subgrid scales, and the detailed physics describing the processes are therefore not generally represented in climate models. One likely consequence of this is the premature closing of areas of open water in model simulations, which may result in a misrep...

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Autores principales:	Shona Mackie, Patricia J. Langhorne, Harold D. B. S. Heorton, Inga J. Smith, Daniel L. Feltham, David Schroeder
Formato:	article
Lenguaje:	EN
Publicado:	American Geophysical Union (AGU) 2020
Materias:	sea ice climate modeling Arctic HadGEM3‐GC3.1 polar Antarctic Physical geography GB3-5030 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/b5bd59577d3240cda0ece0844c5e07cd
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spelling	oai:doaj.org-article:b5bd59577d3240cda0ece0844c5e07cd2021-11-15T14:20:27ZSea Ice Formation in a Coupled Climate Model Including Grease Ice1942-246610.1029/2020MS002103https://doaj.org/article/b5bd59577d3240cda0ece0844c5e07cd2020-08-01T00:00:00Zhttps://doi.org/10.1029/2020MS002103https://doaj.org/toc/1942-2466Abstract Sea ice formation processes occur on subgrid scales, and the detailed physics describing the processes are therefore not generally represented in climate models. One likely consequence of this is the premature closing of areas of open water in model simulations, which may result in a misrepresentation of heat and gas exchange between the ocean and atmosphere. This work demonstrates the implementation of a more realistic model of sea ice formation, introducing grease ice as a wind and oceanic stress‐dependent intermediary state between water and new sea ice. We use the fully coupled land‐atmosphere‐ocean‐sea ice model, HadGEM3‐GC3.1 and perform a three‐member ensemble with the new grease ice scheme from 1964 to 2013. Comparing our sea ice results with the existing ensemble without grease ice formation shows an increase in sea ice thickness and volume in the Arctic. In the Antarctic, including grease ice processes results in large local changes to both simulated sea ice concentration and thickness, but no change to the total area or volume.Shona MackiePatricia J. LanghorneHarold D. B. S. HeortonInga J. SmithDaniel L. FelthamDavid SchroederAmerican Geophysical Union (AGU)articlesea iceclimate modelingArcticHadGEM3‐GC3.1polarAntarcticPhysical geographyGB3-5030OceanographyGC1-1581ENJournal of Advances in Modeling Earth Systems, Vol 12, Iss 8, Pp n/a-n/a (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	sea ice climate modeling Arctic HadGEM3‐GC3.1 polar Antarctic Physical geography GB3-5030 Oceanography GC1-1581
spellingShingle	sea ice climate modeling Arctic HadGEM3‐GC3.1 polar Antarctic Physical geography GB3-5030 Oceanography GC1-1581 Shona Mackie Patricia J. Langhorne Harold D. B. S. Heorton Inga J. Smith Daniel L. Feltham David Schroeder Sea Ice Formation in a Coupled Climate Model Including Grease Ice
description	Abstract Sea ice formation processes occur on subgrid scales, and the detailed physics describing the processes are therefore not generally represented in climate models. One likely consequence of this is the premature closing of areas of open water in model simulations, which may result in a misrepresentation of heat and gas exchange between the ocean and atmosphere. This work demonstrates the implementation of a more realistic model of sea ice formation, introducing grease ice as a wind and oceanic stress‐dependent intermediary state between water and new sea ice. We use the fully coupled land‐atmosphere‐ocean‐sea ice model, HadGEM3‐GC3.1 and perform a three‐member ensemble with the new grease ice scheme from 1964 to 2013. Comparing our sea ice results with the existing ensemble without grease ice formation shows an increase in sea ice thickness and volume in the Arctic. In the Antarctic, including grease ice processes results in large local changes to both simulated sea ice concentration and thickness, but no change to the total area or volume.
format	article
author	Shona Mackie Patricia J. Langhorne Harold D. B. S. Heorton Inga J. Smith Daniel L. Feltham David Schroeder
author_facet	Shona Mackie Patricia J. Langhorne Harold D. B. S. Heorton Inga J. Smith Daniel L. Feltham David Schroeder
author_sort	Shona Mackie
title	Sea Ice Formation in a Coupled Climate Model Including Grease Ice
title_short	Sea Ice Formation in a Coupled Climate Model Including Grease Ice
title_full	Sea Ice Formation in a Coupled Climate Model Including Grease Ice
title_fullStr	Sea Ice Formation in a Coupled Climate Model Including Grease Ice
title_full_unstemmed	Sea Ice Formation in a Coupled Climate Model Including Grease Ice
title_sort	sea ice formation in a coupled climate model including grease ice
publisher	American Geophysical Union (AGU)
publishDate	2020
url	https://doaj.org/article/b5bd59577d3240cda0ece0844c5e07cd
work_keys_str_mv	AT shonamackie seaiceformationinacoupledclimatemodelincludinggreaseice AT patriciajlanghorne seaiceformationinacoupledclimatemodelincludinggreaseice AT harolddbsheorton seaiceformationinacoupledclimatemodelincludinggreaseice AT ingajsmith seaiceformationinacoupledclimatemodelincludinggreaseice AT daniellfeltham seaiceformationinacoupledclimatemodelincludinggreaseice AT davidschroeder seaiceformationinacoupledclimatemodelincludinggreaseice
_version_	1718428398120861696

Sea Ice Formation in a Coupled Climate Model Including Grease Ice

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