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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Geophysical Union (AGU)
2020-08-01
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| Series: | Journal of Advances in Modeling Earth Systems |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2020MS002103 |
| _version_ | 1818927187151028224 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-20T03:09:01Z |
| format | Article |
| id | doaj.art-b5bd59577d3240cda0ece0844c5e07cd |
| institution | Directory Open Access Journal |
| issn | 1942-2466 |
| language | English |
| last_indexed | 2024-12-20T03:09:01Z |
| publishDate | 2020-08-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Journal of Advances in Modeling Earth Systems |
| spelling | doaj.art-b5bd59577d3240cda0ece0844c5e07cd2022-12-21T19:55:31ZengAmerican Geophysical Union (AGU)Journal of Advances in Modeling Earth Systems1942-24662020-08-01128n/an/a10.1029/2020MS002103Sea Ice Formation in a Coupled Climate Model Including Grease IceShona Mackie0Patricia J. Langhorne1Harold D. B. S. Heorton2Inga J. Smith3Daniel L. Feltham4David Schroeder5Department of Physics University of Otago Dunedin New ZealandDepartment of Physics University of Otago Dunedin New ZealandDepartment of Earth Science University College London London UKDepartment of Physics University of Otago Dunedin New ZealandDepartment of Meteorology University of Reading Reading UKDepartment of Meteorology University of Reading Reading UKAbstract 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.https://doi.org/10.1029/2020MS002103sea iceclimate modelingArcticHadGEM3‐GC3.1polarAntarctic |
| spellingShingle | 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 Journal of Advances in Modeling Earth Systems sea ice climate modeling Arctic HadGEM3‐GC3.1 polar Antarctic |
| title | 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_short | Sea Ice Formation in a Coupled Climate Model Including Grease Ice |
| title_sort | sea ice formation in a coupled climate model including grease ice |
| topic | sea ice climate modeling Arctic HadGEM3‐GC3.1 polar Antarctic |
| url | https://doi.org/10.1029/2020MS002103 |
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