Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system
We analyze two preindustrial experiments from the Community Earth System Model version 2 to characterize the impact of sea ice physics on differences in coastal sea ice production around Antarctica and the resulting impact on the ocean and atmosphere. The experiment in which sea ice is a more realis...
Published in: | Geophysical Research Letters |
---|---|
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2021GL094287 |
id |
ftncar:oai:drupal-site.org:articles_24765 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_24765 2024-04-14T08:04:15+00:00 Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system DuVivier, Alice K. (author) Holland, Marika M. (author) Landrum, Laura (author) Singh, H. A. (author) Bailey, David A. (author) Maroon, E. A. (author) 2021-09-20 https://doi.org/10.1029/2021GL094287 en eng Geophysical Research Letters--Geophys Res Lett--0094-8276--1944-8007 CESM2 Sea Ice thermodynamics sensitivity experiments--10.5065/bgt9-tz46 articles:24765 doi:10.1029/2021GL094287 ark:/85065/d71c219f Copyright 2021 American Geophysical Union. article Text 2021 ftncar https://doi.org/10.1029/2021GL094287 2024-03-21T18:00:26Z We analyze two preindustrial experiments from the Community Earth System Model version 2 to characterize the impact of sea ice physics on differences in coastal sea ice production around Antarctica and the resulting impact on the ocean and atmosphere. The experiment in which sea ice is a more realistic "mushy" mixture of solid ice and brine has a substantial increase in coastal sea ice frazil and snow ice production that is accompanied by decreasing bottom ice growth and increasing bottom melt. The more realistic "mushy" physics leads to an increase in water mass formation at denser water classes due primarily to surface ice processes. As a result, the subsurface ocean is denser, saltier, and there is an increase in Antarctic Bottom Water formation of similar to 0.5 Sv. For the atmosphere, "mushy" ice physics leads to decreased turbulent heat flux and low level cloud cover near the Antarctic coast. 1852977 80NSSC20K1289 Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic The Antarctic Geophysical Research Letters 48 18 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
We analyze two preindustrial experiments from the Community Earth System Model version 2 to characterize the impact of sea ice physics on differences in coastal sea ice production around Antarctica and the resulting impact on the ocean and atmosphere. The experiment in which sea ice is a more realistic "mushy" mixture of solid ice and brine has a substantial increase in coastal sea ice frazil and snow ice production that is accompanied by decreasing bottom ice growth and increasing bottom melt. The more realistic "mushy" physics leads to an increase in water mass formation at denser water classes due primarily to surface ice processes. As a result, the subsurface ocean is denser, saltier, and there is an increase in Antarctic Bottom Water formation of similar to 0.5 Sv. For the atmosphere, "mushy" ice physics leads to decreased turbulent heat flux and low level cloud cover near the Antarctic coast. 1852977 80NSSC20K1289 |
author2 |
DuVivier, Alice K. (author) Holland, Marika M. (author) Landrum, Laura (author) Singh, H. A. (author) Bailey, David A. (author) Maroon, E. A. (author) |
format |
Article in Journal/Newspaper |
title |
Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system |
spellingShingle |
Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system |
title_short |
Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system |
title_full |
Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system |
title_fullStr |
Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system |
title_full_unstemmed |
Impacts of sea ice mushy thermodynamics in the Antarctic on the coupled Earth system |
title_sort |
impacts of sea ice mushy thermodynamics in the antarctic on the coupled earth system |
publishDate |
2021 |
url |
https://doi.org/10.1029/2021GL094287 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_relation |
Geophysical Research Letters--Geophys Res Lett--0094-8276--1944-8007 CESM2 Sea Ice thermodynamics sensitivity experiments--10.5065/bgt9-tz46 articles:24765 doi:10.1029/2021GL094287 ark:/85065/d71c219f |
op_rights |
Copyright 2021 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2021GL094287 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
18 |
_version_ |
1796300675723821056 |