Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models
We assess the sea ice response to Southern Annular Mode (SAM) anomalies for pre-industrial control simulations from the Coupled Model Intercomparison Project (CMIP5). Consistent with work by Ferreira et al. (J Clim 28:1206-1226, 2015. doi:10.1175/JCLI-D-14-00313.1), the models generally simulate a t...
Published in: | Climate Dynamics |
---|---|
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://doi.org/10.1007/s00382-016-3424-9 |
id |
ftncar:oai:drupal-site.org:articles_21000 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_21000 2023-09-05T13:12:21+02:00 Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models Holland, Marika M. (author) Landrum, Laura (author) Kostov, Yavor (author) Marshall, John (author) 2017-09-28 https://doi.org/10.1007/s00382-016-3424-9 en eng Climate Dynamics--Clim Dyn--0930-7575--1432-0894 articles:21000 ark:/85065/d73b62n4 doi:10.1007/s00382-016-3424-9 Copyright 2017 Springer. article Text 2017 ftncar https://doi.org/10.1007/s00382-016-3424-9 2023-08-14T18:46:04Z We assess the sea ice response to Southern Annular Mode (SAM) anomalies for pre-industrial control simulations from the Coupled Model Intercomparison Project (CMIP5). Consistent with work by Ferreira et al. (J Clim 28:1206-1226, 2015. doi:10.1175/JCLI-D-14-00313.1), the models generally simulate a two-timescale response to positive SAM anomalies, with an initial increase in ice followed by an eventual sea ice decline. However, the models differ in the cross-over time at which the change in ice response occurs, in the overall magnitude of the response, and in the spatial distribution of the response. Late twentieth century Antarctic sea ice trends in CMIP5 simulations are related in part to different modeled responses to SAM variability acting on different time-varying transient SAM conditions. This explains a significant fraction of the spread in simulated late twentieth century southern hemisphere sea ice extent trends across the model simulations. Applying the modeled sea ice response to SAM variability but driven by the observed record of SAM suggests that variations in the austral summer SAM, which has exhibited a significant positive trend, have driven a modest sea ice decrease. However, additional work is needed to narrow the considerable model uncertainty in the climate response to SAM variability and its implications for 20th-21st century trends. Article in Journal/Newspaper Antarc* Antarctic Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Austral Ferreira ENVELOPE(-62.050,-62.050,-64.600,-64.600) Climate Dynamics 49 5-6 1813 1831 |
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 assess the sea ice response to Southern Annular Mode (SAM) anomalies for pre-industrial control simulations from the Coupled Model Intercomparison Project (CMIP5). Consistent with work by Ferreira et al. (J Clim 28:1206-1226, 2015. doi:10.1175/JCLI-D-14-00313.1), the models generally simulate a two-timescale response to positive SAM anomalies, with an initial increase in ice followed by an eventual sea ice decline. However, the models differ in the cross-over time at which the change in ice response occurs, in the overall magnitude of the response, and in the spatial distribution of the response. Late twentieth century Antarctic sea ice trends in CMIP5 simulations are related in part to different modeled responses to SAM variability acting on different time-varying transient SAM conditions. This explains a significant fraction of the spread in simulated late twentieth century southern hemisphere sea ice extent trends across the model simulations. Applying the modeled sea ice response to SAM variability but driven by the observed record of SAM suggests that variations in the austral summer SAM, which has exhibited a significant positive trend, have driven a modest sea ice decrease. However, additional work is needed to narrow the considerable model uncertainty in the climate response to SAM variability and its implications for 20th-21st century trends. |
author2 |
Holland, Marika M. (author) Landrum, Laura (author) Kostov, Yavor (author) Marshall, John (author) |
format |
Article in Journal/Newspaper |
title |
Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models |
spellingShingle |
Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models |
title_short |
Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models |
title_full |
Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models |
title_fullStr |
Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models |
title_full_unstemmed |
Sensitivity of Antarctic sea ice to the Southern Annular Mode in coupled climate models |
title_sort |
sensitivity of antarctic sea ice to the southern annular mode in coupled climate models |
publishDate |
2017 |
url |
https://doi.org/10.1007/s00382-016-3424-9 |
long_lat |
ENVELOPE(-62.050,-62.050,-64.600,-64.600) |
geographic |
Antarctic Austral Ferreira |
geographic_facet |
Antarctic Austral Ferreira |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_relation |
Climate Dynamics--Clim Dyn--0930-7575--1432-0894 articles:21000 ark:/85065/d73b62n4 doi:10.1007/s00382-016-3424-9 |
op_rights |
Copyright 2017 Springer. |
op_doi |
https://doi.org/10.1007/s00382-016-3424-9 |
container_title |
Climate Dynamics |
container_volume |
49 |
container_issue |
5-6 |
container_start_page |
1813 |
op_container_end_page |
1831 |
_version_ |
1776199947230642176 |