Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes
Abstract This study re‐evaluated simulated Antarctic sea‐ice variability and its teleconnections in a NASA Goddard Institute for Space Studies (GISS) coupled global climate model (CGCM) with improved sea‐ice and ocean processes. With the improvements to the parameterizations of sea‐ice dynamics and...
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crwiley:10.1002/joc.1040 2024-06-02T07:57:20+00:00 Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes Liu, Jiping Yuan, Xiaojun Martinson, Douglas G. Rind, David 2004 http://dx.doi.org/10.1002/joc.1040 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1040 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1040 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 24, issue 7, page 841-852 ISSN 0899-8418 1097-0088 journal-article 2004 crwiley https://doi.org/10.1002/joc.1040 2024-05-03T11:42:51Z Abstract This study re‐evaluated simulated Antarctic sea‐ice variability and its teleconnections in a NASA Goddard Institute for Space Studies (GISS) coupled global climate model (CGCM) with improved sea‐ice and ocean processes. With the improvements to the parameterizations of sea‐ice dynamics and thermodynamics and of sub‐grid‐scale ocean processes, the new version of the GISS/CGCM does indeed do a better job in the representations of the local/regional ice–ocean interactions with regard to (1) the seasonal distributions of the Antarctic sea‐ice edges (SIE), and (2) the vertical temperature and salinity structure in the upper Southern Ocean and surface air temperature (SAT) climatology in the southern high latitudes compared with the control version. However, these encouraging local/regional improvements do not extend to the simulations of the polar and extrapolar climate teleconnections. There is no obvious change to the simulations of the dominant spatial covarying patterns of the SAT variability on either the regional (southern high latitudes) or global scales. The simulated teleconnections between Antarctic SIE and global SAT still show the weak El Niño–southern oscillation like correlation pattern in the eastern tropical Pacific, though the new version generates a stronger tropical Indian component. Some dominant observed teleconnection patterns in the western extreme of the tropical Pacific and over the tropical continents (in‐phase relationship between tropical South America and Africa) are still not well represented or are missed in the Antarctic SIE and global SAT lead/lag correlation maps and the empirical orthogonal function analysis on those correlation maps. The possible causes of the weak teleconnections in the improved GISS/CGCM are briefly discussed. Copyright © 2004 Royal Meteorological Society Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Wiley Online Library Antarctic Indian Pacific Southern Ocean The Antarctic International Journal of Climatology 24 7 841 852 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract This study re‐evaluated simulated Antarctic sea‐ice variability and its teleconnections in a NASA Goddard Institute for Space Studies (GISS) coupled global climate model (CGCM) with improved sea‐ice and ocean processes. With the improvements to the parameterizations of sea‐ice dynamics and thermodynamics and of sub‐grid‐scale ocean processes, the new version of the GISS/CGCM does indeed do a better job in the representations of the local/regional ice–ocean interactions with regard to (1) the seasonal distributions of the Antarctic sea‐ice edges (SIE), and (2) the vertical temperature and salinity structure in the upper Southern Ocean and surface air temperature (SAT) climatology in the southern high latitudes compared with the control version. However, these encouraging local/regional improvements do not extend to the simulations of the polar and extrapolar climate teleconnections. There is no obvious change to the simulations of the dominant spatial covarying patterns of the SAT variability on either the regional (southern high latitudes) or global scales. The simulated teleconnections between Antarctic SIE and global SAT still show the weak El Niño–southern oscillation like correlation pattern in the eastern tropical Pacific, though the new version generates a stronger tropical Indian component. Some dominant observed teleconnection patterns in the western extreme of the tropical Pacific and over the tropical continents (in‐phase relationship between tropical South America and Africa) are still not well represented or are missed in the Antarctic SIE and global SAT lead/lag correlation maps and the empirical orthogonal function analysis on those correlation maps. The possible causes of the weak teleconnections in the improved GISS/CGCM are briefly discussed. Copyright © 2004 Royal Meteorological Society |
format |
Article in Journal/Newspaper |
author |
Liu, Jiping Yuan, Xiaojun Martinson, Douglas G. Rind, David |
spellingShingle |
Liu, Jiping Yuan, Xiaojun Martinson, Douglas G. Rind, David Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes |
author_facet |
Liu, Jiping Yuan, Xiaojun Martinson, Douglas G. Rind, David |
author_sort |
Liu, Jiping |
title |
Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes |
title_short |
Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes |
title_full |
Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes |
title_fullStr |
Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes |
title_full_unstemmed |
Re‐evaluating Antarctic sea‐ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes |
title_sort |
re‐evaluating antarctic sea‐ice variability and its teleconnections in a giss global climate model with improved sea ice and ocean processes |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1002/joc.1040 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1040 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1040 |
geographic |
Antarctic Indian Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Indian Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
International Journal of Climatology volume 24, issue 7, page 841-852 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.1040 |
container_title |
International Journal of Climatology |
container_volume |
24 |
container_issue |
7 |
container_start_page |
841 |
op_container_end_page |
852 |
_version_ |
1800740481264517120 |