Tropical teleconnection impacts on Antarctic climate changes
Over the modern satellite era, substantial climatic changes have been observed in the Antarctic, including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-wide expansion of sea ice, followed by a more recent rapid loss. Although these changes, featuring strong zonal asymm...
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ftcdlib:oai:escholarship.org/ark:/13030/qt2hw4m5pb 2023-05-15T14:01:11+02:00 Tropical teleconnection impacts on Antarctic climate changes Li, X Cai, W Meehl, GA Chen, D Yuan, X Raphael, M Holland, DM Ding, Q Fogt, RL Markle, BR Wang, G Bromwich, DH Turner, J Xie, SP Steig, EJ Gille, ST Xiao, C Wu, B Lazzara, MA Chen, X Stammerjohn, S Holland, PR Holland, MM Cheng, X Price, SF Wang, Z Bitz, CM Shi, J Gerber, EP Liang, X Goosse, H Yoo, C Ding, M Geng, L Xin, M Li, C Dou, T Liu, C Sun, W Wang, X Song, C 680 - 698 2021-10-01 https://escholarship.org/uc/item/2hw4m5pb unknown eScholarship, University of California qt2hw4m5pb https://escholarship.org/uc/item/2hw4m5pb public Nature Reviews Earth and Environment, vol 2, iss 10 article 2021 ftcdlib 2021-11-08T18:17:04Z Over the modern satellite era, substantial climatic changes have been observed in the Antarctic, including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-wide expansion of sea ice, followed by a more recent rapid loss. Although these changes, featuring strong zonal asymmetry, are partially influenced by increasing greenhouse gas emissions and stratospheric ozone depletion, tropical–polar teleconnections are believed to have a role through Rossby wave dynamics. In this Review, we synthesize understanding of tropical teleconnections to the Southern Hemisphere extratropics arising from the El Niño–Southern Oscillation, Interdecadal Pacific Oscillation and Atlantic Multidecadal Oscillation, focusing on the mechanisms and long-term climatic impacts. These teleconnections have contributed to observed Antarctic and Southern Ocean changes, including regional rapid surface warming, pre-2015 sea ice expansion and its sudden reduction thereafter, changes in ocean heat content and accelerated thinning of most of the Antarctic ice sheet. However, due to limited observations and inherent model biases, uncertainties remain in understanding and assessing the importance of these teleconnections versus those arising from greenhouse gases, ozone recovery and internal variability. Sustained pan-Antarctic efforts towards long-term observations, and more realistic dynamics and parameterizations in high-resolution climate models, offer opportunities to reduce these uncertainties. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Sea ice Southern Ocean University of California: eScholarship Antarctic Pacific Southern Ocean The Antarctic |
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University of California: eScholarship |
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description |
Over the modern satellite era, substantial climatic changes have been observed in the Antarctic, including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-wide expansion of sea ice, followed by a more recent rapid loss. Although these changes, featuring strong zonal asymmetry, are partially influenced by increasing greenhouse gas emissions and stratospheric ozone depletion, tropical–polar teleconnections are believed to have a role through Rossby wave dynamics. In this Review, we synthesize understanding of tropical teleconnections to the Southern Hemisphere extratropics arising from the El Niño–Southern Oscillation, Interdecadal Pacific Oscillation and Atlantic Multidecadal Oscillation, focusing on the mechanisms and long-term climatic impacts. These teleconnections have contributed to observed Antarctic and Southern Ocean changes, including regional rapid surface warming, pre-2015 sea ice expansion and its sudden reduction thereafter, changes in ocean heat content and accelerated thinning of most of the Antarctic ice sheet. However, due to limited observations and inherent model biases, uncertainties remain in understanding and assessing the importance of these teleconnections versus those arising from greenhouse gases, ozone recovery and internal variability. Sustained pan-Antarctic efforts towards long-term observations, and more realistic dynamics and parameterizations in high-resolution climate models, offer opportunities to reduce these uncertainties. |
format |
Article in Journal/Newspaper |
author |
Li, X Cai, W Meehl, GA Chen, D Yuan, X Raphael, M Holland, DM Ding, Q Fogt, RL Markle, BR Wang, G Bromwich, DH Turner, J Xie, SP Steig, EJ Gille, ST Xiao, C Wu, B Lazzara, MA Chen, X Stammerjohn, S Holland, PR Holland, MM Cheng, X Price, SF Wang, Z Bitz, CM Shi, J Gerber, EP Liang, X Goosse, H Yoo, C Ding, M Geng, L Xin, M Li, C Dou, T Liu, C Sun, W Wang, X Song, C |
spellingShingle |
Li, X Cai, W Meehl, GA Chen, D Yuan, X Raphael, M Holland, DM Ding, Q Fogt, RL Markle, BR Wang, G Bromwich, DH Turner, J Xie, SP Steig, EJ Gille, ST Xiao, C Wu, B Lazzara, MA Chen, X Stammerjohn, S Holland, PR Holland, MM Cheng, X Price, SF Wang, Z Bitz, CM Shi, J Gerber, EP Liang, X Goosse, H Yoo, C Ding, M Geng, L Xin, M Li, C Dou, T Liu, C Sun, W Wang, X Song, C Tropical teleconnection impacts on Antarctic climate changes |
author_facet |
Li, X Cai, W Meehl, GA Chen, D Yuan, X Raphael, M Holland, DM Ding, Q Fogt, RL Markle, BR Wang, G Bromwich, DH Turner, J Xie, SP Steig, EJ Gille, ST Xiao, C Wu, B Lazzara, MA Chen, X Stammerjohn, S Holland, PR Holland, MM Cheng, X Price, SF Wang, Z Bitz, CM Shi, J Gerber, EP Liang, X Goosse, H Yoo, C Ding, M Geng, L Xin, M Li, C Dou, T Liu, C Sun, W Wang, X Song, C |
author_sort |
Li, X |
title |
Tropical teleconnection impacts on Antarctic climate changes |
title_short |
Tropical teleconnection impacts on Antarctic climate changes |
title_full |
Tropical teleconnection impacts on Antarctic climate changes |
title_fullStr |
Tropical teleconnection impacts on Antarctic climate changes |
title_full_unstemmed |
Tropical teleconnection impacts on Antarctic climate changes |
title_sort |
tropical teleconnection impacts on antarctic climate changes |
publisher |
eScholarship, University of California |
publishDate |
2021 |
url |
https://escholarship.org/uc/item/2hw4m5pb |
op_coverage |
680 - 698 |
geographic |
Antarctic Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
op_source |
Nature Reviews Earth and Environment, vol 2, iss 10 |
op_relation |
qt2hw4m5pb https://escholarship.org/uc/item/2hw4m5pb |
op_rights |
public |
_version_ |
1766270788039606272 |