Contrasting climate change in the two polar regions
The two polar regions have experienced remarkably different climatic changes in recent decades. The Arctic has seen a marked reduction in sea-ice extent throughout the year, with a peak during the autumn. A new record minimum extent occurred in 2007, which was 40% below the long-term climatological...
Published in: | Polar Research |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Norwegian Polar Institute
2009
|
Subjects: | |
Online Access: | https://polarresearch.net/index.php/polar/article/view/2818 https://doi.org/10.3402/polar.v28i2.6120 |
id |
ftjpolarres:oai:journals.openacademia.net:article/2818 |
---|---|
record_format |
openpolar |
spelling |
ftjpolarres:oai:journals.openacademia.net:article/2818 2023-05-15T14:01:21+02:00 Contrasting climate change in the two polar regions Turner, John Overland, Jim 2009-08-01 application/pdf https://polarresearch.net/index.php/polar/article/view/2818 https://doi.org/10.3402/polar.v28i2.6120 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2818/6445 https://polarresearch.net/index.php/polar/article/view/2818 doi:10.3402/polar.v28i2.6120 Copyright (c) 2018 Polar Research Polar Research; Vol. 28 No. 2 (2009); 146-164 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftjpolarres https://doi.org/10.3402/polar.v28i2.6120 2021-11-11T19:13:09Z The two polar regions have experienced remarkably different climatic changes in recent decades. The Arctic has seen a marked reduction in sea-ice extent throughout the year, with a peak during the autumn. A new record minimum extent occurred in 2007, which was 40% below the long-term climatological mean. In contrast, the extent of Antarctic sea ice has increased, with the greatest growth being in the autumn. There has been a large-scale warming across much of the Arctic, with a resultant loss of permafrost and a reduction in snow cover. The bulk of the Antarctic has experienced little change in surface temperature over the last 50 years, although a slight cooling has been evident around the coast of East Antarctica since about 1980, and recent research has pointed to a warming across West Antarctica. The exception is the Antarctic Peninsula, where there has been a winter (summer) season warming on the western (eastern) side. Many of the different changes observed between the two polar regions can be attributed to topographic factors and land/sea distribution. The location of the Arctic Ocean at high latitude, with the consequently high level of solar radiation received in summer, allows the icealbedo feedback mechanism to operate effectively. The Antarctic ozone hole has had a profound effect on the circulations of the high latitude ocean and atmosphere, isolating the continent and increasing the westerly winds over the Southern Ocean, especially during the summer and winter. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Arctic Arctic Ocean Climate change East Antarctica Ice permafrost Polar Research Sea ice Southern Ocean West Antarctica Polar Research (E-Journal) Arctic Antarctic Southern Ocean The Antarctic Arctic Ocean Antarctic Peninsula East Antarctica West Antarctica Polar Research 28 2 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
description |
The two polar regions have experienced remarkably different climatic changes in recent decades. The Arctic has seen a marked reduction in sea-ice extent throughout the year, with a peak during the autumn. A new record minimum extent occurred in 2007, which was 40% below the long-term climatological mean. In contrast, the extent of Antarctic sea ice has increased, with the greatest growth being in the autumn. There has been a large-scale warming across much of the Arctic, with a resultant loss of permafrost and a reduction in snow cover. The bulk of the Antarctic has experienced little change in surface temperature over the last 50 years, although a slight cooling has been evident around the coast of East Antarctica since about 1980, and recent research has pointed to a warming across West Antarctica. The exception is the Antarctic Peninsula, where there has been a winter (summer) season warming on the western (eastern) side. Many of the different changes observed between the two polar regions can be attributed to topographic factors and land/sea distribution. The location of the Arctic Ocean at high latitude, with the consequently high level of solar radiation received in summer, allows the icealbedo feedback mechanism to operate effectively. The Antarctic ozone hole has had a profound effect on the circulations of the high latitude ocean and atmosphere, isolating the continent and increasing the westerly winds over the Southern Ocean, especially during the summer and winter. |
format |
Article in Journal/Newspaper |
author |
Turner, John Overland, Jim |
spellingShingle |
Turner, John Overland, Jim Contrasting climate change in the two polar regions |
author_facet |
Turner, John Overland, Jim |
author_sort |
Turner, John |
title |
Contrasting climate change in the two polar regions |
title_short |
Contrasting climate change in the two polar regions |
title_full |
Contrasting climate change in the two polar regions |
title_fullStr |
Contrasting climate change in the two polar regions |
title_full_unstemmed |
Contrasting climate change in the two polar regions |
title_sort |
contrasting climate change in the two polar regions |
publisher |
Norwegian Polar Institute |
publishDate |
2009 |
url |
https://polarresearch.net/index.php/polar/article/view/2818 https://doi.org/10.3402/polar.v28i2.6120 |
geographic |
Arctic Antarctic Southern Ocean The Antarctic Arctic Ocean Antarctic Peninsula East Antarctica West Antarctica |
geographic_facet |
Arctic Antarctic Southern Ocean The Antarctic Arctic Ocean Antarctic Peninsula East Antarctica West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Arctic Arctic Ocean Climate change East Antarctica Ice permafrost Polar Research Sea ice Southern Ocean West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Arctic Arctic Ocean Climate change East Antarctica Ice permafrost Polar Research Sea ice Southern Ocean West Antarctica |
op_source |
Polar Research; Vol. 28 No. 2 (2009); 146-164 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2818/6445 https://polarresearch.net/index.php/polar/article/view/2818 doi:10.3402/polar.v28i2.6120 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v28i2.6120 |
container_title |
Polar Research |
container_volume |
28 |
container_issue |
2 |
_version_ |
1766271090233966592 |