How reversible is sea ice loss?
It is well accepted that increasing atmospheric CO2 results in global warming, leading to a decline in polar sea ice area. Here, the specific question of whether there is a tipping point in the sea ice cover is investigated. The global climate model HadCM3 is used to map the trajectory of sea ice ar...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2012
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Online Access: | https://doi.org/10.5194/tc-6-193-2012 http://www.the-cryosphere.net/6/193/2012/tc-6-193-2012.pdf https://doaj.org/article/461138d84f7d4780a8297452b31f75c8 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:461138d84f7d4780a8297452b31f75c8 2023-05-15T13:47:17+02:00 How reversible is sea ice loss? J. K. Ridley J. A. Lowe H. T. Hewitt 2012-02-01 https://doi.org/10.5194/tc-6-193-2012 http://www.the-cryosphere.net/6/193/2012/tc-6-193-2012.pdf https://doaj.org/article/461138d84f7d4780a8297452b31f75c8 en eng Copernicus Publications doi:10.5194/tc-6-193-2012 1994-0416 1994-0424 http://www.the-cryosphere.net/6/193/2012/tc-6-193-2012.pdf https://doaj.org/article/461138d84f7d4780a8297452b31f75c8 undefined The Cryosphere, Vol 6, Iss 1, Pp 193-198 (2012) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2012 fttriple https://doi.org/10.5194/tc-6-193-2012 2023-01-22T19:28:45Z It is well accepted that increasing atmospheric CO2 results in global warming, leading to a decline in polar sea ice area. Here, the specific question of whether there is a tipping point in the sea ice cover is investigated. The global climate model HadCM3 is used to map the trajectory of sea ice area under idealised scenarios. The atmospheric CO2 is first ramped up to four times pre-industrial levels (4 × CO2), then ramped down to pre-industrial levels. We also examine the impact of stabilising climate at 4 × CO2 prior to ramping CO2 down to pre-industrial levels. Against global mean temperature, Arctic sea ice area is reversible, while the Antarctic sea ice shows some asymmetric behaviour – its rate of change slower, with falling temperatures, than its rate of change with rising temperatures. However, we show that the asymmetric behaviour is driven by hemispherical differences in temperature change between transient and stabilisation periods. We find no irreversible behaviour in the sea ice cover. Article in Journal/Newspaper Antarc* Antarctic Arctic Global warming Sea ice The Cryosphere Unknown Antarctic Arctic The Antarctic The Cryosphere 6 1 193 198 |
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English |
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geo envir J. K. Ridley J. A. Lowe H. T. Hewitt How reversible is sea ice loss? |
topic_facet |
geo envir |
description |
It is well accepted that increasing atmospheric CO2 results in global warming, leading to a decline in polar sea ice area. Here, the specific question of whether there is a tipping point in the sea ice cover is investigated. The global climate model HadCM3 is used to map the trajectory of sea ice area under idealised scenarios. The atmospheric CO2 is first ramped up to four times pre-industrial levels (4 × CO2), then ramped down to pre-industrial levels. We also examine the impact of stabilising climate at 4 × CO2 prior to ramping CO2 down to pre-industrial levels. Against global mean temperature, Arctic sea ice area is reversible, while the Antarctic sea ice shows some asymmetric behaviour – its rate of change slower, with falling temperatures, than its rate of change with rising temperatures. However, we show that the asymmetric behaviour is driven by hemispherical differences in temperature change between transient and stabilisation periods. We find no irreversible behaviour in the sea ice cover. |
format |
Article in Journal/Newspaper |
author |
J. K. Ridley J. A. Lowe H. T. Hewitt |
author_facet |
J. K. Ridley J. A. Lowe H. T. Hewitt |
author_sort |
J. K. Ridley |
title |
How reversible is sea ice loss? |
title_short |
How reversible is sea ice loss? |
title_full |
How reversible is sea ice loss? |
title_fullStr |
How reversible is sea ice loss? |
title_full_unstemmed |
How reversible is sea ice loss? |
title_sort |
how reversible is sea ice loss? |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/tc-6-193-2012 http://www.the-cryosphere.net/6/193/2012/tc-6-193-2012.pdf https://doaj.org/article/461138d84f7d4780a8297452b31f75c8 |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Arctic Global warming Sea ice The Cryosphere |
genre_facet |
Antarc* Antarctic Arctic Global warming Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 6, Iss 1, Pp 193-198 (2012) |
op_relation |
doi:10.5194/tc-6-193-2012 1994-0416 1994-0424 http://www.the-cryosphere.net/6/193/2012/tc-6-193-2012.pdf https://doaj.org/article/461138d84f7d4780a8297452b31f75c8 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-6-193-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
1 |
container_start_page |
193 |
op_container_end_page |
198 |
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1766246856115879936 |