Rapid switch-like sea ice growth and land ice–sea ice hysteresis
[1] Rapid and extensive growth of sea ice cover was suggested to play a major role in the sea ice switch mechanism for the glacial cycles as well as on shorter millennial scales [Gildor and Tziperman, 2000]. This mechanism also predicts a hysteresis between sea ice and land ice, such that land ice g...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.145.7950 2023-05-15T18:16:03+02:00 Rapid switch-like sea ice growth and land ice–sea ice hysteresis Roiy Sayag Eli Tziperman Michael Ghil The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7950 http://www.atmos.ucla.edu/tcd/PREPRINTS/Paleoceanogr.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7950 http://www.atmos.ucla.edu/tcd/PREPRINTS/Paleoceanogr.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.atmos.ucla.edu/tcd/PREPRINTS/Paleoceanogr.pdf text ftciteseerx 2016-01-07T15:08:13Z [1] Rapid and extensive growth of sea ice cover was suggested to play a major role in the sea ice switch mechanism for the glacial cycles as well as on shorter millennial scales [Gildor and Tziperman, 2000]. This mechanism also predicts a hysteresis between sea ice and land ice, such that land ice grows when sea ice cover is small and withdraws when sea ice cover is more extensive. The switch-like sea ice growth and the hysteresis were previously demonstrated using a simple, highly idealized box model. In this work we demonstrate a switch-like sea ice behavior as well as the sea ice–land ice hysteresis using a coupled climate model that is continuous in the latitudinal dimension. It is shown that the switch-like sea ice growth occurs when the initial meridional atmospheric temperature gradient is not too strong. It is also shown that the meridional extent to which sea ice grows in a switch-like manner is not affected by the intensity of the thermohaline circulation, which does, however, influence the climate cooling that is needed to trigger such rapid sea ice growth. Text Sea ice Unknown |
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[1] Rapid and extensive growth of sea ice cover was suggested to play a major role in the sea ice switch mechanism for the glacial cycles as well as on shorter millennial scales [Gildor and Tziperman, 2000]. This mechanism also predicts a hysteresis between sea ice and land ice, such that land ice grows when sea ice cover is small and withdraws when sea ice cover is more extensive. The switch-like sea ice growth and the hysteresis were previously demonstrated using a simple, highly idealized box model. In this work we demonstrate a switch-like sea ice behavior as well as the sea ice–land ice hysteresis using a coupled climate model that is continuous in the latitudinal dimension. It is shown that the switch-like sea ice growth occurs when the initial meridional atmospheric temperature gradient is not too strong. It is also shown that the meridional extent to which sea ice grows in a switch-like manner is not affected by the intensity of the thermohaline circulation, which does, however, influence the climate cooling that is needed to trigger such rapid sea ice growth. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Roiy Sayag Eli Tziperman Michael Ghil |
spellingShingle |
Roiy Sayag Eli Tziperman Michael Ghil Rapid switch-like sea ice growth and land ice–sea ice hysteresis |
author_facet |
Roiy Sayag Eli Tziperman Michael Ghil |
author_sort |
Roiy Sayag |
title |
Rapid switch-like sea ice growth and land ice–sea ice hysteresis |
title_short |
Rapid switch-like sea ice growth and land ice–sea ice hysteresis |
title_full |
Rapid switch-like sea ice growth and land ice–sea ice hysteresis |
title_fullStr |
Rapid switch-like sea ice growth and land ice–sea ice hysteresis |
title_full_unstemmed |
Rapid switch-like sea ice growth and land ice–sea ice hysteresis |
title_sort |
rapid switch-like sea ice growth and land ice–sea ice hysteresis |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7950 http://www.atmos.ucla.edu/tcd/PREPRINTS/Paleoceanogr.pdf |
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Sea ice |
genre_facet |
Sea ice |
op_source |
http://www.atmos.ucla.edu/tcd/PREPRINTS/Paleoceanogr.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7950 http://www.atmos.ucla.edu/tcd/PREPRINTS/Paleoceanogr.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766189468042133504 |