Response of an ocean-atmosphere climate model to Milankovic forcing
There is considerable evidence in support of Milankovic's theory that variations in high-latitude summer insolation caused by Earth orbital variations are the cause of the Pleistocene ice cycles. The enigmatic discrepancy between the spectra of Milankovic forcing and of Pleistocene climate vari...
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ftdoajarticles:oai:doaj.org/article:e53075b4ba8b490fb683a32a8a4a061a 2023-05-15T18:18:16+02:00 Response of an ocean-atmosphere climate model to Milankovic forcing E. S. Posmentier 1994-01-01T00:00:00Z https://doaj.org/article/e53075b4ba8b490fb683a32a8a4a061a EN eng Copernicus Publications http://www.nonlin-processes-geophys.net/1/26/1994/npg-1-26-1994.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 1023-5809 1607-7946 https://doaj.org/article/e53075b4ba8b490fb683a32a8a4a061a Nonlinear Processes in Geophysics, Vol 1, Iss 1, Pp 26-30 (1994) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 1994 ftdoajarticles 2022-12-31T02:17:20Z There is considerable evidence in support of Milankovic's theory that variations in high-latitude summer insolation caused by Earth orbital variations are the cause of the Pleistocene ice cycles. The enigmatic discrepancy between the spectra of Milankovic forcing and of Pleistocene climate variations is believed to be resolved by the slow, nonlinear response of ice sheets to changes in solar seasonality. An experiment with a preliminary version of a 14-region atmosphere/snow/upper ocean climate model demonstrates that the response of the ocean-atmosphere system alone to Milankovic forcing is capable of driving ice cycles with the observed spectrum. This occurs because of the highly nonlinear response of both the thermal seasons and the annual mean temperature to solar seasons, which is caused in turn by the highly nonlinear feedback between temperature and snow and sea ice. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 E. S. Posmentier Response of an ocean-atmosphere climate model to Milankovic forcing |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
There is considerable evidence in support of Milankovic's theory that variations in high-latitude summer insolation caused by Earth orbital variations are the cause of the Pleistocene ice cycles. The enigmatic discrepancy between the spectra of Milankovic forcing and of Pleistocene climate variations is believed to be resolved by the slow, nonlinear response of ice sheets to changes in solar seasonality. An experiment with a preliminary version of a 14-region atmosphere/snow/upper ocean climate model demonstrates that the response of the ocean-atmosphere system alone to Milankovic forcing is capable of driving ice cycles with the observed spectrum. This occurs because of the highly nonlinear response of both the thermal seasons and the annual mean temperature to solar seasons, which is caused in turn by the highly nonlinear feedback between temperature and snow and sea ice. |
format |
Article in Journal/Newspaper |
author |
E. S. Posmentier |
author_facet |
E. S. Posmentier |
author_sort |
E. S. Posmentier |
title |
Response of an ocean-atmosphere climate model to Milankovic forcing |
title_short |
Response of an ocean-atmosphere climate model to Milankovic forcing |
title_full |
Response of an ocean-atmosphere climate model to Milankovic forcing |
title_fullStr |
Response of an ocean-atmosphere climate model to Milankovic forcing |
title_full_unstemmed |
Response of an ocean-atmosphere climate model to Milankovic forcing |
title_sort |
response of an ocean-atmosphere climate model to milankovic forcing |
publisher |
Copernicus Publications |
publishDate |
1994 |
url |
https://doaj.org/article/e53075b4ba8b490fb683a32a8a4a061a |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Nonlinear Processes in Geophysics, Vol 1, Iss 1, Pp 26-30 (1994) |
op_relation |
http://www.nonlin-processes-geophys.net/1/26/1994/npg-1-26-1994.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 1023-5809 1607-7946 https://doaj.org/article/e53075b4ba8b490fb683a32a8a4a061a |
_version_ |
1766194796628541440 |