A minimum thermodynamic model for the bipolar seesaw
The simplest possible model is proposed to explain a large fraction of the millennial climate variability measured in the isotopic composition of Antarctic ice cores. The model results from the classic bipolar seesaw by coupling it to a heat reservoir. In this “thermal bipolar seesaw” the heat reser...
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American Geophysical Union
2003
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Online Access: | https://boris.unibe.ch/158212/1/stocker03po.pdf https://boris.unibe.ch/158212/ |
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ftunivbern:oai:boris.unibe.ch:158212 2023-08-20T04:01:18+02:00 A minimum thermodynamic model for the bipolar seesaw Stocker, Thomas F. Johnson, Sigfùs J. 2003 application/pdf https://boris.unibe.ch/158212/1/stocker03po.pdf https://boris.unibe.ch/158212/ eng eng American Geophysical Union https://boris.unibe.ch/158212/ info:eu-repo/semantics/openAccess Stocker, Thomas F.; Johnson, Sigfùs J. (2003). A minimum thermodynamic model for the bipolar seesaw. Paleoceanography, 18(4), n/a-n/a. American Geophysical Union 10.1029/2003PA000920 <http://dx.doi.org/10.1029/2003PA000920> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2003 ftunivbern https://doi.org/10.1029/2003PA000920 2023-07-31T22:07:57Z The simplest possible model is proposed to explain a large fraction of the millennial climate variability measured in the isotopic composition of Antarctic ice cores. The model results from the classic bipolar seesaw by coupling it to a heat reservoir. In this “thermal bipolar seesaw” the heat reservoir convolves northern time signals with a characteristic timescale. Applying the model to the data of GRIP and Byrd, we demonstrate that maximum correlation can be obtained using a timescale of about 1000–1500 years. Higher correlations are obtained by first filtering out the long-term variability which is due to astronomical and greenhouse gas forcing and not part of the thermal bipolar seesaw. The model resolves the apparent confusion whether northern and southern climate records are in or out of phase, synchronous, or time lagged. Article in Journal/Newspaper Antarc* Antarctic BORIS (Bern Open Repository and Information System, University of Bern) Antarctic Byrd Paleoceanography 18 4 n/a n/a |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Stocker, Thomas F. Johnson, Sigfùs J. A minimum thermodynamic model for the bipolar seesaw |
topic_facet |
530 Physics |
description |
The simplest possible model is proposed to explain a large fraction of the millennial climate variability measured in the isotopic composition of Antarctic ice cores. The model results from the classic bipolar seesaw by coupling it to a heat reservoir. In this “thermal bipolar seesaw” the heat reservoir convolves northern time signals with a characteristic timescale. Applying the model to the data of GRIP and Byrd, we demonstrate that maximum correlation can be obtained using a timescale of about 1000–1500 years. Higher correlations are obtained by first filtering out the long-term variability which is due to astronomical and greenhouse gas forcing and not part of the thermal bipolar seesaw. The model resolves the apparent confusion whether northern and southern climate records are in or out of phase, synchronous, or time lagged. |
format |
Article in Journal/Newspaper |
author |
Stocker, Thomas F. Johnson, Sigfùs J. |
author_facet |
Stocker, Thomas F. Johnson, Sigfùs J. |
author_sort |
Stocker, Thomas F. |
title |
A minimum thermodynamic model for the bipolar seesaw |
title_short |
A minimum thermodynamic model for the bipolar seesaw |
title_full |
A minimum thermodynamic model for the bipolar seesaw |
title_fullStr |
A minimum thermodynamic model for the bipolar seesaw |
title_full_unstemmed |
A minimum thermodynamic model for the bipolar seesaw |
title_sort |
minimum thermodynamic model for the bipolar seesaw |
publisher |
American Geophysical Union |
publishDate |
2003 |
url |
https://boris.unibe.ch/158212/1/stocker03po.pdf https://boris.unibe.ch/158212/ |
geographic |
Antarctic Byrd |
geographic_facet |
Antarctic Byrd |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Stocker, Thomas F.; Johnson, Sigfùs J. (2003). A minimum thermodynamic model for the bipolar seesaw. Paleoceanography, 18(4), n/a-n/a. American Geophysical Union 10.1029/2003PA000920 <http://dx.doi.org/10.1029/2003PA000920> |
op_relation |
https://boris.unibe.ch/158212/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2003PA000920 |
container_title |
Paleoceanography |
container_volume |
18 |
container_issue |
4 |
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_version_ |
1774724125015670784 |