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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ftdatacite:10.48350/158212 2023-05-15T13:52:47+02:00 A minimum thermodynamic model for the bipolar seesaw Stocker, Thomas F. Johnson, Sigfùs J. 2003 https://dx.doi.org/10.48350/158212 https://boris.unibe.ch/158212/ unknown American Geophysical Union open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 530 Physics Text article-journal journal article ScholarlyArticle 2003 ftdatacite https://doi.org/10.48350/158212 2021-11-05T12:55:41Z 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. Text Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Byrd |
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DataCite Metadata Store (German National Library of Science and Technology) |
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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 |
Text |
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://dx.doi.org/10.48350/158212 https://boris.unibe.ch/158212/ |
geographic |
Antarctic Byrd |
geographic_facet |
Antarctic Byrd |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_rights |
open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.48350/158212 |
_version_ |
1766257470317002752 |