A minimum thermodynamic model for the bipolar seesaw
[1] 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 hea...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.594.4066 2023-05-15T13:50:51+02:00 A minimum thermodynamic model for the bipolar seesaw Thomas F. Stocker Sigfùs J. Johnsen The Pennsylvania State University CiteSeerX Archives 2003 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.594.4066 http://www.climate.unibe.ch/~stocker/papers/stocker03po-corr.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.594.4066 http://www.climate.unibe.ch/~stocker/papers/stocker03po-corr.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.climate.unibe.ch/~stocker/papers/stocker03po-corr.pdf text 2003 ftciteseerx 2016-01-08T13:40:09Z [1] 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. INDEX TERMS: 1620 Global Change: Text Antarc* Antarctic Unknown Antarctic Byrd |
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English |
description |
[1] 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. INDEX TERMS: 1620 Global Change: |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thomas F. Stocker Sigfùs J. Johnsen |
spellingShingle |
Thomas F. Stocker Sigfùs J. Johnsen A minimum thermodynamic model for the bipolar seesaw |
author_facet |
Thomas F. Stocker Sigfùs J. Johnsen |
author_sort |
Thomas F. Stocker |
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 |
publishDate |
2003 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.594.4066 http://www.climate.unibe.ch/~stocker/papers/stocker03po-corr.pdf |
geographic |
Antarctic Byrd |
geographic_facet |
Antarctic Byrd |
genre |
Antarc* Antarctic |
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Antarc* Antarctic |
op_source |
http://www.climate.unibe.ch/~stocker/papers/stocker03po-corr.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.594.4066 http://www.climate.unibe.ch/~stocker/papers/stocker03po-corr.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766254223281881088 |