Glacial terminations as southern warmings without northern control
The change from a glacial to an interglacial climate is paced by variations in Earth’s orbit. However, the detailed sequence of events that leads to a glacial termination remains controversial. It is particularly unclear whether the northern or southern hemisphere leads the termination. Here we pres...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/6397/ https://doi.org/10.1038/ngeo442 |
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ftnerc:oai:nora.nerc.ac.uk:6397 2023-05-15T14:05:16+02:00 Glacial terminations as southern warmings without northern control Wolff, E.W. Fischer, H. Rothlisberger, R. 2009 http://nora.nerc.ac.uk/id/eprint/6397/ https://doi.org/10.1038/ngeo442 unknown Nature Publishing Group Wolff, E.W.; Fischer, H.; Rothlisberger, R. 2009 Glacial terminations as southern warmings without northern control. Nature Geoscience, 2 (3). 206-209. https://doi.org/10.1038/ngeo442 <https://doi.org/10.1038/ngeo442> Meteorology and Climatology Glaciology Earth Sciences Publication - Article PeerReviewed 2009 ftnerc https://doi.org/10.1038/ngeo442 2023-02-04T19:24:13Z The change from a glacial to an interglacial climate is paced by variations in Earth’s orbit. However, the detailed sequence of events that leads to a glacial termination remains controversial. It is particularly unclear whether the northern or southern hemisphere leads the termination. Here we present a hypothesis for the beginning and continuation of glacial terminations, which relies on the observation that the initial stages of terminations are indistinguishable from the warming stage of events in Antarctica known as Antarctic Isotopic Maxima, which occur frequently during glacial periods. Such warmings in Antarctica generally begin to reverse with the onset of a warm Dansgaard–Oeschger event in the northern hemisphere. However, in the early stages of a termination, Antarctic warming is not followed by any abrupt warming in the north. We propose that the lack of an Antarctic climate reversal enables southern warming and the associated atmospheric carbon dioxide rise to reach a point at which full deglaciation becomes inevitable. In our view, glacial terminations, in common with other warmings that do not lead to termination, are led from the southern hemisphere, but only specific conditions in the northern hemisphere enable the climate state to complete its shift to interglacial conditions. Article in Journal/Newspaper Antarc* Antarctic Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic Nature Geoscience 2 3 206 209 |
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Natural Environment Research Council: NERC Open Research Archive |
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Meteorology and Climatology Glaciology Earth Sciences |
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Meteorology and Climatology Glaciology Earth Sciences Wolff, E.W. Fischer, H. Rothlisberger, R. Glacial terminations as southern warmings without northern control |
topic_facet |
Meteorology and Climatology Glaciology Earth Sciences |
description |
The change from a glacial to an interglacial climate is paced by variations in Earth’s orbit. However, the detailed sequence of events that leads to a glacial termination remains controversial. It is particularly unclear whether the northern or southern hemisphere leads the termination. Here we present a hypothesis for the beginning and continuation of glacial terminations, which relies on the observation that the initial stages of terminations are indistinguishable from the warming stage of events in Antarctica known as Antarctic Isotopic Maxima, which occur frequently during glacial periods. Such warmings in Antarctica generally begin to reverse with the onset of a warm Dansgaard–Oeschger event in the northern hemisphere. However, in the early stages of a termination, Antarctic warming is not followed by any abrupt warming in the north. We propose that the lack of an Antarctic climate reversal enables southern warming and the associated atmospheric carbon dioxide rise to reach a point at which full deglaciation becomes inevitable. In our view, glacial terminations, in common with other warmings that do not lead to termination, are led from the southern hemisphere, but only specific conditions in the northern hemisphere enable the climate state to complete its shift to interglacial conditions. |
format |
Article in Journal/Newspaper |
author |
Wolff, E.W. Fischer, H. Rothlisberger, R. |
author_facet |
Wolff, E.W. Fischer, H. Rothlisberger, R. |
author_sort |
Wolff, E.W. |
title |
Glacial terminations as southern warmings without northern control |
title_short |
Glacial terminations as southern warmings without northern control |
title_full |
Glacial terminations as southern warmings without northern control |
title_fullStr |
Glacial terminations as southern warmings without northern control |
title_full_unstemmed |
Glacial terminations as southern warmings without northern control |
title_sort |
glacial terminations as southern warmings without northern control |
publisher |
Nature Publishing Group |
publishDate |
2009 |
url |
http://nora.nerc.ac.uk/id/eprint/6397/ https://doi.org/10.1038/ngeo442 |
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Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
Wolff, E.W.; Fischer, H.; Rothlisberger, R. 2009 Glacial terminations as southern warmings without northern control. Nature Geoscience, 2 (3). 206-209. https://doi.org/10.1038/ngeo442 <https://doi.org/10.1038/ngeo442> |
op_doi |
https://doi.org/10.1038/ngeo442 |
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Nature Geoscience |
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2 |
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3 |
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206 |
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209 |
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1766277079218782208 |