Eight glacial cycles from an Antarctic ice core
The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not p...
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ftunivbern:oai:boris.unibe.ch:158225 2023-08-20T04:00:45+02:00 Eight glacial cycles from an Antarctic ice core EPICA, community members 2004 application/pdf https://boris.unibe.ch/158225/1/epica04nat.pdf https://boris.unibe.ch/158225/ eng eng Nature Publishing Group https://boris.unibe.ch/158225/ info:eu-repo/semantics/restrictedAccess EPICA, community members (2004). Eight glacial cycles from an Antarctic ice core. Nature, 429(6992), pp. 623-628. Nature Publishing Group 10.1038/nature02599 <http://dx.doi.org/10.1038/nature02599> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2004 ftunivbern https://doi.org/10.1038/nature02599 2023-07-31T22:08:01Z The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not possible to infer the abundance of greenhouse gases in the atmosphere from marine records. Here we report the recovery of a deep ice core from Dome C, Antarctica, that provides a climate record for the past 740,000 years. For the four most recent glacial cycles, the data agree well with the record from Vostok. The earlier period, between 740,000 and 430,000 years ago, was characterized by less pronounced warmth in interglacial periods in Antarctica, but a higher proportion of each cycle was spent in the warm mode. The transition from glacial to interglacial conditions about 430,000 years ago (Termination V) resembles the transition into the present interglacial period in terms of the magnitude of change in temperatures and greenhouse gases, but there are significant differences in the patterns of change. The interglacial stage following Termination V was exceptionally long—28,000 years compared to, for example, the 12,000 years recorded so far in the present interglacial period. Given the similarities between this earlier warm period and today, our results may imply that without human intervention, a climate similar to the present one would extend well into the future. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core BORIS (Bern Open Repository and Information System, University of Bern) Antarctic The Antarctic Nature 429 6992 623 628 |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
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English |
topic |
530 Physics |
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530 Physics EPICA, community members Eight glacial cycles from an Antarctic ice core |
topic_facet |
530 Physics |
description |
The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not possible to infer the abundance of greenhouse gases in the atmosphere from marine records. Here we report the recovery of a deep ice core from Dome C, Antarctica, that provides a climate record for the past 740,000 years. For the four most recent glacial cycles, the data agree well with the record from Vostok. The earlier period, between 740,000 and 430,000 years ago, was characterized by less pronounced warmth in interglacial periods in Antarctica, but a higher proportion of each cycle was spent in the warm mode. The transition from glacial to interglacial conditions about 430,000 years ago (Termination V) resembles the transition into the present interglacial period in terms of the magnitude of change in temperatures and greenhouse gases, but there are significant differences in the patterns of change. The interglacial stage following Termination V was exceptionally long—28,000 years compared to, for example, the 12,000 years recorded so far in the present interglacial period. Given the similarities between this earlier warm period and today, our results may imply that without human intervention, a climate similar to the present one would extend well into the future. |
format |
Article in Journal/Newspaper |
author |
EPICA, community members |
author_facet |
EPICA, community members |
author_sort |
EPICA, community members |
title |
Eight glacial cycles from an Antarctic ice core |
title_short |
Eight glacial cycles from an Antarctic ice core |
title_full |
Eight glacial cycles from an Antarctic ice core |
title_fullStr |
Eight glacial cycles from an Antarctic ice core |
title_full_unstemmed |
Eight glacial cycles from an Antarctic ice core |
title_sort |
eight glacial cycles from an antarctic ice core |
publisher |
Nature Publishing Group |
publishDate |
2004 |
url |
https://boris.unibe.ch/158225/1/epica04nat.pdf https://boris.unibe.ch/158225/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica ice core |
op_source |
EPICA, community members (2004). Eight glacial cycles from an Antarctic ice core. Nature, 429(6992), pp. 623-628. Nature Publishing Group 10.1038/nature02599 <http://dx.doi.org/10.1038/nature02599> |
op_relation |
https://boris.unibe.ch/158225/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/nature02599 |
container_title |
Nature |
container_volume |
429 |
container_issue |
6992 |
container_start_page |
623 |
op_container_end_page |
628 |
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1774720110690304000 |