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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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/94884 2024-09-15T17:47:41+00:00 Eight glacial cycles from an Antarctic ice core including R. Lorrain and R. Souchez (2004) Lorrain, Reginald Souchez, Roland 2004 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/94884 https://dipot.ulb.ac.be/dspace/bitstream/2013/94884/3/doi_73691.pdf en eng uri/info:doi/10.1038/nature02599 uri/info:scp/3042531958 https://dipot.ulb.ac.be/dspace/bitstream/2013/94884/3/doi_73691.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/94884 1 full-text file(s): info:eu-repo/semantics/restrictedAccess Nature (London), 429 (6992 Glaciologie Climatologie info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2004 ftunivbruxelles 2024-07-19T04:48:16Z 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. 0 SCOPUS: ar.j EPICA members info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Glaciologie Climatologie |
spellingShingle |
Glaciologie Climatologie Lorrain, Reginald Souchez, Roland Eight glacial cycles from an Antarctic ice core |
topic_facet |
Glaciologie Climatologie |
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. 0 SCOPUS: ar.j EPICA members info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Lorrain, Reginald Souchez, Roland |
author_facet |
Lorrain, Reginald Souchez, Roland |
author_sort |
Lorrain, Reginald |
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 |
publishDate |
2004 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/94884 https://dipot.ulb.ac.be/dspace/bitstream/2013/94884/3/doi_73691.pdf |
genre |
Antarc* Antarctic Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core |
op_source |
Nature (London), 429 (6992 |
op_relation |
uri/info:doi/10.1038/nature02599 uri/info:scp/3042531958 https://dipot.ulb.ac.be/dspace/bitstream/2013/94884/3/doi_73691.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/94884 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/restrictedAccess |
_version_ |
1810497157308874752 |