Atmospheric CO2 concentration during the last glaciation
Analyses of atmospheric air extracted from air bubbles in polar glacier ice provide a measure of past CO2 concentrations and their temporal variations. Earlier measurements have shown that the atmospheric CO2 concentration was significantly lower during the late Wisconsin stage and that the change f...
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International Glaciological Society
1984
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ftunivbern:oai:boris.unibe.ch:158750 2023-08-20T03:59:48+02:00 Atmospheric CO2 concentration during the last glaciation Stauffer, B. Hofer, H. Oeschger, H. Schwander, J. Siegenthaler, U. 1984 application/pdf https://boris.unibe.ch/158750/1/stauffer84ag.pdf https://boris.unibe.ch/158750/ eng eng International Glaciological Society https://boris.unibe.ch/158750/ info:eu-repo/semantics/restrictedAccess Stauffer, B.; Hofer, H.; Oeschger, H.; Schwander, J.; Siegenthaler, U. (1984). Atmospheric CO2 concentration during the last glaciation. Annals of glaciology, 5, pp. 160-164. International Glaciological Society 10.3189/1984AoG5-1-160-164 <http://dx.doi.org/10.3189/1984AoG5-1-160-164> 530 Physics info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion PeerReviewed 1984 ftunivbern https://doi.org/10.3189/1984AoG5-1-160-164 2023-07-31T22:08:19Z Analyses of atmospheric air extracted from air bubbles in polar glacier ice provide a measure of past CO2 concentrations and their temporal variations. Earlier measurements have shown that the atmospheric CO2 concentration was significantly lower during the late Wisconsin stage and that the change from low to high CO2 concentration occurred in a relatively short time period. We measured the CO2 concentration of ice samples from the deep ice core recently drilled at Dye 3 (south Greenland). The core section investigated represents ice from about 40 to 30 ka BP. The air extracted from the ice samples shows large variations of CO2 concentration which are correlated with δ18O values of the ice samples. A probable explanation of the results is that corresponding changes of the atmospheric CO2 concentration occurred during that glacial period. These changes could have had a significant influence on the climate. Possible reasons for the variations of the atmospheric CO2 concentration are discussed. Conference Object Annals of Glaciology Dye 3 Dye-3 glacier Greenland ice core BORIS (Bern Open Repository and Information System, University of Bern) Greenland Annals of Glaciology 5 160 164 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Stauffer, B. Hofer, H. Oeschger, H. Schwander, J. Siegenthaler, U. Atmospheric CO2 concentration during the last glaciation |
topic_facet |
530 Physics |
description |
Analyses of atmospheric air extracted from air bubbles in polar glacier ice provide a measure of past CO2 concentrations and their temporal variations. Earlier measurements have shown that the atmospheric CO2 concentration was significantly lower during the late Wisconsin stage and that the change from low to high CO2 concentration occurred in a relatively short time period. We measured the CO2 concentration of ice samples from the deep ice core recently drilled at Dye 3 (south Greenland). The core section investigated represents ice from about 40 to 30 ka BP. The air extracted from the ice samples shows large variations of CO2 concentration which are correlated with δ18O values of the ice samples. A probable explanation of the results is that corresponding changes of the atmospheric CO2 concentration occurred during that glacial period. These changes could have had a significant influence on the climate. Possible reasons for the variations of the atmospheric CO2 concentration are discussed. |
format |
Conference Object |
author |
Stauffer, B. Hofer, H. Oeschger, H. Schwander, J. Siegenthaler, U. |
author_facet |
Stauffer, B. Hofer, H. Oeschger, H. Schwander, J. Siegenthaler, U. |
author_sort |
Stauffer, B. |
title |
Atmospheric CO2 concentration during the last glaciation |
title_short |
Atmospheric CO2 concentration during the last glaciation |
title_full |
Atmospheric CO2 concentration during the last glaciation |
title_fullStr |
Atmospheric CO2 concentration during the last glaciation |
title_full_unstemmed |
Atmospheric CO2 concentration during the last glaciation |
title_sort |
atmospheric co2 concentration during the last glaciation |
publisher |
International Glaciological Society |
publishDate |
1984 |
url |
https://boris.unibe.ch/158750/1/stauffer84ag.pdf https://boris.unibe.ch/158750/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Annals of Glaciology Dye 3 Dye-3 glacier Greenland ice core |
genre_facet |
Annals of Glaciology Dye 3 Dye-3 glacier Greenland ice core |
op_source |
Stauffer, B.; Hofer, H.; Oeschger, H.; Schwander, J.; Siegenthaler, U. (1984). Atmospheric CO2 concentration during the last glaciation. Annals of glaciology, 5, pp. 160-164. International Glaciological Society 10.3189/1984AoG5-1-160-164 <http://dx.doi.org/10.3189/1984AoG5-1-160-164> |
op_relation |
https://boris.unibe.ch/158750/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3189/1984AoG5-1-160-164 |
container_title |
Annals of Glaciology |
container_volume |
5 |
container_start_page |
160 |
op_container_end_page |
164 |
_version_ |
1774715740193030144 |