Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores
Analyses of air extracted from polar ice cores are the most straightforward method of reconstructing the atmospheric concentrations of greenhouse gases and their variations for past climatic epochs. These measurements show that the concentration of the three most important greenhouse gases (other th...
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ftdatacite:10.48350/158765 2023-05-15T16:39:10+02:00 Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores Stauffer, Bernhard Flückiger, Jacqueline Monnin, Eric Schwander, Jakob Barnola, Jean-Marc Chappellaz, Jérôme 2002 https://dx.doi.org/10.48350/158765 https://boris.unibe.ch/158765/ unknown International Glaciological Society restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec 530 Physics Text ScholarlyArticle article-journal conference object 2002 ftdatacite https://doi.org/10.48350/158765 2021-11-05T12:55:41Z Analyses of air extracted from polar ice cores are the most straightforward method of reconstructing the atmospheric concentrations of greenhouse gases and their variations for past climatic epochs. These measurements show that the concentration of the three most important greenhouse gases (other than water vapour) CO2, CH4 and N2O have steadily increased during the past 250 years due to anthropogenic activities (Prather and others, 2001; Prentice and others, 2001). Ice-core results also provided the first evidence of a substantial increase in the concentration of the three gases during the transition from the last glacial epoch to the Holocene (Raynaud and others, 1993). However, results from different cores are not always in agreement concerning details and small, short-term variations. the composition of the air enclosed in bubbles can be slightly changed by fractionation during the enclosure process, by chemical reactions and/or biological activity in the ice and by fractionation during the air extraction. We compile here several records with short-term variations or anomalies and discuss possible causes, taking into account improved analytical techniques and new results. Conference Object ice core DataCite Metadata Store (German National Library of Science and Technology) |
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530 Physics |
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530 Physics Stauffer, Bernhard Flückiger, Jacqueline Monnin, Eric Schwander, Jakob Barnola, Jean-Marc Chappellaz, Jérôme Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores |
topic_facet |
530 Physics |
description |
Analyses of air extracted from polar ice cores are the most straightforward method of reconstructing the atmospheric concentrations of greenhouse gases and their variations for past climatic epochs. These measurements show that the concentration of the three most important greenhouse gases (other than water vapour) CO2, CH4 and N2O have steadily increased during the past 250 years due to anthropogenic activities (Prather and others, 2001; Prentice and others, 2001). Ice-core results also provided the first evidence of a substantial increase in the concentration of the three gases during the transition from the last glacial epoch to the Holocene (Raynaud and others, 1993). However, results from different cores are not always in agreement concerning details and small, short-term variations. the composition of the air enclosed in bubbles can be slightly changed by fractionation during the enclosure process, by chemical reactions and/or biological activity in the ice and by fractionation during the air extraction. We compile here several records with short-term variations or anomalies and discuss possible causes, taking into account improved analytical techniques and new results. |
format |
Conference Object |
author |
Stauffer, Bernhard Flückiger, Jacqueline Monnin, Eric Schwander, Jakob Barnola, Jean-Marc Chappellaz, Jérôme |
author_facet |
Stauffer, Bernhard Flückiger, Jacqueline Monnin, Eric Schwander, Jakob Barnola, Jean-Marc Chappellaz, Jérôme |
author_sort |
Stauffer, Bernhard |
title |
Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores |
title_short |
Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores |
title_full |
Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores |
title_fullStr |
Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores |
title_full_unstemmed |
Atmospheric CO2, CH4 and N2O records over the past 60 000 years based on the comparison of different polar ice cores |
title_sort |
atmospheric co2, ch4 and n2o records over the past 60 000 years based on the comparison of different polar ice cores |
publisher |
International Glaciological Society |
publishDate |
2002 |
url |
https://dx.doi.org/10.48350/158765 https://boris.unibe.ch/158765/ |
genre |
ice core |
genre_facet |
ice core |
op_rights |
restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec |
op_doi |
https://doi.org/10.48350/158765 |
_version_ |
1766029501118021632 |