Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr
Recent measurements (1,2) on ice samples from Camp Century (Greenland, 77°10'N, 61°08'W), Byrd Station (Antarctica, 80°01'S, 110°31'W) and Dome C (74°40'S, 125°10'E) suggest that during the late part of the last glaciation the atmospheric CO2 concentration was significa...
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ftdatacite:10.48350/158259 2023-05-15T13:52:47+02:00 Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr Neftel, A. Oeschger, H. Schwander, J. Stauffer, B. Zumbrunn, R. 1982 https://dx.doi.org/10.48350/158259 https://boris.unibe.ch/158259/ unknown Macmillan Journals Ltd. restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec 530 Physics Text article-journal journal article ScholarlyArticle 1982 ftdatacite https://doi.org/10.48350/158259 2021-11-05T12:55:41Z Recent measurements (1,2) on ice samples from Camp Century (Greenland, 77°10'N, 61°08'W), Byrd Station (Antarctica, 80°01'S, 110°31'W) and Dome C (74°40'S, 125°10'E) suggest that during the late part of the last glaciation the atmospheric CO2 concentration was significantly lower than during the Holocene. Further investigation of this natural increase of the atmospheric CO2 concentration in the past should aid our understanding of the climatic implications of the man-made CO2 increase since the beginning of industrialization (3). Here we report new and precise measurements of the CO2 concentration of the air occluded in bubbles of ice samples from Camp Century and Byrd Station, using a new dry extraction technique. The extracted gases were analysed with an IR-laser spectrometer (IRLS). Samples from 22 different depths were analysed from each core. The samples are distributed over a depth interval corresponding approximately to the past 40,000 yr. In addition results for ice samples from selected depth horizons from a colder region (North Central, Greenland 74°37'N, 39°36'W) and from a warmer region (Dye-3, Greenland 65°11'N, 43°50'W) are given. Based on these results we estimate the trend of the atmospheric CO2 concentration during the past 40,000 yr. Text Antarc* Antarctica Dye 3 Dye-3 Greenland ice core DataCite Metadata Store (German National Library of Science and Technology) Greenland Byrd Byrd Station ENVELOPE(-119.533,-119.533,-80.017,-80.017) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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530 Physics |
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530 Physics Neftel, A. Oeschger, H. Schwander, J. Stauffer, B. Zumbrunn, R. Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr |
topic_facet |
530 Physics |
description |
Recent measurements (1,2) on ice samples from Camp Century (Greenland, 77°10'N, 61°08'W), Byrd Station (Antarctica, 80°01'S, 110°31'W) and Dome C (74°40'S, 125°10'E) suggest that during the late part of the last glaciation the atmospheric CO2 concentration was significantly lower than during the Holocene. Further investigation of this natural increase of the atmospheric CO2 concentration in the past should aid our understanding of the climatic implications of the man-made CO2 increase since the beginning of industrialization (3). Here we report new and precise measurements of the CO2 concentration of the air occluded in bubbles of ice samples from Camp Century and Byrd Station, using a new dry extraction technique. The extracted gases were analysed with an IR-laser spectrometer (IRLS). Samples from 22 different depths were analysed from each core. The samples are distributed over a depth interval corresponding approximately to the past 40,000 yr. In addition results for ice samples from selected depth horizons from a colder region (North Central, Greenland 74°37'N, 39°36'W) and from a warmer region (Dye-3, Greenland 65°11'N, 43°50'W) are given. Based on these results we estimate the trend of the atmospheric CO2 concentration during the past 40,000 yr. |
format |
Text |
author |
Neftel, A. Oeschger, H. Schwander, J. Stauffer, B. Zumbrunn, R. |
author_facet |
Neftel, A. Oeschger, H. Schwander, J. Stauffer, B. Zumbrunn, R. |
author_sort |
Neftel, A. |
title |
Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr |
title_short |
Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr |
title_full |
Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr |
title_fullStr |
Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr |
title_full_unstemmed |
Ice core sample measurements give atmospheric CO2 content during the past 40,000 yr |
title_sort |
ice core sample measurements give atmospheric co2 content during the past 40,000 yr |
publisher |
Macmillan Journals Ltd. |
publishDate |
1982 |
url |
https://dx.doi.org/10.48350/158259 https://boris.unibe.ch/158259/ |
long_lat |
ENVELOPE(-119.533,-119.533,-80.017,-80.017) |
geographic |
Greenland Byrd Byrd Station |
geographic_facet |
Greenland Byrd Byrd Station |
genre |
Antarc* Antarctica Dye 3 Dye-3 Greenland ice core |
genre_facet |
Antarc* Antarctica Dye 3 Dye-3 Greenland ice core |
op_rights |
restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec |
op_doi |
https://doi.org/10.48350/158259 |
_version_ |
1766257473514110976 |