Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ...
Analysis of impurities entrapped in natural ice is the most promising method for reconstructing the history of atmospheric composition before the period of direct measurement and offers the possibility of extending the record to at least 100,000 years B.P. We report here the present state of work in...
Main Authors: | , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
American Geophysical Union
1985
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48350/160973 https://boris.unibe.ch/160973/ |
id |
ftdatacite:10.48350/160973 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48350/160973 2024-09-15T17:47:40+00:00 Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ... Oeschger, H. Stauffer, B. Finkel, R. Langway Jr., C.C. 1985 https://dx.doi.org/10.48350/160973 https://boris.unibe.ch/160973/ unknown American Geophysical Union https://dx.doi.org/10.1029/GM032p0132 restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec 530 Physics book part Text ScholarlyArticle article-journal 1985 ftdatacite https://doi.org/10.48350/16097310.1029/GM032p0132 2024-09-02T10:17:31Z Analysis of impurities entrapped in natural ice is the most promising method for reconstructing the history of atmospheric composition before the period of direct measurement and offers the possibility of extending the record to at least 100,000 years B.P. We report here the present state of work in this field, with special emphasis on atmospheric CO2 concentration. After discussing the mechanism by which atmospheric gases are entrapped in ice, we report CO2 concentrations in ice core samples, up to 100,000 years old, from deep drilling projects in Greenland and the Antarctic. Results from ice deposited during the last 2000 years allow us to estimate the preindustrial atmospheric CO2 level, an important boundary condition for modelling the anthropogenic CO2 increase. Using older samples from a deep ice core drilled at Dye 3, Greenland, we show that the CO2 concentration was 180 to 200 ppmv at the end of the Wisconsin and increased during the transition to the Holocene to values in the 260 to 300 ppmv range. ... Text Antarc* Antarctic Dye 3 Dye-3 Greenland ice core DataCite |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
530 Physics |
spellingShingle |
530 Physics Oeschger, H. Stauffer, B. Finkel, R. Langway Jr., C.C. Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ... |
topic_facet |
530 Physics |
description |
Analysis of impurities entrapped in natural ice is the most promising method for reconstructing the history of atmospheric composition before the period of direct measurement and offers the possibility of extending the record to at least 100,000 years B.P. We report here the present state of work in this field, with special emphasis on atmospheric CO2 concentration. After discussing the mechanism by which atmospheric gases are entrapped in ice, we report CO2 concentrations in ice core samples, up to 100,000 years old, from deep drilling projects in Greenland and the Antarctic. Results from ice deposited during the last 2000 years allow us to estimate the preindustrial atmospheric CO2 level, an important boundary condition for modelling the anthropogenic CO2 increase. Using older samples from a deep ice core drilled at Dye 3, Greenland, we show that the CO2 concentration was 180 to 200 ppmv at the end of the Wisconsin and increased during the transition to the Holocene to values in the 260 to 300 ppmv range. ... |
format |
Text |
author |
Oeschger, H. Stauffer, B. Finkel, R. Langway Jr., C.C. |
author_facet |
Oeschger, H. Stauffer, B. Finkel, R. Langway Jr., C.C. |
author_sort |
Oeschger, H. |
title |
Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ... |
title_short |
Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ... |
title_full |
Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ... |
title_fullStr |
Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ... |
title_full_unstemmed |
Variations of the CO2 concentration of occluded air and of anions and dust in polar ice cores ... |
title_sort |
variations of the co2 concentration of occluded air and of anions and dust in polar ice cores ... |
publisher |
American Geophysical Union |
publishDate |
1985 |
url |
https://dx.doi.org/10.48350/160973 https://boris.unibe.ch/160973/ |
genre |
Antarc* Antarctic Dye 3 Dye-3 Greenland ice core |
genre_facet |
Antarc* Antarctic Dye 3 Dye-3 Greenland ice core |
op_relation |
https://dx.doi.org/10.1029/GM032p0132 |
op_rights |
restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec |
op_doi |
https://doi.org/10.48350/16097310.1029/GM032p0132 |
_version_ |
1810497130617372672 |