CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core
CO2 ice-core records show an increase in the atmospheric concentration of 80–100 parts per million by volume (ppmv) from the last glacial maximum (LGM) to the early Holocene. We present CO2 measurements performed on an ice core from central Greenland, drilled during the Greenland Ice Core Project (G...
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ftdatacite:10.48350/158726 2023-05-15T13:47:04+02:00 CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core Anklin, M. Schwander, J. Stauffer, B. Tschumi, J. Fuchs, A. Barnola, J.M. Raynaud, D. 1997 https://dx.doi.org/10.48350/158726 https://boris.unibe.ch/158726/ unknown AGU open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 530 Physics Text article-journal journal article ScholarlyArticle 1997 ftdatacite https://doi.org/10.48350/158726 2021-11-05T12:55:41Z CO2 ice-core records show an increase in the atmospheric concentration of 80–100 parts per million by volume (ppmv) from the last glacial maximum (LGM) to the early Holocene. We present CO2 measurements performed on an ice core from central Greenland, drilled during the Greenland Ice Core Project (GRIP). This CO2 profile from GRIP confirms the most prominent CO2 increase from the LGM, with a mean concentration of 200 ppmv, to the early Holocene with concentrations between 290 and 310 ppmv. Some structures of the new CO2 record are similar to those previously obtained from the Dye 3 ice core (Greenland), which indicated a dilemma between Greenland and Antarctic CO2 records [Oeschger et al., 1988]. Both Greenland cores show high CO2 values for rather mild climatic periods during the last glaciation, whereas CO2 records from Antarctica do not show such high CO2 variations during the glaciation and, furthermore, the CO2 values in the early Holocene are about 20–30 ppmv higher in the GRIP record than in Antarctic records. There is some evidence that the difference could be due to chemical reactions between impurities in the ice leading to an increase of the CO2 concentration under certain conditions. If in situ processes can change the CO2 concentration in the air bubbles, the question arises about how reliably do CO2 records from ice cores reflect the atmospheric composition at the time of ice formation. The discrepancies between the CO2 profiles from Greenland and Antarctica can be explained by in situ production of excess CO2 due to interactions between carbonate and acidic species. Since the carbonate concentration in Antarctic ice is much lower than in Greenland ice, CO2 records from Antarctica are much less affected by such in situ-produced CO2. Text Antarc* Antarctic Antarctica Dye 3 Dye-3 Greenland Greenland ice core Greenland Ice core Project GRIP ice core DataCite Metadata Store (German National Library of Science and Technology) Antarctic Greenland |
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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 Anklin, M. Schwander, J. Stauffer, B. Tschumi, J. Fuchs, A. Barnola, J.M. Raynaud, D. CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core |
topic_facet |
530 Physics |
description |
CO2 ice-core records show an increase in the atmospheric concentration of 80–100 parts per million by volume (ppmv) from the last glacial maximum (LGM) to the early Holocene. We present CO2 measurements performed on an ice core from central Greenland, drilled during the Greenland Ice Core Project (GRIP). This CO2 profile from GRIP confirms the most prominent CO2 increase from the LGM, with a mean concentration of 200 ppmv, to the early Holocene with concentrations between 290 and 310 ppmv. Some structures of the new CO2 record are similar to those previously obtained from the Dye 3 ice core (Greenland), which indicated a dilemma between Greenland and Antarctic CO2 records [Oeschger et al., 1988]. Both Greenland cores show high CO2 values for rather mild climatic periods during the last glaciation, whereas CO2 records from Antarctica do not show such high CO2 variations during the glaciation and, furthermore, the CO2 values in the early Holocene are about 20–30 ppmv higher in the GRIP record than in Antarctic records. There is some evidence that the difference could be due to chemical reactions between impurities in the ice leading to an increase of the CO2 concentration under certain conditions. If in situ processes can change the CO2 concentration in the air bubbles, the question arises about how reliably do CO2 records from ice cores reflect the atmospheric composition at the time of ice formation. The discrepancies between the CO2 profiles from Greenland and Antarctica can be explained by in situ production of excess CO2 due to interactions between carbonate and acidic species. Since the carbonate concentration in Antarctic ice is much lower than in Greenland ice, CO2 records from Antarctica are much less affected by such in situ-produced CO2. |
format |
Text |
author |
Anklin, M. Schwander, J. Stauffer, B. Tschumi, J. Fuchs, A. Barnola, J.M. Raynaud, D. |
author_facet |
Anklin, M. Schwander, J. Stauffer, B. Tschumi, J. Fuchs, A. Barnola, J.M. Raynaud, D. |
author_sort |
Anklin, M. |
title |
CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core |
title_short |
CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core |
title_full |
CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core |
title_fullStr |
CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core |
title_full_unstemmed |
CO2 record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core |
title_sort |
co2 record between 40 and 8 kyr b.p. from the greenland ice core project ice core |
publisher |
AGU |
publishDate |
1997 |
url |
https://dx.doi.org/10.48350/158726 https://boris.unibe.ch/158726/ |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Dye 3 Dye-3 Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
genre_facet |
Antarc* Antarctic Antarctica Dye 3 Dye-3 Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
op_rights |
open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.48350/158726 |
_version_ |
1766246264601575424 |