Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present
The European Project for Ice Coring in Antarctica Dome ice core from Dome C (EDC) has allowed for the reconstruction of atmospheric CO2 concentrations for the last 800,000-years. Here we revisit the oldest part of the EDC CO2 record using different air extraction methods and sections of the core. Fo...
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Online Access: | https://doi.org/10.1002/2014GL061957 http://infoscience.epfl.ch/record/298374 |
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ftinfoscience:oai:infoscience.epfl.ch:298374 2023-05-15T13:43:17+02:00 Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present Bereiter, Bernhard Eggleston, Sarah Schmitt, Jochen Nehrbass-Ahles, Christoph Stocker, Thomas F. Fischer, Hubertus Kipfstuhl, Sepp Chappellaz, Jerome 2022-11-23T16:11:54Z https://doi.org/10.1002/2014GL061957 http://infoscience.epfl.ch/record/298374 unknown Washington, American Geophysical Union (AGU) doi:10.1002/2014GL061957 isi:000349956000044 http://infoscience.epfl.ch/record/298374 http://infoscience.epfl.ch/record/298374 Text 2022 ftinfoscience https://doi.org/10.1002/2014GL061957 2023-02-13T23:12:34Z The European Project for Ice Coring in Antarctica Dome ice core from Dome C (EDC) has allowed for the reconstruction of atmospheric CO2 concentrations for the last 800,000-years. Here we revisit the oldest part of the EDC CO2 record using different air extraction methods and sections of the core. For our established cracker system, we found an analytical artifact, which increases over the deepest 200-m and reaches 10.1-±-2.4-ppm in the oldest/deepest part. The governing mechanism is not yet fully understood, but it is related to insufficient gas extraction in combination with ice relaxation during storage and ice structure. The corrected record presented here resolves partly - but not completely - the issue with a different correlation between CO2 and Antarctic temperatures found in this oldest part of the records. In addition, we provide here an update of 800,000-years atmospheric CO2 history including recent studies covering the last glacial cycle. © 2015. American Geophysical Union. All Rights Reserved. Text Antarc* Antarctic Antarctica EPICA ice core EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Geophysical Research Letters 42 2 542 549 |
institution |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
op_collection_id |
ftinfoscience |
language |
unknown |
description |
The European Project for Ice Coring in Antarctica Dome ice core from Dome C (EDC) has allowed for the reconstruction of atmospheric CO2 concentrations for the last 800,000-years. Here we revisit the oldest part of the EDC CO2 record using different air extraction methods and sections of the core. For our established cracker system, we found an analytical artifact, which increases over the deepest 200-m and reaches 10.1-±-2.4-ppm in the oldest/deepest part. The governing mechanism is not yet fully understood, but it is related to insufficient gas extraction in combination with ice relaxation during storage and ice structure. The corrected record presented here resolves partly - but not completely - the issue with a different correlation between CO2 and Antarctic temperatures found in this oldest part of the records. In addition, we provide here an update of 800,000-years atmospheric CO2 history including recent studies covering the last glacial cycle. © 2015. American Geophysical Union. All Rights Reserved. |
format |
Text |
author |
Bereiter, Bernhard Eggleston, Sarah Schmitt, Jochen Nehrbass-Ahles, Christoph Stocker, Thomas F. Fischer, Hubertus Kipfstuhl, Sepp Chappellaz, Jerome |
spellingShingle |
Bereiter, Bernhard Eggleston, Sarah Schmitt, Jochen Nehrbass-Ahles, Christoph Stocker, Thomas F. Fischer, Hubertus Kipfstuhl, Sepp Chappellaz, Jerome Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present |
author_facet |
Bereiter, Bernhard Eggleston, Sarah Schmitt, Jochen Nehrbass-Ahles, Christoph Stocker, Thomas F. Fischer, Hubertus Kipfstuhl, Sepp Chappellaz, Jerome |
author_sort |
Bereiter, Bernhard |
title |
Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present |
title_short |
Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present |
title_full |
Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present |
title_fullStr |
Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present |
title_full_unstemmed |
Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present |
title_sort |
revision of the epica dome c co2 record from 800 to 600-kyr before present |
publisher |
Washington, American Geophysical Union (AGU) |
publishDate |
2022 |
url |
https://doi.org/10.1002/2014GL061957 http://infoscience.epfl.ch/record/298374 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core |
op_source |
http://infoscience.epfl.ch/record/298374 |
op_relation |
doi:10.1002/2014GL061957 isi:000349956000044 http://infoscience.epfl.ch/record/298374 |
op_doi |
https://doi.org/10.1002/2014GL061957 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
2 |
container_start_page |
542 |
op_container_end_page |
549 |
_version_ |
1766186879234867200 |