A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception
The reconstruction of the stable carbon isotope evolution in atmospheric CO 2 (δ 13 C atm ), as archived in Antarctic ice cores, bears the potential to disentangle the contributions of the different carbon cycle fluxes causing past CO 2 variations. Here we present a new record of δ 13 C atm before,...
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ftcopernicus:oai:publications.copernicus.org:cp19764 2023-05-15T13:54:27+02:00 A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception Schneider, R. Schmitt, J. Köhler, P. Joos, F. Fischer, H. 2018-09-27 application/pdf https://doi.org/10.5194/cp-9-2507-2013 https://cp.copernicus.org/articles/9/2507/2013/ eng eng doi:10.5194/cp-9-2507-2013 https://cp.copernicus.org/articles/9/2507/2013/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-9-2507-2013 2020-07-20T16:25:17Z The reconstruction of the stable carbon isotope evolution in atmospheric CO 2 (δ 13 C atm ), as archived in Antarctic ice cores, bears the potential to disentangle the contributions of the different carbon cycle fluxes causing past CO 2 variations. Here we present a new record of δ 13 C atm before, during and after the Marine Isotope Stage 5.5 (155 000 to 105 000 yr BP). The dataset is archived on the data repository PANGEA® ( www.pangea.de ) under 10.1594/PANGAEA.817041 . The record was derived with a well established sublimation method using ice from the EPICA Dome C (EDC) and the Talos Dome ice cores in East Antarctica. We find a 0.4‰ shift to heavier values between the mean δ 13 C atm level in the Penultimate (~ 140 000 yr BP) and Last Glacial Maximum (~ 22 000 yr BP), which can be explained by either (i) changes in the isotopic composition or (ii) intensity of the carbon input fluxes to the combined ocean/atmosphere carbon reservoir or (iii) by long-term peat buildup. Our isotopic data suggest that the carbon cycle evolution along Termination II and the subsequent interglacial was controlled by essentially the same processes as during the last 24 000 yr, but with different phasing and magnitudes. Furthermore, a 5000 yr lag in the CO 2 decline relative to EDC temperatures is confirmed during the glacial inception at the end of MIS5.5 (120 000 yr BP). Based on our isotopic data this lag can be explained by terrestrial carbon release and carbonate compensation. Text Antarc* Antarctic Antarctica East Antarctica EPICA Copernicus Publications: E-Journals Antarctic East Antarctica Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Climate of the Past 9 6 2507 2523 |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
The reconstruction of the stable carbon isotope evolution in atmospheric CO 2 (δ 13 C atm ), as archived in Antarctic ice cores, bears the potential to disentangle the contributions of the different carbon cycle fluxes causing past CO 2 variations. Here we present a new record of δ 13 C atm before, during and after the Marine Isotope Stage 5.5 (155 000 to 105 000 yr BP). The dataset is archived on the data repository PANGEA® ( www.pangea.de ) under 10.1594/PANGAEA.817041 . The record was derived with a well established sublimation method using ice from the EPICA Dome C (EDC) and the Talos Dome ice cores in East Antarctica. We find a 0.4‰ shift to heavier values between the mean δ 13 C atm level in the Penultimate (~ 140 000 yr BP) and Last Glacial Maximum (~ 22 000 yr BP), which can be explained by either (i) changes in the isotopic composition or (ii) intensity of the carbon input fluxes to the combined ocean/atmosphere carbon reservoir or (iii) by long-term peat buildup. Our isotopic data suggest that the carbon cycle evolution along Termination II and the subsequent interglacial was controlled by essentially the same processes as during the last 24 000 yr, but with different phasing and magnitudes. Furthermore, a 5000 yr lag in the CO 2 decline relative to EDC temperatures is confirmed during the glacial inception at the end of MIS5.5 (120 000 yr BP). Based on our isotopic data this lag can be explained by terrestrial carbon release and carbonate compensation. |
format |
Text |
author |
Schneider, R. Schmitt, J. Köhler, P. Joos, F. Fischer, H. |
spellingShingle |
Schneider, R. Schmitt, J. Köhler, P. Joos, F. Fischer, H. A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception |
author_facet |
Schneider, R. Schmitt, J. Köhler, P. Joos, F. Fischer, H. |
author_sort |
Schneider, R. |
title |
A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception |
title_short |
A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception |
title_full |
A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception |
title_fullStr |
A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception |
title_full_unstemmed |
A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception |
title_sort |
reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the last glacial inception |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-9-2507-2013 https://cp.copernicus.org/articles/9/2507/2013/ |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic East Antarctica Talos Dome |
geographic_facet |
Antarctic East Antarctica Talos Dome |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-9-2507-2013 https://cp.copernicus.org/articles/9/2507/2013/ |
op_doi |
https://doi.org/10.5194/cp-9-2507-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
6 |
container_start_page |
2507 |
op_container_end_page |
2523 |
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1766260372541538304 |