Two-phase change in CO2, Antarctic temperature and global climate during Termination II
The end of the Last Glacial Maximum (Termination I), roughly 20 thousand years ago (ka), was marked by cooling in the Northern Hemisphere, a weakening of the Asian monsoon, a rise in atmospheric CO2 concentrations and warming over Antarctica. The sequence of events associated with the previous glaci...
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ftdatacite:10.7892/boris.49320 2023-05-15T13:54:54+02:00 Two-phase change in CO2, Antarctic temperature and global climate during Termination II Parrenin, F. Landais, A. Leuenberger, Markus Prié, F. Masson-Delmotte, V. Jouzel, J. Caillon, N. Raynaud, D. Capron, E. Roche, D. M. Dreyfus, G. Chappellaz, J. Lourantou, A. Teste, G. 2013 application/pdf https://dx.doi.org/10.7892/boris.49320 http://boris.unibe.ch/49320/ en eng Nature Publishing Group info:eu-repo/semantics/restrictedAccess 530 Physics 550 Earth sciences & geology CreativeWork article 2013 ftdatacite https://doi.org/10.7892/boris.49320 2021-11-05T12:55:41Z The end of the Last Glacial Maximum (Termination I), roughly 20 thousand years ago (ka), was marked by cooling in the Northern Hemisphere, a weakening of the Asian monsoon, a rise in atmospheric CO2 concentrations and warming over Antarctica. The sequence of events associated with the previous glacial–interglacial transition (Termination II), roughly 136 ka, is less well constrained. Here we present high-resolution records of atmospheric CO2 concentrations and isotopic composition of N2—an atmospheric temperature proxy—from air bubbles in the EPICA Dome C ice core that span Termination II. We find that atmospheric CO2 concentrations and Antarctic temperature started increasing in phase around 136 ka, but in a second phase of Termination II, from 130.5 to 129 ka, the rise in atmospheric CO2 concentrations lagged that of Antarctic temperature unequivocally. We suggest that during this second phase, the intensification of the low-latitude hydrological cycle resulted in the development of a CO2 sink, which counteracted the CO2 outgassing from the Southern Hemisphere oceans over this period. Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core DataCite Metadata Store (German National Library of Science and Technology) Antarctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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language |
English |
topic |
530 Physics 550 Earth sciences & geology |
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530 Physics 550 Earth sciences & geology Parrenin, F. Landais, A. Leuenberger, Markus Prié, F. Masson-Delmotte, V. Jouzel, J. Caillon, N. Raynaud, D. Capron, E. Roche, D. M. Dreyfus, G. Chappellaz, J. Lourantou, A. Teste, G. Two-phase change in CO2, Antarctic temperature and global climate during Termination II |
topic_facet |
530 Physics 550 Earth sciences & geology |
description |
The end of the Last Glacial Maximum (Termination I), roughly 20 thousand years ago (ka), was marked by cooling in the Northern Hemisphere, a weakening of the Asian monsoon, a rise in atmospheric CO2 concentrations and warming over Antarctica. The sequence of events associated with the previous glacial–interglacial transition (Termination II), roughly 136 ka, is less well constrained. Here we present high-resolution records of atmospheric CO2 concentrations and isotopic composition of N2—an atmospheric temperature proxy—from air bubbles in the EPICA Dome C ice core that span Termination II. We find that atmospheric CO2 concentrations and Antarctic temperature started increasing in phase around 136 ka, but in a second phase of Termination II, from 130.5 to 129 ka, the rise in atmospheric CO2 concentrations lagged that of Antarctic temperature unequivocally. We suggest that during this second phase, the intensification of the low-latitude hydrological cycle resulted in the development of a CO2 sink, which counteracted the CO2 outgassing from the Southern Hemisphere oceans over this period. |
format |
Article in Journal/Newspaper |
author |
Parrenin, F. Landais, A. Leuenberger, Markus Prié, F. Masson-Delmotte, V. Jouzel, J. Caillon, N. Raynaud, D. Capron, E. Roche, D. M. Dreyfus, G. Chappellaz, J. Lourantou, A. Teste, G. |
author_facet |
Parrenin, F. Landais, A. Leuenberger, Markus Prié, F. Masson-Delmotte, V. Jouzel, J. Caillon, N. Raynaud, D. Capron, E. Roche, D. M. Dreyfus, G. Chappellaz, J. Lourantou, A. Teste, G. |
author_sort |
Parrenin, F. |
title |
Two-phase change in CO2, Antarctic temperature and global climate during Termination II |
title_short |
Two-phase change in CO2, Antarctic temperature and global climate during Termination II |
title_full |
Two-phase change in CO2, Antarctic temperature and global climate during Termination II |
title_fullStr |
Two-phase change in CO2, Antarctic temperature and global climate during Termination II |
title_full_unstemmed |
Two-phase change in CO2, Antarctic temperature and global climate during Termination II |
title_sort |
two-phase change in co2, antarctic temperature and global climate during termination ii |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
https://dx.doi.org/10.7892/boris.49320 http://boris.unibe.ch/49320/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.7892/boris.49320 |
_version_ |
1766261103779643392 |