A novel method to study the phase relationship between Antarctic and Greenland climate
A classical method for understanding the coupling between northern and southern hemispheres during millennial-scale climate events is based on the correlation between Greenland and Antarctic ice core records of atmospheric composition. Here we present a new approach based on the use of a single Anta...
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Washington, American Geophysical Union (AGU)
2022
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Online Access: | https://doi.org/10.1029/2003GL017838 http://infoscience.epfl.ch/record/298263 |
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ftinfoscience:oai:infoscience.epfl.ch:298263 2023-05-15T13:43:17+02:00 A novel method to study the phase relationship between Antarctic and Greenland climate Caillon, N. Jouzel, J. Severinghaus, J. P. Chappellaz, J. Blunier, T. 2022-11-23T16:10:55Z https://doi.org/10.1029/2003GL017838 http://infoscience.epfl.ch/record/298263 unknown Washington, American Geophysical Union (AGU) doi:10.1029/2003GL017838 isi:000189016000004 http://infoscience.epfl.ch/record/298263 http://infoscience.epfl.ch/record/298263 Text 2022 ftinfoscience https://doi.org/10.1029/2003GL017838 2023-02-13T23:12:29Z A classical method for understanding the coupling between northern and southern hemispheres during millennial-scale climate events is based on the correlation between Greenland and Antarctic ice core records of atmospheric composition. Here we present a new approach based on the use of a single Antarctic ice core in which measurements of methane concentration and inert gas isotopes place constraints on the timing of a rapid climate change in the North and of its Antarctic counterpart. We applied it to the Marine Isotope Stage (MIS) 5d/c transition early in the last glaciation ∼108 ky BP. Our results indicate that the Antarctic temperature increase occurred 2 ky before the methane increase, which is used as a time marker of the warming in the Northern Hemisphere. This result is in agreement with the "bipolar seesaw" mechanism used to explain the phase relationships documented between 23 and 90 ky BP [Blunier and Brook, 2001]. Text Antarc* Antarctic Greenland ice core EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Greenland The Antarctic Geophysical Research Letters 30 17 n/a n/a |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
language |
unknown |
description |
A classical method for understanding the coupling between northern and southern hemispheres during millennial-scale climate events is based on the correlation between Greenland and Antarctic ice core records of atmospheric composition. Here we present a new approach based on the use of a single Antarctic ice core in which measurements of methane concentration and inert gas isotopes place constraints on the timing of a rapid climate change in the North and of its Antarctic counterpart. We applied it to the Marine Isotope Stage (MIS) 5d/c transition early in the last glaciation ∼108 ky BP. Our results indicate that the Antarctic temperature increase occurred 2 ky before the methane increase, which is used as a time marker of the warming in the Northern Hemisphere. This result is in agreement with the "bipolar seesaw" mechanism used to explain the phase relationships documented between 23 and 90 ky BP [Blunier and Brook, 2001]. |
format |
Text |
author |
Caillon, N. Jouzel, J. Severinghaus, J. P. Chappellaz, J. Blunier, T. |
spellingShingle |
Caillon, N. Jouzel, J. Severinghaus, J. P. Chappellaz, J. Blunier, T. A novel method to study the phase relationship between Antarctic and Greenland climate |
author_facet |
Caillon, N. Jouzel, J. Severinghaus, J. P. Chappellaz, J. Blunier, T. |
author_sort |
Caillon, N. |
title |
A novel method to study the phase relationship between Antarctic and Greenland climate |
title_short |
A novel method to study the phase relationship between Antarctic and Greenland climate |
title_full |
A novel method to study the phase relationship between Antarctic and Greenland climate |
title_fullStr |
A novel method to study the phase relationship between Antarctic and Greenland climate |
title_full_unstemmed |
A novel method to study the phase relationship between Antarctic and Greenland climate |
title_sort |
novel method to study the phase relationship between antarctic and greenland climate |
publisher |
Washington, American Geophysical Union (AGU) |
publishDate |
2022 |
url |
https://doi.org/10.1029/2003GL017838 http://infoscience.epfl.ch/record/298263 |
geographic |
Antarctic Greenland The Antarctic |
geographic_facet |
Antarctic Greenland The Antarctic |
genre |
Antarc* Antarctic Greenland ice core |
genre_facet |
Antarc* Antarctic Greenland ice core |
op_source |
http://infoscience.epfl.ch/record/298263 |
op_relation |
doi:10.1029/2003GL017838 isi:000189016000004 http://infoscience.epfl.ch/record/298263 |
op_doi |
https://doi.org/10.1029/2003GL017838 |
container_title |
Geophysical Research Letters |
container_volume |
30 |
container_issue |
17 |
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n/a |
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n/a |
_version_ |
1766186745805668352 |