Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation
Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 ch...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2012
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-8-1213-2012 https://noa.gwlb.de/receive/cop_mods_00025298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00025253/cp-8-1213-2012.pdf https://cp.copernicus.org/articles/8/1213/2012/cp-8-1213-2012.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00025298 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00025298 2023-05-15T13:36:44+02:00 Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation Pedro, J. B. Rasmussen, S. O. van Ommen, T. D. 2012-07 electronic https://doi.org/10.5194/cp-8-1213-2012 https://noa.gwlb.de/receive/cop_mods_00025298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00025253/cp-8-1213-2012.pdf https://cp.copernicus.org/articles/8/1213/2012/cp-8-1213-2012.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-8-1213-2012 https://noa.gwlb.de/receive/cop_mods_00025298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00025253/cp-8-1213-2012.pdf https://cp.copernicus.org/articles/8/1213/2012/cp-8-1213-2012.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2012 ftnonlinearchiv https://doi.org/10.5194/cp-8-1213-2012 2022-02-08T22:49:44Z Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by ~80 parts per million by volume and Antarctic temperature increased by ~10 °C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags. Article in Journal/Newspaper Antarc* Antarctic ice core Niedersächsisches Online-Archiv NOA Antarctic Climate of the Past 8 4 1213 1221 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Pedro, J. B. Rasmussen, S. O. van Ommen, T. D. Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation |
topic_facet |
article Verlagsveröffentlichung |
description |
Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by ~80 parts per million by volume and Antarctic temperature increased by ~10 °C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags. |
format |
Article in Journal/Newspaper |
author |
Pedro, J. B. Rasmussen, S. O. van Ommen, T. D. |
author_facet |
Pedro, J. B. Rasmussen, S. O. van Ommen, T. D. |
author_sort |
Pedro, J. B. |
title |
Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation |
title_short |
Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation |
title_full |
Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation |
title_fullStr |
Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation |
title_full_unstemmed |
Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation |
title_sort |
tightened constraints on the time-lag between antarctic temperature and co2 during the last deglaciation |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/cp-8-1213-2012 https://noa.gwlb.de/receive/cop_mods_00025298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00025253/cp-8-1213-2012.pdf https://cp.copernicus.org/articles/8/1213/2012/cp-8-1213-2012.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-8-1213-2012 https://noa.gwlb.de/receive/cop_mods_00025298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00025253/cp-8-1213-2012.pdf https://cp.copernicus.org/articles/8/1213/2012/cp-8-1213-2012.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-8-1213-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
4 |
container_start_page |
1213 |
op_container_end_page |
1221 |
_version_ |
1766083289332842496 |