Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4
Large temperature variations on millennial time scales in Greenland characterised the last ice age. Abrupt warmings, known as Dansgaard–Oeschger (DO) events, can be traced in the δ18Oice record of Greenland ice cores. However, it has been shown that δ18Oice is not a direct temperature proxy. Measure...
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ftunivbern:oai:boris.unibe.ch:20742 2023-08-20T04:06:49+02:00 Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4 Huber, Christof Leuenberger, Markus Spahni, Renato Flückiger, Jacqueline Schwander, Jakob Stocker, Thomas Johnsen, Sigfus Landais, Amaelle Jouzel, Jean 2006 application/pdf https://boris.unibe.ch/20742/1/huber06epsl_b.pdf https://boris.unibe.ch/20742/ eng eng Elsevier https://boris.unibe.ch/20742/ info:eu-repo/semantics/restrictedAccess Huber, Christof; Leuenberger, Markus; Spahni, Renato; Flückiger, Jacqueline; Schwander, Jakob; Stocker, Thomas; Johnsen, Sigfus; Landais, Amaelle; Jouzel, Jean (2006). Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4. Earth and planetary science letters, 243(3-4), pp. 504-519. Amsterdam: Elsevier 10.1016/j.epsl.2006.01.002 <http://dx.doi.org/10.1016/j.epsl.2006.01.002> info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2006 ftunivbern https://doi.org/10.1016/j.epsl.2006.01.002 2023-07-31T20:44:44Z Large temperature variations on millennial time scales in Greenland characterised the last ice age. Abrupt warmings, known as Dansgaard–Oeschger (DO) events, can be traced in the δ18Oice record of Greenland ice cores. However, it has been shown that δ18Oice is not a direct temperature proxy. Measurements of the isotopic composition of gases trapped in the ice can be used to calibrate the paleothermometer. Here we present a continuous temperature record based on high resolution δ15N measurements and firn model studies. It covers a sequence of 9 DO events (9–17) during the time period from 38 to 64 kyr BP for which temperature changes of 8 to 15 °C were estimated. The difference between the modern and the glacial δ18Oice–T relationship can be explained by a combination of source temperature changes and changes in the annual distribution of precipitation. A detailed comparison of the temperature evolution with reconstructions of the atmospheric methane (CH4) concentration shows that CH4 rises lag temperature increases at the onset of DO events by 25 to 70 yr within data resolution. The strong correlation between Greenland temperature and CH4 on millennial and submillennial time scales suggests that variations on these time scales were probably of hemispheric extent. Article in Journal/Newspaper Greenland Greenland ice cores BORIS (Bern Open Repository and Information System, University of Bern) Greenland Earth and Planetary Science Letters 243 3-4 504 519 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
description |
Large temperature variations on millennial time scales in Greenland characterised the last ice age. Abrupt warmings, known as Dansgaard–Oeschger (DO) events, can be traced in the δ18Oice record of Greenland ice cores. However, it has been shown that δ18Oice is not a direct temperature proxy. Measurements of the isotopic composition of gases trapped in the ice can be used to calibrate the paleothermometer. Here we present a continuous temperature record based on high resolution δ15N measurements and firn model studies. It covers a sequence of 9 DO events (9–17) during the time period from 38 to 64 kyr BP for which temperature changes of 8 to 15 °C were estimated. The difference between the modern and the glacial δ18Oice–T relationship can be explained by a combination of source temperature changes and changes in the annual distribution of precipitation. A detailed comparison of the temperature evolution with reconstructions of the atmospheric methane (CH4) concentration shows that CH4 rises lag temperature increases at the onset of DO events by 25 to 70 yr within data resolution. The strong correlation between Greenland temperature and CH4 on millennial and submillennial time scales suggests that variations on these time scales were probably of hemispheric extent. |
format |
Article in Journal/Newspaper |
author |
Huber, Christof Leuenberger, Markus Spahni, Renato Flückiger, Jacqueline Schwander, Jakob Stocker, Thomas Johnsen, Sigfus Landais, Amaelle Jouzel, Jean |
spellingShingle |
Huber, Christof Leuenberger, Markus Spahni, Renato Flückiger, Jacqueline Schwander, Jakob Stocker, Thomas Johnsen, Sigfus Landais, Amaelle Jouzel, Jean Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4 |
author_facet |
Huber, Christof Leuenberger, Markus Spahni, Renato Flückiger, Jacqueline Schwander, Jakob Stocker, Thomas Johnsen, Sigfus Landais, Amaelle Jouzel, Jean |
author_sort |
Huber, Christof |
title |
Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4 |
title_short |
Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4 |
title_full |
Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4 |
title_fullStr |
Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4 |
title_full_unstemmed |
Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4 |
title_sort |
isotope calibrated greenland temperature record over marine isotope stage 3 and its relation to ch4 |
publisher |
Elsevier |
publishDate |
2006 |
url |
https://boris.unibe.ch/20742/1/huber06epsl_b.pdf https://boris.unibe.ch/20742/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores |
genre_facet |
Greenland Greenland ice cores |
op_source |
Huber, Christof; Leuenberger, Markus; Spahni, Renato; Flückiger, Jacqueline; Schwander, Jakob; Stocker, Thomas; Johnsen, Sigfus; Landais, Amaelle; Jouzel, Jean (2006). Isotope calibrated Greenland temperature record over Marine Isotope Stage 3 and its relation to CH4. Earth and planetary science letters, 243(3-4), pp. 504-519. Amsterdam: Elsevier 10.1016/j.epsl.2006.01.002 <http://dx.doi.org/10.1016/j.epsl.2006.01.002> |
op_relation |
https://boris.unibe.ch/20742/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2006.01.002 |
container_title |
Earth and Planetary Science Letters |
container_volume |
243 |
container_issue |
3-4 |
container_start_page |
504 |
op_container_end_page |
519 |
_version_ |
1774718155817484288 |