N2O and CH4 variations during the last glacial epoch: Insight into global processes
Greenhouse gas measurements along polar ice cores provide important insight into the former composition of the atmosphere, its natural variations, and the responses to fast climatic changes in the past. We present high-resolution nitrous oxide (N2O) and methane (CH4) records measured along two ice c...
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ftunivbern:oai:boris.unibe.ch:158467 2023-08-20T04:06:53+02:00 N2O and CH4 variations during the last glacial epoch: Insight into global processes Flückiger, Jacqueline Blunier, Thomas Stauffer, Bernhard Chappellaz, Jérôme Spahni, Renato Kawamura, Kenji Schwander, Jakob Stocker, Thomas F. Dahl-Jensen, Dorthe 2004 application/pdf https://boris.unibe.ch/158467/1/flueckiger04gbc.pdf https://boris.unibe.ch/158467/ eng eng American Geophysical Union https://boris.unibe.ch/158467/ info:eu-repo/semantics/openAccess Flückiger, Jacqueline; Blunier, Thomas; Stauffer, Bernhard; Chappellaz, Jérôme; Spahni, Renato; Kawamura, Kenji; Schwander, Jakob; Stocker, Thomas F.; Dahl-Jensen, Dorthe (2004). N2O and CH4 variations during the last glacial epoch: Insight into global processes. Global biogeochemical cycles, 18(1), n/a-n/a. American Geophysical Union 10.1029/2003GB002122 <http://dx.doi.org/10.1029/2003GB002122> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2004 ftunivbern https://doi.org/10.1029/2003GB002122 2023-07-31T22:08:11Z Greenhouse gas measurements along polar ice cores provide important insight into the former composition of the atmosphere, its natural variations, and the responses to fast climatic changes in the past. We present high-resolution nitrous oxide (N2O) and methane (CH4) records measured along two ice cores from central Greenland covering part of Marine Isotope Stages 3 and 4 in the last glacial epoch. The N2O data confirm the hypothesis that N2O shows variations in phase to fast climatic changes observed in the Northern Hemisphere, the so-called Dansgaard-Oeschger (D-O) events. Variations exist not only for events with a long duration (1500 years and more) but also for the shorter ones. The comparison with CH4 unveils interesting differences between the response of CH4 and N2O to D-O events. While the average amplitudes of CH4 oscillations associated with D-O events are similar to those of the Northern Hemisphere summer insolation, the magnitude of the N2O concentration change instead correlates with the duration of the D-O events. The records give further insight into the timing of concentration changes at the beginning of D-O events. They show that for long-lasting events the N2O concentration starts to increase before both the sharp increase in the CH4 concentration and the temperature reconstructed for Greenland. Article in Journal/Newspaper Greenland BORIS (Bern Open Repository and Information System, University of Bern) Greenland Global Biogeochemical Cycles 18 1 n/a n/a |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Flückiger, Jacqueline Blunier, Thomas Stauffer, Bernhard Chappellaz, Jérôme Spahni, Renato Kawamura, Kenji Schwander, Jakob Stocker, Thomas F. Dahl-Jensen, Dorthe N2O and CH4 variations during the last glacial epoch: Insight into global processes |
topic_facet |
530 Physics |
description |
Greenhouse gas measurements along polar ice cores provide important insight into the former composition of the atmosphere, its natural variations, and the responses to fast climatic changes in the past. We present high-resolution nitrous oxide (N2O) and methane (CH4) records measured along two ice cores from central Greenland covering part of Marine Isotope Stages 3 and 4 in the last glacial epoch. The N2O data confirm the hypothesis that N2O shows variations in phase to fast climatic changes observed in the Northern Hemisphere, the so-called Dansgaard-Oeschger (D-O) events. Variations exist not only for events with a long duration (1500 years and more) but also for the shorter ones. The comparison with CH4 unveils interesting differences between the response of CH4 and N2O to D-O events. While the average amplitudes of CH4 oscillations associated with D-O events are similar to those of the Northern Hemisphere summer insolation, the magnitude of the N2O concentration change instead correlates with the duration of the D-O events. The records give further insight into the timing of concentration changes at the beginning of D-O events. They show that for long-lasting events the N2O concentration starts to increase before both the sharp increase in the CH4 concentration and the temperature reconstructed for Greenland. |
format |
Article in Journal/Newspaper |
author |
Flückiger, Jacqueline Blunier, Thomas Stauffer, Bernhard Chappellaz, Jérôme Spahni, Renato Kawamura, Kenji Schwander, Jakob Stocker, Thomas F. Dahl-Jensen, Dorthe |
author_facet |
Flückiger, Jacqueline Blunier, Thomas Stauffer, Bernhard Chappellaz, Jérôme Spahni, Renato Kawamura, Kenji Schwander, Jakob Stocker, Thomas F. Dahl-Jensen, Dorthe |
author_sort |
Flückiger, Jacqueline |
title |
N2O and CH4 variations during the last glacial epoch: Insight into global processes |
title_short |
N2O and CH4 variations during the last glacial epoch: Insight into global processes |
title_full |
N2O and CH4 variations during the last glacial epoch: Insight into global processes |
title_fullStr |
N2O and CH4 variations during the last glacial epoch: Insight into global processes |
title_full_unstemmed |
N2O and CH4 variations during the last glacial epoch: Insight into global processes |
title_sort |
n2o and ch4 variations during the last glacial epoch: insight into global processes |
publisher |
American Geophysical Union |
publishDate |
2004 |
url |
https://boris.unibe.ch/158467/1/flueckiger04gbc.pdf https://boris.unibe.ch/158467/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Flückiger, Jacqueline; Blunier, Thomas; Stauffer, Bernhard; Chappellaz, Jérôme; Spahni, Renato; Kawamura, Kenji; Schwander, Jakob; Stocker, Thomas F.; Dahl-Jensen, Dorthe (2004). N2O and CH4 variations during the last glacial epoch: Insight into global processes. Global biogeochemical cycles, 18(1), n/a-n/a. American Geophysical Union 10.1029/2003GB002122 <http://dx.doi.org/10.1029/2003GB002122> |
op_relation |
https://boris.unibe.ch/158467/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2003GB002122 |
container_title |
Global Biogeochemical Cycles |
container_volume |
18 |
container_issue |
1 |
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n/a |
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1774718237321199616 |