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Publication:
N2O and CH4 variations during the last glacial epoch: Insight into global processes

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cris.virtualsource.author-orcid46d13f97-a7ed-4563-b9ac-ba3a7ef16c50
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dc.contributor.authorFlückiger, Jacqueline
dc.contributor.authorBlunier, Thomas
dc.contributor.authorStauffer, Bernhard
dc.contributor.authorChappellaz, Jérôme
dc.contributor.authorSpahni, Renato
dc.contributor.authorKawamura, Kenji
dc.contributor.authorSchwander, Jakob
dc.contributor.authorStocker, Thomas
dc.contributor.authorDahl-Jensen, Dorthe
dc.date.accessioned2024-09-02T17:46:59Z
dc.date.available2024-09-02T17:46:59Z
dc.date.issued2004
dc.description.abstractGreenhouse 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.
dc.description.numberOfPages14
dc.description.sponsorshipPhysikalisches Institut, Klima- und Umweltphysik (KUP)
dc.description.sponsorshipPhysikalisches Institut
dc.identifier.doi10.48350/158467
dc.identifier.publisherDOI10.1029/2003GB002122
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/43157
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.relation.ispartofGlobal biogeochemical cycles
dc.relation.issn0886-6236
dc.relation.organizationDCD5A442BF29E17DE0405C82790C4DE2
dc.relation.organizationDCD5A442C44AE17DE0405C82790C4DE2
dc.subject.ddc500 - Science::530 - Physics
dc.titleN2O and CH4 variations during the last glacial epoch: Insight into global processes
dc.typearticle
dspace.entity.typePublication
oaire.citation.endPagen/a
oaire.citation.issue1
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oaire.citation.volume18
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oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
oairecerif.author.affiliationPhysikalisches Institut
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oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
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oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
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unibe.date.licenseChanged2021-09-08 11:31:48
unibe.description.ispublishedpub
unibe.eprints.legacyId158467
unibe.journal.abbrevTitleGLOBAL BIOGEOCHEM CY
unibe.refereedTRUE
unibe.subtype.articlejournal

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