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Article: The El Nio-Southern Oscillation and wetland methane interannual variability

TitleThe El Nio-Southern Oscillation and wetland methane interannual variability
Authors
Issue Date2011
Citation
Geophysical Research Letters, 2011, v. 38, n. 8 How to Cite?
AbstractGlobal measurements of atmospheric methane (CH4) concentrations continue to show large interannual variability whose origin is only partly understood. Here we quantify the influence of the El Nio-Southern Oscillation (ENSO) on wetland CH4 emissions, which are thought to be the dominant contributor to interannual variability of the CH4 sources. We use a simple wetland CH4 model that captures variability in wetland extent and soil carbon to model the spatial and temporal dynamics of wetland CH 4 emissions from 1950-2005 and compare these results to an ENSO index. We are able to explain a large fraction of the global and tropical variability in wetland CH4 emissions through correlation with the ENSO index. We find that repeated El Nio events throughout the 1980s and 1990s were a contributing factor towards reducing CH4 emissions and stabilizing atmospheric CH4 concentrations. An increase in emissions from the boreal region would likely strengthen the feedback between ENSO and interannual variability in global wetland CH4 emissions. Our analysis emphasizes that climate variability has a significant impact on wetland CH 4 emissions, which should be taken into account when considering future trends in CH4 sources. Copyright © 2011 by the American Geophysical Union.
Persistent Identifierhttp://hdl.handle.net/10722/268523
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHodson, E. L.-
dc.contributor.authorPoulter, B.-
dc.contributor.authorZimmermann, N. E.-
dc.contributor.authorPrigent, C.-
dc.contributor.authorKaplan, J. O.-
dc.date.accessioned2019-03-25T07:59:55Z-
dc.date.available2019-03-25T07:59:55Z-
dc.date.issued2011-
dc.identifier.citationGeophysical Research Letters, 2011, v. 38, n. 8-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/268523-
dc.description.abstractGlobal measurements of atmospheric methane (CH<inf>4</inf>) concentrations continue to show large interannual variability whose origin is only partly understood. Here we quantify the influence of the El Nio-Southern Oscillation (ENSO) on wetland CH<inf>4</inf> emissions, which are thought to be the dominant contributor to interannual variability of the CH<inf>4</inf> sources. We use a simple wetland CH<inf>4</inf> model that captures variability in wetland extent and soil carbon to model the spatial and temporal dynamics of wetland CH <inf>4</inf> emissions from 1950-2005 and compare these results to an ENSO index. We are able to explain a large fraction of the global and tropical variability in wetland CH<inf>4</inf> emissions through correlation with the ENSO index. We find that repeated El Nio events throughout the 1980s and 1990s were a contributing factor towards reducing CH<inf>4</inf> emissions and stabilizing atmospheric CH<inf>4</inf> concentrations. An increase in emissions from the boreal region would likely strengthen the feedback between ENSO and interannual variability in global wetland CH<inf>4</inf> emissions. Our analysis emphasizes that climate variability has a significant impact on wetland CH <inf>4</inf> emissions, which should be taken into account when considering future trends in CH<inf>4</inf> sources. Copyright © 2011 by the American Geophysical Union.-
dc.languageeng-
dc.relation.ispartofGeophysical Research Letters-
dc.titleThe El Nio-Southern Oscillation and wetland methane interannual variability-
dc.typeArticle-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1029/2011GL046861-
dc.identifier.scopuseid_2-s2.0-79955636584-
dc.identifier.volume38-
dc.identifier.issue8-
dc.identifier.spagenull-
dc.identifier.epagenull-
dc.identifier.isiWOS:000290108300004-
dc.identifier.issnl0094-8276-

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