Physics
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3808810h&link_type=abstract
Geophysical Research Letters, Volume 38, Issue 8, CiteID L08810
Physics
3
Global Change: Land/Atmosphere Interactions (1218, 1843, 3322), Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions (0426, 1610), Atmospheric Composition And Structure: Constituent Sources And Sinks, Biogeosciences: Biogeochemical Cycles, Processes, And Modeling (0412, 0793, 1615, 4805, 4912), Biogeosciences: Wetlands (1890)
Scientific paper
Global 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 Niño-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 CH4 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 Niño 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 CH4 emissions, which should be taken into account when considering future trends in CH4 sources.
Hodson E. L.
Kaplan Jed O.
Poulter B.
Prigent Catherine
Zimmermann Niklaus E.
No associations
LandOfFree
The El Niño-Southern Oscillation and wetland methane interannual variability does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The El Niño-Southern Oscillation and wetland methane interannual variability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The El Niño-Southern Oscillation and wetland methane interannual variability will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-767080