The El Nino-Southern Oscillation and wetland methane interannual variability
作者： E. L. Hodson , B. Poulter , N. E. Zimmermann , C. Prigent , J. O. Kaplan
DOI: 10.1029/2011GL046861
关键词: Climatology 、 Biogeochemical cycle 、 Boreal 、 Wetland 、 Soil carbon 、 Environmental science 、 Wetland methane emissions 、 Atmospheric methane 、 Structural basin 、 Methane
摘要: Global measurements of atmospheric methane (CH4) concentrations continue to show large interannual variability whose origin is only partly understood. Here we quantify the influence El Nino-Southern Oscillation (ENSO) on wetland CH4 emissions, which are thought be dominant contributor sources. We use a simple model that captures in extent and soil carbon spatial temporal dynamics emissions from 1950-2005 compare these results an ENSO index. able explain fraction global tropical through correlation with find repeated Nino events throughout 1980s 1990s were contributing factor towards reducing stabilizing concentrations. An increase boreal region would likely strengthen feedback between emissions. Our analysis emphasizes climate has significant impact should taken into account when considering future trends Citation: Hodson, E. L., B. Poulter, N. Zimmermann, C. Prigent, J. O. Kaplan (2011), The variability, Geophys. Res. Lett., 38, L08810, doi:10.1029/2011GL046861.
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