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dc.contributor.authorSlemr, Franz
dc.contributor.authorBrenninkmeijer, Carl A.
dc.contributor.authorRauthe-Schöch, Armin
dc.contributor.authorWeigelt, Andreas
dc.contributor.authorEbinghaus, Ralf
dc.contributor.authorBrunke, Ernst-Günther
dc.contributor.authorMartin, Lynwill
dc.contributor.authorSpain, T. Gerard
dc.contributor.authorO'Doherty, Simon
dc.date.accessioned2018-09-20T16:24:57Z
dc.date.available2018-09-20T16:24:57Z
dc.date.issued2016-02-25
dc.identifier.citationSlemr, Franz; Brenninkmeijer, Carl A. Rauthe-Schöch, Armin; Weigelt, Andreas; Ebinghaus, Ralf; Brunke, Ernst-Günther; Martin, Lynwill; Spain, T. Gerard; O'Doherty, Simon (2016). El niño-southern oscillation influence on tropospheric mercury concentrations. Geophysical Research Letters 43 (4), 1766-1771
dc.identifier.issn0094-8276
dc.identifier.urihttp://hdl.handle.net/10379/13943
dc.description.abstractThe El Nino-Southern Oscillation (ENSO) affects the tropospheric concentrations of many trace gases. Here we investigate the ENSO influence on mercury concentrations measured in the upper troposphere during Civil Aircraft for the Regular Investigation of the atmosphere Based on an Instrumented Container flights and at ground at Cape Point, South Africa, and Mace Head, Ireland. Mercury concentrations cross-correlate with Southern Oscillation Index (SOI) with a lag of 8 +/- 2 months. Highest mercury concentrations are always found at the most negative SOI values, i.e., 8 months after El Nino, and the amplitude of the interannual variations fluctuates between similar to 5 and 18%. The time lag is similar to that of CO whose interannual variations are driven largely by emissions from biomass burning (BB). The amplitude of the interannual variability of tropospheric mercury concentrations is consistent with the estimated variations in mercury emissions from BB. We thus conclude that BB is a major factor driving the interannual variation of tropospheric mercury concentrations.
dc.publisherWiley-Blackwell
dc.relation.ispartofGeophysical Research Letters
dc.subjectbiomass burning emissions
dc.subjectinterannual variability
dc.subjectatmosphere
dc.subjectgases
dc.subjectfires
dc.subjectmodel
dc.titleEl niño-southern oscillation influence on tropospheric mercury concentrations
dc.typeArticle
dc.identifier.doi10.1002/2016gl067949
dc.local.publishedsourcehttp://onlinelibrary.wiley.com/doi/10.1002/2016GL067949/pdf
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