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  El Nino-Southern Oscillation influence on tropospheric mercury concentrations

Slemr, F., Brenninkmeijer, C. A. M., Rauthe-Schöch, A., Weigelt, A., Ebinghaus, R., Brunke, E.-G., et al. (2016). El Nino-Southern Oscillation influence on tropospheric mercury concentrations. Geophysical Research Letters, 43(4), 1766-1771. doi:10.1002/2016GL067949.

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 Creators:
Slemr, Franz1, Author              
Brenninkmeijer, Carl A. M.1, Author              
Rauthe-Schöch, Armin1, Author              
Weigelt , Andreas, Author
Ebinghaus, Ralf, Author              
Brunke, Ernst-Guenther, Author
Martin, Lynwill, Author
Spain, T. Gerard, Author
O'Doherty, Simon, Author
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              

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 Abstract: The 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.

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 Dates: 2016-02-28
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000373109000046
DOI: 10.1002/2016GL067949
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Title: Geophysical Research Letters
  Abbreviation : GRL
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Geophysical Union
Pages: - Volume / Issue: 43 (4) Sequence Number: - Start / End Page: 1766 - 1771 Identifier: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217