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High variability of atmospheric mercury in the summertime boundary layer through the central Arctic Ocean
Yu, J.; Xie, Z.; Kang, H.; Li, L.; Sun, C.; Bian, L.; Zhang, P. (2014). High variability of atmospheric mercury in the summertime boundary layer through the central Arctic Ocean. NPG Scientific Reports 4(6091): 7. http://hdl.handle.net/10.1038/srep06091
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Yu, J.
  • Xie, Z.
  • Kang, H.
  • Li, L.
  • Sun, C.
  • Bian, L.
  • Zhang, P.

Abstract
    The biogeochemical cycles of mercury in the Arctic springtime have been intensively investigated due to mercury being rapidly removed from the atmosphere. However, the behavior of mercury in the Arctic summertime is still poorly understood. Here we report the characteristics of total gaseous mercury (TGM) concentrations through the central Arctic Ocean from July to September, 2012. The TGM concentrations varied considerably (from 0.15 ng/m(3) to 4.58 ng/m(3)), and displayed a normal distribution with an average of 1.23 +/- 0.61 ng/m(3). The highest frequency range was 1.0-1.5 ng/m(3), lower than previously reported background values in the Northern Hemisphere. Inhomogeneous distributions were observed over the Arctic Ocean due to the effect of sea ice melt and/or runoff. A lower level of TGM was found in July than in September, potentially because ocean emission was outweighed by chemical loss.

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