Sources and deposition of reactive gaseous mercury in the marine atmosphere

@inproceedings{Holmes2009SourcesAD,
  title={Sources and deposition of reactive gaseous mercury in the marine atmosphere},
  author={Christopher D Holmes and D. J. Jacob and Robert Peter Mason and Dan A. Jaffe},
  year={2009}
}
Observations of reactive gaseous mercury (RGM) in marine air show a consistent diurnal cycle with minimum at night, rapid increase at sunrise, maximum at midday, and rapid decline in afternoon. We use a box model for the marine boundary layer (MBL) to interpret these observations in terms of RGM sources and sinks. The morning rise and midday maximum are consistent with oxidation of elemental mercury (Hg) by Br atoms, requiring <2 ppt BrO in most conditions. Oxidation of Hg by Br accounts for 35… CONTINUE READING