Articles | Volume 17, issue 14
Atmos. Chem. Phys., 17, 8999–9017, 2017
https://doi.org/10.5194/acp-17-8999-2017
Atmos. Chem. Phys., 17, 8999–9017, 2017
https://doi.org/10.5194/acp-17-8999-2017

Research article 27 Jul 2017

Research article | 27 Jul 2017

Subtropical subsidence and surface deposition of oxidized mercury produced in the free troposphere

Viral Shah and Lyatt Jaeglé

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Cited articles

Aas, W.: Data quality 2004, quality assurance, and field comparisons. EMEP/CCC Report 4/2006, NILU, Norway, available at: http://www.nilu.no/projects/ccc/reports/cccr4-2006.pdf (last access: 17 July 2017), 2006.
Ambrose, J. L., Lyman, S. N., Huang, J., Gustin, M. S., and Jaffe, D. A.: Fast Time Resolution Oxidized Mercury Measurements during the Reno Atmospheric Mercury Intercomparison Experiment (RAMIX), Environ. Sci. Technol., 47, 7285–7294, https://doi.org/10.1021/es303916v, 2013.
Ambrose, J. L., Gratz, L. E., Jaffe, D. A., Campos, T., Flocke, F. M., Knapp, D. J., Stechman, D. M., Stell, M., Weinheimer, A. J., Cantrell, C. A., and Mauldin, R. L.: Mercury Emission Ratios from Coal-Fired Power Plants in the Southeastern United States during NOMADSS, Environ. Sci. Technol., 49, 10389–10397, https://doi.org/10.1021/acs.est.5b01755, 2015.
Angot, H., Barret, M., Magand, O., Ramonet, M., and Dommergue, A.: A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island, Atmos. Chem. Phys., 14, 11461–11473, https://doi.org/10.5194/acp-14-11461-2014, 2014.
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We use a model of mercury chemistry and transport in the atmosphere, along with ground- and aircraft-based mercury observations, to learn that oxidized mercury chemically produced in the free troposphere descends in the subtropical anticyclones and makes up much of the mercury depositing to the Earth's surface. Our findings imply that mercury chemistry in the free troposphere and transport in the subtropics are important links between global emissions and surface deposition of mercury.
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