Articles | Volume 15, issue 3
https://doi.org/10.5194/acp-15-1161-2015
https://doi.org/10.5194/acp-15-1161-2015
Research article
 | 
02 Feb 2015
Research article |  | 02 Feb 2015

Use of a global model to understand speciated atmospheric mercury observations at five high-elevation sites

P. Weiss-Penzias, H. M. Amos, N. E. Selin, M. S. Gustin, D. A. Jaffe, D. Obrist, G.-R. Sheu, and A. Giang

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Cited articles

Ambrose, J. L., Reidmiller, D. R., and Jaffe, D. A.: Causes of high O3 in the lower free troposphere over the Pacific Northwest as observed at the Mt. Bachelor Observatory, Atmos. Environ., 45, 5302–5315, 2011.
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, 2013.
Bolton, D.: The computation of equivalent potential temperature, Mon. Weather Rev., 108, 1046–1053, 1980.
Castro, M. S., Moore, C., Sherwell, J., and Brooks, S. B.: Dry deposition of gaseous oxidized mercury in Western Maryland, Sci. Total. Environ., 417–418, 232–240, 2012.
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Short summary
Speciated atmospheric Hg measurements from five high-elevation sites were compared with a global mercury model. The comparison confirmed that reactive mercury is formed in dry free tropospheric air from the oxidation of elemental Hg, more so in the summer than in other seasons. Simulations run with OH-O3 oxidation instead of the Br oxidation mechanism compared more closely with observations at desert sites, suggesting future simulations should include multiple reaction mechanisms simultaneously.
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