Articles | Volume 17, issue 10
Atmos. Chem. Phys., 17, 6353–6371, 2017
Atmos. Chem. Phys., 17, 6353–6371, 2017
Research article
29 May 2017
Research article | 29 May 2017

A new mechanism for atmospheric mercury redox chemistry: implications for the global mercury budget

Hannah M. Horowitz et al.

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Subject: Gases | Research Activity: Atmospheric Modelling | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Alexander, B., Park, R. J., Jacob, D. J., Li, Q. B., Yantosca, R. M., Savarino, J., Lee, C. C. W., and Thiemens, M. H.: Sulfate formation in sea-salt aerosols: Constraints from oxygen isotopes, J. Geophys. Res.-Atmos., 110, D10307,, 2005.
Allard, B. and Arsenie, I.: Abiotic reduction of mercury by humic substances in aquatic system – an important process for the mercury cycle, Water Air Soil Pollut., 56, 457–464,, 1991.
Amyot, M., Mierle, G., Lean, D., and McQueen, D.: Sunlight-Induced Formation of Dissolved Gaseous Mercury in Lake Waters, Environ. Sci. Technol., 28, 2366–2371,, 1994.
Amyot, M., Lean, D. R. S., Poissant, L., and Doyon, M. R.: Distribution and transformation of elemental mercury in the St. Lawrence River and Lake Ontario, Can. J. Fish. Aquat. Sci., 57, 155–163,, 2000.

The requested paper has a corresponding corrigendum published. Please read the corrigendum first before downloading the article.

Short summary
Mercury is a toxic, global pollutant released to the air from human activities like coal burning. Chemical reactions in air determine how far mercury is transported before it is deposited to the environment, where it may be converted to a form that accumulates in fish. We use a 3-D atmospheric model to evaluate a new set of chemical reactions and its effects on mercury deposition. We find it is consistent with observations and leads to increased deposition to oceans, especially in the tropics.
Final-revised paper