Articles | Volume 18, issue 21
Atmos. Chem. Phys., 18, 15825–15840, 2018
https://doi.org/10.5194/acp-18-15825-2018
Atmos. Chem. Phys., 18, 15825–15840, 2018
https://doi.org/10.5194/acp-18-15825-2018

Research article 05 Nov 2018

Research article | 05 Nov 2018

Understanding mercury oxidation and air–snow exchange on the East Antarctic Plateau: a modeling study

Shaojie Song et al.

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Cited articles

Angot, H.: Cycle atmosphérique du mercure dans des zones reculées de l'Hémisphère Sud: cas de la couche limite marine subantarctique et du continent Antarctique, PhD thesis, Université Grenoble Alpes, 2016. 
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. 
Angot, H., Dastoor, A., De Simone, F., Gårdfeldt, K., Gencarelli, C. N., Hedgecock, I. M., Langer, S., Magand, O., Mastromonaco, M. N., Nordstrøm, C., Pfaffhuber, K. A., Pirrone, N., Ryjkov, A., Selin, N. E., Skov, H., Song, S., Sprovieri, F., Steffen, A., Toyota, K., Travnikov, O., Yang, X., and Dommergue, A.: Chemical cycling and deposition of atmospheric mercury in polar regions: review of recent measurements and comparison with models, Atmos. Chem. Phys., 16, 10735–10763, https://doi.org/10.5194/acp-16-10735-2016, 2016a. 
Angot, H., Dion, I., Vogel, N., Legrand, M., Magand, O., and Dommergue, A.: Multi-year record of atmospheric mercury at Dumont d'Urville, East Antarctic coast: continental outflow and oceanic influences, Atmos. Chem. Phys., 16, 8265–8279, https://doi.org/10.5194/acp-16-8265-2016, 2016b. 
Angot, H., Magand, O., Helmig, D., Ricaud, P., Quennehen, B., Gallée, H., Del Guasta, M., Sprovieri, F., Pirrone, N., Savarino, J., and Dommergue, A.: New insights into the atmospheric mercury cycling in central Antarctica and implications on a continental scale, Atmos. Chem. Phys., 16, 8249–8264, https://doi.org/10.5194/acp-16-8249-2016, 2016c. 
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Mercury is a trace metal with adverse health effects on human and wildlife. Its unique property makes it undergo long-range transport, and even remote Antarctica receives significant inputs. This paper presents the first model that aims to understand mercury behavior over the Antarctic Plateau. We find that mercury is quickly cycled between snow and air in the sunlit period, likely driven by bromine chemistry, and that several uncertain processes contribute to its behavior in the dark period.
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