Articles | Volume 17, issue 18
Atmos. Chem. Phys., 17, 11623–11636, 2017
https://doi.org/10.5194/acp-17-11623-2017
Atmos. Chem. Phys., 17, 11623–11636, 2017
https://doi.org/10.5194/acp-17-11623-2017
Research article
28 Sep 2017
Research article | 28 Sep 2017

Atmospheric mercury in the Southern Hemisphere tropics: seasonal and diurnal variations and influence of inter-hemispheric transport

Dean Howard et al.

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Cited articles

Agnan, Y., Dantec, T. L., Moore, C. W., Edwards, G. C., and Obrist, D.: New constraints on terrestrial surface–atmosphere fluxes of gaseous elemental mercury using a global database, Environ. Sci. Technol., 50, 507–524, https://doi.org/10.1021/acs.est.5b04013, 2016.
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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, Atmo. Chem. Phys., 14, 11461–11473, https://doi.org/10.5194/acp-14-11461-2014, 2014.
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, 2016.
Arctic Monitoring and Assessment Programme/United Nations Environment Programme (AMAP/UNEP): Technical Background Report for the Global Mercury Assessment 2013, Arctic Monitoring and Assessment Programme, 2013.
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Short summary
Mercury, a toxic metal, can be transported globally through the atmosphere, with deposition to ecosystems an important pathway to human exposure. 2 years of atmospheric mercury monitoring in tropical Australia supports recent evidence that Southern Hemisphere concentrations are lower than previously thought. Exchange between the atmosphere and ecosystems can take place on daily scales, with night deposition offset by morning re-emission. This could be an important transport pathway for mercury.
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