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Short summary
Monitoring of atmospheric mercury (Hg) concentrations is an important part of the effectiveness evaluation of the Minamata Convention on Hg. Hg concentrations in 2012–2017 at Cape Point, South Africa, and at Amsterdam Island in the remote Indian Ocean are comparable, and no trend or a slightly downward trend was observed at both stations. Over the 2007–2017 period an upward trend was observed at CPT which was driven mainly by the 2007–2014 data. The trend and its change are discussed.
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ACP | Articles | Volume 20, issue 13
Atmos. Chem. Phys., 20, 7683–7692, 2020
https://doi.org/10.5194/acp-20-7683-2020

Special issue: Research results from the 14th International Conference on...

Atmos. Chem. Phys., 20, 7683–7692, 2020
https://doi.org/10.5194/acp-20-7683-2020

Research article 02 Jul 2020

Research article | 02 Jul 2020

Atmospheric mercury in the Southern Hemisphere – Part 1: Trend and inter-annual variations in atmospheric mercury at Cape Point, South Africa, in 2007–2017, and on Amsterdam Island in 2012–2017

Franz Slemr et al.

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Bieser, J., Angot, H., Slemr, F., and Martin, L.: Atmospheric mercury in the Southern Hemisphere – Part 2: Source apportionment analysis at Cape Point station, South Africa, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2020-63, in review, 2020. 
Cole, A. S., Steffen, A., Eckley, C. S., Narayan, J., Pilote, M., Tordon, R., Graydon, J. A., Louis, V. L. St., Xu, X., and Branfireun, B. A.: A survey of mercury in air and precipitation across Canada: Patterns and trends, Atmosphere, 5, 635–668, 2014. 
Duncan, B. N., Martin, R. V., Staudt, A. C., Yevich, R., and Logan, J. A.: Interannual and seasonal variability of biomass burning emissions constrained by satellite observations, J. Geophys. Res., 108, 4100, https://doi.org/10.1029/2002JD002378, 2003. 
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Short summary
Monitoring of atmospheric mercury (Hg) concentrations is an important part of the effectiveness evaluation of the Minamata Convention on Hg. Hg concentrations in 2012–2017 at Cape Point, South Africa, and at Amsterdam Island in the remote Indian Ocean are comparable, and no trend or a slightly downward trend was observed at both stations. Over the 2007–2017 period an upward trend was observed at CPT which was driven mainly by the 2007–2014 data. The trend and its change are discussed.
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Final-revised paper
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