Articles | Volume 20, issue 17
Atmos. Chem. Phys., 20, 10427–10439, 2020
https://doi.org/10.5194/acp-20-10427-2020

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

Atmos. Chem. Phys., 20, 10427–10439, 2020
https://doi.org/10.5194/acp-20-10427-2020
Research article
08 Sep 2020
Research article | 08 Sep 2020

Atmospheric mercury in the Southern Hemisphere – Part 2: Source apportionment analysis at Cape Point station, South Africa

Johannes Bieser et al.

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Cited articles

Amos, H. M., Jacob, D. J., Streets, D. G., and Sunderland, E. M.: Legacy impacts of all-time anthropogenic emissions on the global mercury cycle, Global Biogeochem. Cy., 27, 410–421, https://doi.org/10.1002/gbc.20040, 2013. 
Baker, P. G. L., Brunke, E.-G., Slemr, F., and Crouch, A.: Atmospheric mercury measurements at Cape Point, South Africa, Atmos. Envron. 36, 2459–2465, 2002. 
Brunke, E.-G., Labuschagne, C., Ebinghaus, R., Kock, H. H., and Slemr, F.: Gaseous elemental mercury depletion events observed at Cape Point during 2007–2008, Atmos. Chem. Phys., 10, 1121–1131, https://doi.org/10.5194/acp-10-1121-2010, 2010. 
Carslaw, D. C. and Ropkins, K.: openair – An R package for air quality analysis, Environ. Modell. Softw., 27–28, 52–61, 2012. 
Engström, A. and Magnusson, L.: Estimating trajectory uncertainties due to flow dependent errors in the atmospheric analysis, Atmos. Chem. Phys., 9, 8857–8867, https://doi.org/10.5194/acp-9-8857-2009, 2009. 
Short summary
We use numerical models to determine the origin of air masses measured for elemental gaseous mercury (GEM) at Cape Point (CPT), South Africa. Our analysis is based on 10 years of hourly GEM measurements at CPT from 2007 to 2016. Based on GEM concentration and the origin of the air mass, we identify source and sink regions at CPT. We find, that the warm Agulhas Current to the south-east is the major Hg source and the continent the major sink.
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