Articles | Volume 15, issue 18
https://doi.org/10.5194/acp-15-10271-2015
https://doi.org/10.5194/acp-15-10271-2015
Research article
 | 
16 Sep 2015
Research article |  | 16 Sep 2015

Statistical exploration of gaseous elemental mercury (GEM) measured at Cape Point from 2007 to 2011

A. D. Venter, J. P. Beukes, P. G. van Zyl, E.-G. Brunke, C. Labuschagne, F. Slemr, R. Ebinghaus, and H. Kock

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

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.
Baker, P. G. L., Brunke, E.-G., Slemr, F., and Crouch, A. M.: Atmospheric mercury measurements at Cape Point, South Africa, Atmos. Environ., 36, 2459–2465, 2002.
Brunke, E.-G., Scheel, H. E., and Seiler, W.: Trends of tropospheric CO, N2O and CH4 as observed at Cape Point, South Africa, Atmos. Environ., 24A, 585–595, 1990.
Brunke, E.-G., Labuschagne, C., Parker, B., Scheel, H. E., and Whittlestone, S.: Baseline airmass selection at Cape Point, South Africa: application of 222Rn and other filter criteria to CO2, Atmos. Environ., 38, 5693–5702, https://doi.org/10.1016/j.atmosenv.2004.04.024, 2004.
Brunke, E.-G., Slemr, F., Ebinghaus, R., and Kock, H.: Atmospheric Mercury Measurements at Cape Point, South Africa, Clean Air J., 18, 17–21, 2010a.
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Statistical techniques applied to continuous high-resolution Hg data and back-trajectory analyses showed lower GEM concentrations originating from the sparsely populated semi-arid interior of SA and the marine environment, whereas higher GEM concentrations coincided with trade routes and industrial activities along the coast. Multi-linear regression indicated the relation of GEM with other atmospheric parameters. Measured and MLR data confirm a decline in GEM concentrations at CPT GAW station.
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