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Comparison of Mercury Concentrations Measured at Several Sites in the Southern Hemisphere : Volume 14, Issue 22 (03/12/2014)

By Slemr, F.

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Book Id: WPLBN0003978395
Format Type: PDF Article :
File Size: Pages 27
Reproduction Date: 2015

Title: Comparison of Mercury Concentrations Measured at Several Sites in the Southern Hemisphere : Volume 14, Issue 22 (03/12/2014)  
Author: Slemr, F.
Volume: Vol. 14, Issue 22
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Slemr, F., Barret, M., Pfaffhuber, K., Ebinghaus, R., Edwards, G., Brunke, E.,...Powell, J. (2014). Comparison of Mercury Concentrations Measured at Several Sites in the Southern Hemisphere : Volume 14, Issue 22 (03/12/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Max-Planck-Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany. Our knowledge of the distribution of mercury concentrations in air of the Southern Hemisphere was until recently based mostly on intermittent measurements made during ship cruises. In the last few years continuous mercury monitoring has commenced at several sites in the Southern Hemisphere providing new and more refined information. In this paper we compare mercury measurements at several sites in the Southern Hemisphere made over a period of at least one year at each location. Averages of monthly medians show similar although small seasonal variations at both Cape Point and Amsterdam Island. A pronounced seasonal variation at Troll Research Station in Antarctica is due to frequent mercury depletion events in the austral spring. Due to large scatter and large standard deviations of monthly average median mercury concentrations at Cape Grim no systematic seasonal variation could be found there. Nevertheless, the annual average mercury concentrations at all sites during the 2007–2013 period varied only between 0.85 and 1.05 ng m−3. Part of this variability is likely due to systematic measurement uncertainties which we propose can be further reduced by improved calibration procedures. We conclude that mercury is much more uniformly distributed throughout the Southern Hemisphere than the distributions suggested by measurements made onboard ships. This finding implies (a) that trends observed at one or a few sites in the Southern Hemisphere are likely to be representative for the whole hemisphere, and (b) that smaller trends can be detected in shorter time periods. We also report a change of the trend sign at Cape Point from decreasing mercury concentrations in 1996–2004 to increasing concentrations since 2007.

Summary
Comparison of mercury concentrations measured at several sites in the Southern Hemisphere

Excerpt
Aas, W. (Ed.): Data Quality 2004, Quality Assurance, and Field Comparisons, EMEP/CCC-Report 4/2006, NILU, Kjeller, Norway 2006.; Barratt, R. S.: The preparation of standard gas mixtures, Analyst, 106, 817–849, 1981.; Ambrose, J. L., Lyman, S. N., Huang, J., Gustin, M. S., and Jaffe, D. A.: Fast time resolution oxidized mercury measurements during the Reno Atmospheric Mercury Intercomparison Experiment (RAMIX), Environ. Sci. Technol., 47, 7285–7294, 2013.; 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, doi:10.5194/acp-14-11461-2014, 2014.; Brown, R. J. C., Brown, A. S., Yardley, R. E., Corns, W. T., and Stockwell, P. B.: A practical uncertainty budget for ambient mercury vapour measurement, Atmos. Environ., 42, 2504–2517, 2008.; Brunke, E.-G., Labuschagne, C., Parker, B., Scheel, H. E., and Whittlestone, S.: Baseline air mass selection at Cape Point, South Africa: application of 222Rn and other filter criteria to CO2, Atmos. Environ., 38, 5693–5702, 2004.; Brunke, E.-G., Ebinghaus, R., Kock, H. H., Labuschagne, C., and Slemr, F.: Emissions of mercury in southern Africa derived from long-term observations at Cape Point, South Africa, Atmos. Chem. Phys., 12, 7465–7474, doi:10.5194/acp-12-7465-2012, 2012.; Ebinghaus, R., Jennings, S. G., Schroeder, W. H., Berg, T., Donaghy, T., Guentzel, J., Kenny, C., Kock, H. H., Kvietkus, K., Landing, W., Mühleck, T., Munthe, J., Prestbo, E. M., Schneeberger, D., Slemr, F., Sommar, J., Urba, A., Wallschläger, D., and Xiao, Z.: International field intercomparison measurements of atmospheric mercury species, Atmos. Environ., 33, 3063–3073, 1999.; Ebinghaus, R., Slemr, F., Brenninkmeijer, C. A. M., van Velthoven, P., Zahn, A., Hermann, M., O'Sullivan, D. A., and Oram, D. E.: Emission of gaseous mercury from biomass burning in South America in 2005 observed during CARIBIC flights, Geophys. Res. Lett., 34, L08813, doi:10.1029/2006GL028866, 2007.; Ebinghaus, R., Jennings, S. G., Kock, H. H., Derwent, R. G., Manning, A. J., and Spain, T. G.: Decreasing trend in total gaseous mercury observations in baseline air at Mace Head, Ireland, from 1996 to 2009, Atmos. Environ., 45, 3475–3480, 2011.; Slemr, F., Schuster, G., and Seiler, W.: Distribution, speciation, and budget of atmospheric mercury, J. Atmos. Chem., 3, 407–434, 1985.; Gustin, M. S., Huang, J., Miller, M. B., Peterson, C., Jaffe, D. A., Ambrose, J., Finley, B. D., Lyman, S. N., Call, K., Talbot, R., Feddersen, D., Mao, H., and Lindberg, S. E.: Do we understand what the mercury speciation instruments are actually measuring? Results of RAMIX, Environ. Sci. Technol., 47, 7295–7306, 2013.; Hansen, G., Aspmo, K., Berg, T., Edvardsen, K., Fiebig, M., Kallenborn, R., Krognes, T., Lunder, C., Stebel, K., Schmidbauer, N., Solberg, S., and Espen Yttri, K.: Atmospheric monitoring at the Norwegian Antarctic station Troll: measurement programme and first results, Polar Res., 28, 353–363, 2009.; Huang, J., Miller, M. B., Weiss-Penzias, P., and Gustin, M. S.: Comparison of gaseous oxidized Hg measured by KCl-coated denuders, and nylon and cation exchange membranes, Environ. Sci. Technol., 47, 7307–7316, 2013.; Kaiser, R. and Gottschalk, G: Elementare Tests zur Beurteilung von Meßdaten, Bibliographi-\breaksches Institut, Mannheim, 1972.; Kuss, J., Zülicke, C., Pohl, C., and Schneider, B.: Atlantic mercury emission determined from continuous analysis of the elemental mercury sea–air concentration difference within transects between 50° N and 50° S, Global Biogeochem. Cy., 25, GB3021, doi:10.1029/2010GB0

 

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