ACP Atmospheric Chemistry and Physics ACP Atmos. Chem. Phys. 1680-7324 Copernicus Publications Göttingen, Germany 10.5194/acp-9-3397-2009 An emission inventory of sulfur from anthropogenic sources in Antarctica Shirsat S. V. 1 Graf H. F. 1 Department of Geography, University of Cambridge, Cambridge, UK 26 05 2009 9 10 3397 3408 Copyright: © 2009 S. V. Shirsat 2009 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://acp.copernicus.org/articles/9/3397/2009/acp-9-3397-2009.html The full text article is available as a PDF file from https://acp.copernicus.org/articles/9/3397/2009/acp-9-3397-2009.pdf

This paper presents first results of a comprehensive emission inventory of chemical species from anthropogenic activities (power generation, vehicles, ships and aircraft) in Antarctica, covering the 2004–2005 period. <br><br> The inventory is based on estimated emission rates of fuel consumption provided by some of the Antarctic research stations. Since the emission sources have different modes of operation and use a variety of fuel, the emission flux rate of chemical species is calculated by multiplying the fuel consumption value with the density of fuel and appropriate emission factors. A separate inventory is prepared for each anthropogenic emission source in Antarctica. <br><br> Depending on the type of operation, emission rates of SO<sub>2</sub>, and BC (Black Carbon, from shipping only) have been calculated using the above technique. However, only results of SO<sub>2</sub> emissions from each source are presented here. Emission inventory maps of SO<sub>2</sub> depicting the track/path taken by each mobile source are shown. The total annual SO<sub>2</sub> is 158 Mg from power generation and vehicle operations, 3873 Mg from ships and 56 Mg from aircraft for 2004–2005 and these values undergo strong seasonality following the human activity in Antarctica. Though these figures are small when compared to the emissions at most other regions of the world, they are an indication that human presence in Antarctica leads to at least local pollution. The sources are mainly line and point sources and thus the local pollution potentially is relatively strong.

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