AIMS Environmental Science, 4(3): 484-501. DOI: 10.3934/environsci.2017.3.484 Received: 13 March 2017 Accepted: 17 May 2017 Published: 22 May 2017 http://www.aimspress.com/journal/environmental Research article Global analysis of carbon disulfide (CS2) using the 3-D chemistry transport model STOCHEM Anwar Khan1, Benjamin Razis1, Simon Gillespie1, Carl Percival2,! and Dudley Shallcross1,* 1 Atmospheric Chemistry Research Group, School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, UK 2 The Centre for Atmospheric Science, The School of Earth, Atmospheric and Environmental Science, The University of Manchester, Simon Building, Brunswick Street, Manchester, M13 9PL, UK ! Now at NASA Jet Propulsion Laboratory, 4800 Oak Grove Dr, Pasadena, CA 91109, USA * Correspondence: Email:
[email protected]; Tel: +44 (0) 117-928-7796. Abstract: Carbon disulfide (CS2), a precursor to the long-lived carbonyl sulphide (OCS) is one of the main contributors to the atmospheric sulfate layer. The annual fluxes from its sources and sinks are investigated using a 3-D chemistry transport model, STOCHEM-CRI. In terms of the flux analysis, the oxidation of CS2 by OH is found to be the main removal process (76–88% of the total loss) and the dry deposition loss contributes 11–24% to the total loss of CS2. The global burden of CS2 was calculated, varying between 6.1 to 19.2 Tg and the lifetime of CS2 was determined to be within the range of 2.8–3.4 days. The global distribution of CS2 found the Northern Hemisphere (NH) continental landmasses to be the areas of concentration maxima with peak concentrations reaching up to 20 ppt during June-July-August (J-J-A) season and 40 ppt during December-January-February (D-J-F) season in anthropogenic source regions.