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Modelling the atmospheric transport and deposition of sulphur and nitrogen over the United Kingdom and assessment of the influence of SO2 emissions from international shipping

Dore, A. J.; Vieno, M.; Tang, Y. S.; Dragosits, U.; Dosio, A.; Weston, K. J.; Sutton, M. A.. 2007 Modelling the atmospheric transport and deposition of sulphur and nitrogen over the United Kingdom and assessment of the influence of SO2 emissions from international shipping. Atmospheric Environment, 41 (11). 2355-2367. 10.1016/j.atmosenv.2006.11.013

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Abstract/Summary

A statistical Lagrangian atmospheric transport model was used to generate annual maps of deposition of sulphur and oxidised and reduced nitrogen for the UK at a 5×5 km2 resolution. The model was run using emissions for the year 2002. The model was compared with measurements of gas concentrations (SO2, NOx, HNO3 and NH3) and of wet deposition and aerosol concentrations of SO42−, NO3− and NH4+ from national monitoring networks. Good correlation was obtained, demonstrating that the model is capable of accurately estimating the mass balance and spatial distribution of sulphur and nitrogen compounds in the atmosphere. A future emissions scenario for the year 2020 was used to test the influence of shipping emissions on sulphur deposition in the UK. The results show that, if shipping emissions are assumed to increase at a rate of 2.5% per year, their relative contribution to sulphur deposition is expected to increase from 9% to 28% between 2002 and 2020. The model was compared to both a European scale and a global scale chemical transport model and found to give broad agreement with the magnitude and location of sulphur deposition associated with shipping emissions. Enforcement of the MARPOL convention to reduce the sulphur content in marine fuel to 1% was estimated to result in a 6% reduction in total sulphur deposition to the UK for the year 2020. The percentage area of sensitive habitats with exceedance of critical loads for acidity in the UK was predicted to decrease by 1% with the implementation of the MARPOL convention.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.atmosenv.2006.11.013
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
CEH Sections: Billett (to November 2013)
ISSN: 1352-2310
Additional Information. Not used in RCUK Gateway to Research.: The definitive version of this paper is available at www.elsevier.com
Additional Keywords: atmospheric transport model, acidification, shipping, sulphur, nitrogen, ammonia
NORA Subject Terms: Atmospheric Sciences
Date made live: 18 Dec 2007 14:33
URI: http://nora.nerc.ac.uk/id/eprint/1714

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