Changes in the atmospheric deposition of acidifying compounds in the UK between 1986 and 2001

Fowler, D.; Smith, R. I.; Muller, J. B. A.; Hayman, G.; Vincent, K. J.. 2005 Changes in the atmospheric deposition of acidifying compounds in the UK between 1986 and 2001. Environmental Pollution, 137. 15-25.

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Emissions of a precursor of acidity in precipitation, sulphur dioxide (SO2), declined in the UK and the EU (15) by 71% and 72%, respectively, between 1986 and 2001, while nitrous oxide emissions declined by about 40%. Acidity in UK precipitation and the deposition of sulphate in precipitation halved during this period, but reductions were larger in the English Midlands than at the west coast and in high rainfall areas (>2000 mm). There is evidence that the smaller reductions in sulphur deposition in the west and south are due in part to shipping sources of SO2. Reductions in sulphur dry deposition (74%) are larger than in wet deposition (45%), due to changes in the canopy resistance to dry deposition. For reduced nitrogen, there has been a small (10%) reduction in emissions and deposition, while for oxidized nitrogen, a substantial reduction in emissions (40%) occurred but wet deposition of nitrate changed by less than 10%. Deposition of acidity and sulphur in the UK has halved during the last 16 years, and substantial non-linearities in emission-deposition relationships have emerged.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas: _ Atmospheric Sciences
Billett (to November 2013)
ISSN: 0269-7491
Additional Keywords: Acid deposition, Wet deposition, Dry deposition, Trends in air chemistry
NORA Subject Terms: Meteorology and Climatology
Ecology and Environment
Atmospheric Sciences
Date made live: 01 Aug 2008 14:01 +0 (UTC)

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