Modelling the deposition of Reduced Nitrogen at different scales in the United Kingdom

Dore, Anthony J.; Theobald, Mark R.; Kryza, Maciej; Vieno, Massimo; Tang, Sim Y.; Sutton, Mark. A.. 2008 Modelling the deposition of Reduced Nitrogen at different scales in the United Kingdom. In: Borrego, Carlos; Miranda, Ana Isabel, (eds.) Air pollution modelling and its application XIX. Springer, 127-135. (NATO Science for Peace and Security Series C: Environmental Security).

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A national scale atmospheric transport model (FRAME) was applied to the UK to generate maps of ammonia concentration and the wet and dry deposition of reduced nitrogen. The model was found to give satisfactory agreement with measurements from the national monitoring networks of ammonia and ammonium aerosol concentrations and wet deposition of ammonium. Scatter in the model correlation with measurements of ammonia concentration was observed due to the strong sub-model grid (5 km) variation in ammonia concentration. Application of a local dispersion model to calculate ammonia concentrations emitted from a typical poultry unit showed that areas of high concentration were restricted to a 1 km2 area surrounding the point source. FRAME showed good overall agreement with the EMEP model for national average levels of ammonia concentration and reduced nitrogen deposition. However, a difference in spatial patterns of wet deposition occurred due to the different treatment of precipitation in the two models. It was concluded that finer resolution national scale modelling of reduced nitrogen is required in order to improve estimates of critical loads exceedance for acid deposition and nutrient nitrogen deposition. Keywords Ammonia - reduced nitrogen - dry deposition - wet deposition - atmospheric transport model

Item Type: Publication - Book Section
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas: Billett (to November 2013)
ISBN: 9781402084522
Additional Keywords: ammonia, reduced nitrogen, dry deposition, wet deposition, atmospheric transport model
NORA Subject Terms: Atmospheric Sciences
Date made live: 06 Mar 2009 09:54 +0 (UTC)

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