Units: µg m-3
Resolution: 5 km
Year: 2019 - 2021 (3 year average)
Data provided by: Centre for Ecology and Hydrology, Edinburgh
Additional Info:
Ammonia concentrations are provided by the National Ammonia Monitoring Network www.pollutantdeposition.ceh.ac.uk/networks ) at 72 sites. However, given the high degree of spatial variation in ammonia concentrations, mapped estimates based on simple interpolation are very uncertain. Therefore, the mapped estimates used by NEGTAP, and this simple site assessment tool, are derived using the network measurements to calibrate the NH3 concentration estimates of the FRAME atmospheric dispersion model, which spatially estimates NH3 emissions at a 5 km grid resolution.
References:
Smith R.I., Fowler D., Sutton M.A., Flechard C. and Coyle M. (2000): Regional Estimation of Gas Deposition in the UK: model description, sensitivity analyses and output. Atmospheric Environment 34, 3757 - 3777.
NEGTAP (National Expert Group on Transboundary Air Pollution) 2001: Transboundary Air Pollution: Acidification, Eutrophication and Ground-Level Ozone in the UK. ISBN 1 870393 61 9. Available online.
Sutton M.A., Tang Y.S., Dragosits U., Fournier N., Dore T., Smith R.I., Weston K.J. and Fowler D. (2001b) A spatial analysis of atmospheric ammonia and ammonium in the UK. The Scientific World.