Modelling and mapping of exceedance of critical loads and critical levels for acidification and eutrophication in the UK 2013-2016. Final report

This report covers the work of the original contract (2013-15) and the following one-year extension (2015-16). The overall purpose of this project was to maintain, and where appropriate update, the UK critical loads database, and to provide estimates of critical load and critical level exceedance based on current pollutant deposition or concentrations, and scenarios for the future. The exceedance results were used to inform policy makers on the areas of sensitive habitats and designated sites potentially at risk from air pollution and were updated annually to provide a UK indicator of the impacts of air pollution on ecosystems. The project also supported the UK National Focal Centre (NFC) for critical loads modelling and mapping. The 1-year extension to this contract additionally included the biodiversity modelling required to enable the UK NFC to begin work in preparation for responding to the 2015-17 “Call for Data” under the UNECE Convention on Long-Range Transboundary Air Pollution (CLRTAP).