The spatial distribution of ammonia, methane and nitrous oxide emissions from agriculture in the UK 2017

Annual report to Defra (Project SCF0107), modelling and mapping UK ammonia and greenhouse gas emissions from agriculture. • Agricultural emissions of ammonia, methane and nitrous oxide for 2017 were spatially distributed across the UK, and maps produced. • Emission estimates produced for the 2017 inventory are based on an agricultural emissions model developed by ADAS, Rothamsted Research and Cranfield University. • Non-disclosive agricultural emission maps were produced at a grid resolution of 1 km by 1 km, using detailed agricultural census data, land cover data (Rowland et al., 2017), agricultural practice information (e.g. fertiliser application rates, stocking densities) and emission source strength data from the UK emissions inventories for agriculture 2017 (Misselbrook and Gilhespy 2019 and Brown et al. 2019). • All emission maps correspond to the totals reported by Rothamsted Research North Wyke (RResNW) for 2017.