6/6 two third of the reduced nitrogen deposition (RDN) is composed of NH3 dry deposition. Total N deposition declines by 15–18% in source regions depending on the scenario, but national average reductions remain modest

5/6 This study focused on annual changes and conclusions might differ if other periods (e.g., daily, monthly, seasonal) are selected for exposure analysis.

4/6 This also suggests that tackling other PM2.5 precursors (solely or combined) or potentially primary PM2.5 might be required to reduce the PM2.5 concentrations

3/6 3 The mitigation measures have an effect on NH3 concentrations (up to 22% for the most ambitious scenario), but their effect is limited for #PM2.5. This is explained by an NH3 enriched #atmosphere. Thus, the scenarios will have little effect on mitigating secondary PM2.5 formation.

2/6 The emission scenarios were developed with the Scenario Modelling Tool www.ricardo.com/en/projects/...). and represented various levels of uptake (low to high) on farms across the #UK in 2030.