Emissions of transboundary air pollutants in the Netherlands, 1990–2013: Netherlands Informative Inventory Report 2015

Calculated ammonia emissions in the Netherlands are still declining over time. However as a result of new research ammonia emissions can be calculated more accurate. This shows that over the whole period 1990-
2013 these emissions are higher than previously assumed. New research shows that emissions from pigs were higher than previously estimated and the manure applied contained more nitrogen, together resulting in higher ammonia emissions from agriculture. Ammonia emissions from road transport were also higher than previously estimated. In addition, following international guidelines, emissions from new sources have also been included, such as from the ripening of crops and from crop residues left on the field. The same holds for ammonia that is emitted following the application of compost and sewage sludge to soils. Calculations of ammonia emissions for the Netherlands show that emission levels are still declining.