Abstract

The NH3 deposition in 1989 on a 5 x 5 km scale in the Netherlands is estimated with an atmospheric transport model. The model input is a detailed NH3 emission map. This emission map is made using emission factors derived by a special commission with representatives of the Ministry of Agriculture and Fishery and the Ministry of Housing, Physical Planning and the Environment. The deposition estimates have been evaluated using concentration measurements in air and in precipitation in areas with high emission density and in heathland and forests.