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Here are results from calculations of deposition of nitrogen to selected natural areas for the year 2005.

A portion of the deposition occurs in the form of dry deposition of ammonia. Carried out detailed calculations for this part using model OML-DEP. The model calculates the deposition of ammonia to an area at 16 km x 16 km around the selected scenery area. The sources of ammonia emissions are largely local agriculture.

The spatial resolution in connection with calculations is on 400 m x 400 m.

Inputs to the model are inter alia: detailed emission inventories with a spatial resolution of 100 m x 100 m. in addition, the model coupled to regional-scale models, which supplies OML-DEP with information about "background level" of ammonia. Background contribution includes ammonia from sources outside the field of 16 km x 16 km.

For 2005 are the calculations made for the areas set out in the table below.

You can view detailed maps of the deposition for these selected areas. The cards are assembled into a document in pdf format (NB! file is very large, about. 6 MB).

Note that the deposition resulting from ammonia as shown on the cards constitutes only a small part of the total nitrogen deposit. To find the total nitrogen deposition, the shown contribution from ammonia must be added to other contributions. These other contributions relate to the deposition of the non-local nitrogen components, and can again be divided into two parts: dry deposition of nitrogen oxides and particulate nitrogen and wet deposition of nitrogen. The table below gives an overview of the magnitude of the 3 contributions.