2.1 Introduction |
Deposition is the ultimate path by which trace gases and particles are removed from the atmosphere. Among these deposited pollutants are compounds which act as nutrients in marine as well as terrestrial ecosystems (or environments). In order to quantify the amount of nutrients deposited in this way it is necessary to understand the governing processes taking place prior to the deposition as well as the deposition process itself. To promote this understanding it is necessary to investigate measurements as well as modelling of atmospheric deposition.
In this chapter the main pathway of nutrients through the atmosphere is described. It ranges from emissions of chemical components over wind-driven transport and chemical transformation in the air to deposition to the surface. This pathway is described in Sources Section to Deposition Section. How the deposition is quantified is covered in Measure Section and Model Section.
2.1 Introduction |