Research and analysis

Review of modelling methods of near-field acid deposition

This report reviews the nature of both wet and dry deposition from the perspective of large generating plants and considers the ways in which modelling techniques might be improved.


Review of modelling methods of near-field acid deposition

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The assessment of critical loads for sensitive ecological sites requires the accurate estimation of acid deposition to the ground. There are significant contributions to this from both long and short-range sources. The main research interest has been in the longer range component which has a large particle fraction. Sources at short ranges (up to about 20km), the subject of the present review, produce very variable local concentrations, mainly from the acid gases directly discharged from combustion processes as the time scales are too short for further oxidation to a particulate component.

Published 1 May 2008