Impurity distribution in foggy and low cloud cover conditions

The paper discusses the possibilities of modelling distribution harmful impurities emitted into atmosphere by industrial enterprises in conditions fog and low clouds. With several sources located along a certain line or dispersed over an area, under elevated temperature inversion, which is often observed fogs, additional reasons for increasing pollution surface air layer may appear. Under such conditions, calculations show that distance at maximum concentration increases substantially, decreases very slowly with after its maximum. As result, effect mutual overlapping fields from individual more uniform than convective created area. At same time, even if separate source relatively small, total can be significant.