Fog dynamics in an urbanized area

Summary Investigations into regional and temporal variations of fog frequency in the metropolitan area of Munich, Germany, reveal a fog maximum zone in the rural outskirts while the urban area itself represents a local fog minimum. This is an element of urban climate. It can be explained by the typical land use — dependent mesoscale thermal structure and the resulting circulation pattern during winter anticyclonic conditions with widespread fog cover.The phenomenon of a fog maximum zone near an urban area is transferable to large cities in environments which are favourable to radiation fog.With 4 Figures