- Identification: 205/99/1426 - Grant Agency of the Czech Republic
- Duration: 1999 - 2001
- Principal investigator: Ing. Jaroslav Fišák CSc. (Institute of Atmospheric Physics ASCR)
The precipitation from fog or low clouds (so called horizontal precipitation) could represent an important ' hydrological input in our conditions, namely in mountainous regions. Apart from the importance for the hydrological balance of a basin the horizontal precipitation is considered as an significant ecological factor, which affects the entry of pollutants into a basin. Actual experimental studies and meteorological observations show that acidity and pollutant concentration in cloud and/or fog water might be several times higher than in the rain water. The project aims at analyses of fog and cloud water samples in relation to the meteorological conditions of its generation and to the altitude. The pollutant concentration will be analysed at two regions, i.e. North Bohemia (IAP observatory Milešovka, Kopisty) and South Bohemia (IH observatory Nový Dvůr, Churáňov). The realised measurements will be applied to assess the influence of the fog type, pollutant load of a industrial region, and geographical conditions on the pollutant concentration in the fog water and low cloud water.
