Premium
Distribution of precipitation and wet deposition around an Island mountain in South‐West Poland
Author(s) -
Blaś M.,
Dore A. J.,
Sobik M.
Publication year - 1999
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49712555314
Subject(s) - orographic lift , precipitation , deposition (geology) , environmental science , scavenging , atmospheric sciences , hydrology (agriculture) , geology , meteorology , geomorphology , chemistry , sediment , geography , biochemistry , geotechnical engineering , antioxidant
Abstract A comparison has been made between measurements of precipitation intensity and chemical composition and a three‐dimensional model of airflow and orographic rainfall enhancement. the ‘seeder‐feeder’ effect is shown to be of importance in rainfall distribution, wet deposition of pollutants and the modification of the chemical composition of rainfall over an isolated island mountain. the results show increases in rainfall of between 30% and 83% over the hill, with the smallest increase corresponding to the presence of a strong inversion layer. the peak rainfall enhancement occurred between 0.5 and 2 km downstream of the summit. The measured concentrations of major ions in the feeder‐cloud droplets were greater than those in seeder rain by factors of between two and five. the scavenging of polluted cap cloud by rain drops resulted in an increase in wet‐deposition rate by factors of between three and five, with the peak deposition occurring approximately 2 km downstream of the hill summit.