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- Title
Acid rain and below-cloud scavenging in south-western China
- Authors
Shen, Zhi-Lai; Lei, Heng-Chi; Huang, Mei-Yuan; Tanner, Peter A.
- Abstract
Major urban areas in south-western China exhibit unique air pollution problems due to increasing use of high sulphur-content fuels in an environment of unfavourable topography and climate. Ambient levels ofsulphur dioxide exceed the air quality objectives, and this gas is the major precursor of acid rain. Cloudwater chemistry studies are reported for urban, suburban and countryside locations, during the period 1985-- 1989. Although cloudwater acidity was found to increase towards the cloud base, the acidity was much greater for rainwater samples collected simultaneously, and was more pronounced in urban rather than neighbouring suburban or countryside regions. The main contribution to the acidity arises from below-cloud scavenging of gas and aerosol and model calculations are able to simulate this behaviour.
- Subjects
CITIES &; towns; AIR pollution; AEROSOLS; ACID precipitation (Meteorology); SULFUR dioxide
- Publication
Journal of Atmospheric Chemistry, 1997, Vol 27, Issue 1, p71
- ISSN
0167-7764
- Publication type
Article