Open AccessAtmospheric diffusion model for Delhi for regulatory purposes
Author(s) -
R. N. Gupta,
B. Padmanabhamurty
Publication year - 1984
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v35i4.2237
Subject(s) - environmental science , air quality index , sulfur dioxide , pollutant , air pollution , meteorology , atmospheric sciences , hydrology (agriculture) , environmental protection , geography , engineering , chemistry , geology , inorganic chemistry , geotechnical engineering , organic chemistry
To assess the air quality over short periods of the order of an hour to a day of relatively stable pollutants over an urban area, a model has been developed. The steady state Gaussian diffusion equations for point sources and their integration for area sources have been utilised. The maximum concentrations pf sulphur dioxide averaged over 24 hours by this model during any of the four seasons at Delhi due to area and point sources, has not exceeded United States Environmental Protection Agency’s (US EPA) Primary Air Quality. Standards. However, in some pockets in Delhi around Industrial areas, 24-how. maximum concentration exceeded US EPA secondary standards.