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| Title: | Environmental studies of SO2, SPM and NOx, over agra, with various methods of treating calms |
| Authors: | Goyal, P
Singh, M P
Bandyopadhyay, T K |
| Keywords: | emission inventory
dispersion model evaluation
calm wind condition
statistical analysis |
| Issue Date: | 1994 |
| Citation: | Atmospheric Environment, 28 (19), 3113-3123p. |
| Abstract: | A comparative study between predicted and observed concentrations of major pollutants SO2, suspended particulate matter (SPM) and NOx in Agra, India has been undertaken using two Gaussian plume models. A Gaussian plume model (IITLT) and climatological dispersion model (CDM) have been used to estimate long-term concentrations of non-reactive pollutants due to emissions from area and point sources. The IITLT model is designed to treat the calm wind conditions (u < 2 ms−1). The computations show that about 10% of the total concentration of each type of pollutant at each station is due to calm winds alone. Therefore, consideration of calm winds is quite important. A comparative study of various methods of treating calm winds in IITLT model has been made. It is noted that in CDM model the central wind speed of the lowest wind speed class was arbitrarily taken as 1.5 m s−1. This means that light winds or calm winds reported in the first wind speed class (0–1.54 ms−1) are assigned this value.... |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/2518 |
| Appears in Collections: | Atmospheric Sciences [CAS]
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