Volume 15, Issue 4

A Study of Urban Heat Island Effect on the Dispersion of Gaseous Pollutants Emitted from the Explosion of Firecrackers During the Diwali Festival in India

Author

Vivek Joseph and Manju Agarwal

Abstract

The present study is an attempt to understand and assess the problem of poor air quality in an urban city developed due to the high emission of gaseous pollutants from the explosion of firecrackers during the Diwali festival in India. We know that the festival falls in the month of October or November and the climatic change plays a vital role in the dispersion of pollutants. It was observed that the urban heat island (UHI) is being formed during the time of festival in most of the urban area. Thus, we considered the effect of UHI in our study. Also, the diffusivity is considered to be temperature dependent. The overall study is divided into two intervals where in the first interval we considered the emission of pollutants in the absence of UHI and in second interval we considered the presence of UHI. The result was tabulated by considering twenty samples of firecrackers as a point sources at different positions which exploded at different times. The two-dimensional advective diffusion equations along with appropriate boundary conditions are used to define the phenomenon. The results so obtained reveals that the UHI plays a vital role in shaping the pollutants concentration. Also, the early formation of UHI aggravate the concentration level to a greater downwind distance and persist for a longer duration.

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DOI

https://doi.org/10.62226/ijarst20262627

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