Preprint Article Version 1 This version is not peer-reviewed

A Study of Annual and Seasonal Variations in Tropospheric Ozone (O3) Concentrations over India

Version 1 : Received: 11 April 2020 / Approved: 12 April 2020 / Online: 12 April 2020 (09:14:12 CEST)

How to cite: Gupta, K.; Saha, A. A Study of Annual and Seasonal Variations in Tropospheric Ozone (O3) Concentrations over India. Preprints 2020, 2020040188 (doi: 10.20944/preprints202004.0188.v1). Gupta, K.; Saha, A. A Study of Annual and Seasonal Variations in Tropospheric Ozone (O3) Concentrations over India. Preprints 2020, 2020040188 (doi: 10.20944/preprints202004.0188.v1).

Abstract

India is one of the large sources of the anthropogenic pollutants and their increasing emission due to the recent economic growth in India. In this study we analyzed the annual and seasonal behaviors of ozone (O3) gas using satellite remote sensing dataset from the sources Ozone Monitoring Instrument (OMI) over India region from 2006-2015. The study focuses on the seasonal behaviors of O3 gas i.e., monthly, seasonal, annual mean variations of trace gas and also trend analysis of O3 gas and comparison of the seasonal behavior of the ozone gas by trend analysis were assessed. In this study we also taken eleven cities to show the increment and decrement in four seasons of O3 gas by taking 2006 as a base year and investigate the behaviors of gases during (2007-2015) years. Higher concentrations of O3 south-to-north gradient, indicating the variations due to the impact of emissions and local meteorology. Ozone concentrations were higher during the warmer months. However, in winter season lowest concentration of O3 seen due to the less amount of heat and due to cold days and ozone holes in the stratosphere. Instead, total O3 concentrations rises over Delhi, Lucknow and Kolkata due to large population density, high traffic emission, highly polluted air and larger industrial activities.

Subject Areas

ozone; OMI; seasonal variations; satellite remote sensing

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