A study of annual and seasonal variations in tropospheric ozone (O3) concentrations over India

K Gupta, A Saha - 2020 - preprints.org
K Gupta, A Saha
2020preprints.org
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 (O 3) 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 O 3 gas ie, monthly, seasonal, annual mean variations
of trace gas and also trend analysis of O 3 gas and comparison of the seasonal behavior of …
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 (O 3) 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 O 3 gas ie, monthly, seasonal, annual mean variations of trace gas and also trend analysis of O 3 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 O 3 gas by taking 2006 as a base year and investigate the behaviors of gases during (2007-2015) years. Higher concentrations of O 3 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 O 3 seen due to the less amount of heat and due to cold days and ozone holes in the stratosphere. Instead, total O 3 concentrations rises over Delhi, Lucknow and Kolkata due to large population density, high traffic emission, highly polluted air and larger industrial activities.
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