Spatiotemporal Variation of Nitrogen Dioxide (No2) Over the Region Of Ahmedabad City

ABSTRACT

Nitrogen Dioxide (NO2) monitoring is a necessary step towards the understanding of climate change and public health. In this study, we tried to understand the comparative analysis of variation of NO2 over the region of Ahmedabad city. We have extracted NO2 concentration data for the year 2019 and 2020. The data was collected from both ground-based measurements and satellite based measurements of NO2 concentrations values. The results highlighted complete dynamics of seasonal NO2 concentration during the year 2019 and 2020 including the lockdown effect of COVID-19 outbreak. The validation approach of satellite data, based on cross-correlation analysis with ground data, it provided value of the Pearson correlation factor of 0.613 and correlation coefficients (R2) of 0.376. The huge fall in seasonal trend of NO2 concentration because of the pandemic is also shown in this study. © 2021 IEEE.