PA7201 Earth Observation of the Atmosphere Assignment Sample
In this work, we examine the effects of COVID-19 on air pollution using TROPOMI and MODIS satellite datasets for NO2 and Aerosol Optical Depth (AOD). According to our findings, NO2 levels were reduced by 13% from the time before the lockdown to the time after the lockdown (March 25–May 3rd, 2020). Also, NO2 levels dropped by 19% during the 2020 shutdown compared to the same period in 2018. When it came to NO2 reduction, New Delhi led the way with a 61.74% drop (Potts et al., 2021). During the 2020 lockdown period, the NO2 levels in all seven cities decreased over time, according to the temporal study. The results also showed spatial variations, i.e., the NO2 levels declined exponentially with increasing distance from the city center. The NO2 temporal patterns mirrored those of the AOD signal, although the correlations between the two were low. COVID-19 impacts on NO2 are highlighted in our findings, and these findings may be used to influence pollution reduction initiatives in various cities. The COVID-19 virus began swiftly spreading around the globe in early 2020, with the first case being recorded in India on January 30th, 2020. According to the website, as of May 20th, 2020, there were 61,149 active patients, 42,297 of which had been cured/discharged, and 3,303 had died (Dutta, Kumar & Dubey, 2021).
It’s common knowledge that human activities like driving cars, working in factories, and running power plants contribute significantly to air pollution in many parts of the world. Researchers in Italy, the United States, and Spain have all noted a decline in pollution after the COVID-19 epidemic broke out. From March 25 to May 3, 2020, India was on lockdown because of the COVID-19 epidemic. Pollution in Indian cities decreased as a result. However, the precise reduction in pollution across many Indian cities is not widely recorded, which is why this research is focused on it. Because cities are major sources of air pollution, we concentrated our efforts on 41 of the most populous ones and tracked changes in pollution levels during the lockdown, compared to the year before and to levels before the lockdown.
References
Dutta, V., Kumar, S. & Dubey, D. (2021). Recent advances in satellite mapping of global air quality: evidence during COVID-19 pandemic. Environmental Sustainability 4, 469–487.
https://doi.org/10.1007/s42398-021-00166-w
Potts, D.L., Marais, E.A., Boesch, H., Pope, R.J., Lee, J.D., Drysdale, W.S., Chipperfield, M.P., Kerridge, B.J., Siddans, R., Moore, D.P., &; Remedios, J.J. (2021). Diagnosing air quality changes in the UK during the COVID-19 lockdown using TROPOMI and GEOS-Chem. Environmental Research Letters, 16.
https://doi.org/10.1088/1748-9326/abde5d
Know more about UniqueSubmission’s other writing services:
