id author title date pages extension mime words sentences flesch summary cache txt cord-029527-6vhhi54g Siddiqui, Asfa COVID-19 Pandemic and City-Level Nitrogen Dioxide (NO(2)) Reduction for Urban Centres of India 2020-07-22 .txt text/plain 3077 175 54 The present research focuses on analysing the gaseous pollution scenarios, before and during lockdown through satellite (Sentinel-5P data sets) and ground-based measurements (Central Pollution Control Board's Air Quality Index, AQI) for 8 five-million plus cities in India (Delhi, Ahmedabad, Kolkata, Mumbai, Hyderabad, Chennai, Bengaluru and Pune). The respiratory illness symptoms and mortality due to prolonged exposure to gaseous pollutants like nitrogen dioxide (NO 2 ), sulphur dioxide (SO 2 ), particulate matter (PM), carbon monoxide (CO), etc., have been reported earlier in India and around the world in several studies (Abbey et al. The objective of this research was to analyse the effect of lockdown on improving the levels of air pollution in various cities across India using satellite-derived spatiotemporal data sets and ground-based measurements. Additionally, to understand the effect of long term exposure of NO 2 on human health, COVID-19 positive cases and number of deaths was obtained for all districts around the country of India as on 18 May 2020. ./cache/cord-029527-6vhhi54g.txt ./txt/cord-029527-6vhhi54g.txt