id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-351179-of5qgl90	Singh, Ramesh P.	Impact of lockdown on air quality in India during COVID-19 pandemic	2020-07-07		.txt	text/plain	3194	168	62	A pronounced decline in PM(2.5) and AQI (Air Quality Index) is observed over Delhi, Mumbai, Hyderabad, Kolkata, and Chennai and also a declining trend was observed in tropospheric NO(2) concentration during the lockdown period in 2020 compared with the same period in the year 2019. In general, the Northern parts of India are subjected to poor air quality and atmospheric pollution, mainly due to emissions from vehicles, industry, brick kilns, coal-based power plants, and crop residue burning (Singh et al. Also, farmers at many places have started burning crop residue, and long-term transport of dusts during the pre-monsoon season are also being observed, which affects the air quality of Delhi and major cities located in the Indo-Gangetic Plains (IGP). We have carried out the trajectory analysis over Delhi, Mumbai, Hyderabad, Chennai, and Kolkata using the NOAA HYSPLIT model (https://ready.arl.noaa.gov/ HYSPLIT.php) to study the sources of air mass reaching at five locations.	./cache/cord-351179-of5qgl90.txt	./txt/cord-351179-of5qgl90.txt