Study on the variation of air pollutant concentration and its formation mechanism during the COVID-19 period in Wuhan.

ABSTRACT: To prevent the spread of COVID-19 (2019 novel coronavirus), from January 23 to April 8 in 2020, the highest Class 1 Response was ordered in Wuhan, requiring all residents to stay at home unless absolutely necessary. This action was implemented to cut down all unnecessary human activities, including industry, agriculture and transportation. Reducing these activities to a very low level during these hard times meant that some unprecedented naturally occurring measures of controlling emissions were executed. Ironically, however, after these measures were implemented, ozone levels increased by 43.9%. Also worthy of note, PM_2.5 decreased 31.7%, which was found by comparing the observation data in Wuhan during the epidemic from 8th Feb. to 8th Apr. in 2020 with the same periods in 201

SUBMITTER: Huang C 

PROVIDER: S-EPMC7900775 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature