Importance of meteorology in air pollution events during the city lockdown for COVID-19 in Hubei Province, Central China.

ABSTRACT: Compared with the 21-year climatological mean over the same period during 2000-2020, the aerosol optical depth (AOD) and Angstrom exponent (AE) during the COVID-19 lockdown (January 24-February 29, 2020) decreased and increased, respectively, in most regions of Central-Eastern China (CEC). The AOD (AE) values decreased (increased) by 39.2% (29.4%) and 31.0% (45.3%) in Hubei and Wuhan, respectively, because of the rigorous restrictions. These inverse changes reflected the reduction of total aerosols in the air and the contribution of the increase in fine-mode particles during the lockdown. The surface PM_2.5 had a distinct spatial distribution over CEC during the lockdown, with high concentrations in North China and East China. In particular, relatively high PM_2.5 conce

SUBMITTER: Shen L 

PROVIDER: S-EPMC7473012 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature