Decade-low aerosol levels over the Bohai and Yellow Seas amid the COVID-19 lockdown. - RunaA; Tingwei Cui; Song Qing; Ting Wei; Bing Mu; Yanfang Xiao; Yanlong Chen; Yuhai Bao; Jie Zhang (Int. J. Appl. Earth Obs. Geoinformation, 2022)