Affiliation:
1. State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science Beijing Normal University Beijing P. R. China
2. CMA Cloud‐Precipitation Physics and Weather Modification Key Laboratory China Meteorological Administration Weather Modification Centre Beijing P. R. China
3. State Key Laboratory of Remote Sensing Science Faculty of Geographical Science Beijing Normal University Beijing P. R. China
4. Beijing Meteorological Observation Centre Beijing Meteorological Bureau Beijing P. R. China
Abstract
AbstractWith the abrupt and significant drop of PM2.5 concentrations during the lockdown in 2020, hourly direct radiation (Rdir) at surface substantially increased in East China, such as Zhengzhou, Wuhan and Baoshan, with the maximum enhancement of 86% at Wuhan. Most of these stations had decreased diffuse radiation (Rdif) except Zhengzhou. Zhengzhou had both enhanced Rdir and Rdif, as well as reduced but still high PM2.5 concentrations, indicating atmospheric particles were more scattering in this region. At Beijing and Harbin in North and Northeast China, intensification of aerosol pollution led to hourly Rdir (Rdif) falling (rising) up to −28% (59%) and −23% (40%), respectively. By contrast, surface solar radiation (SSR) in West China was also greatly influenced by the elevated dust/smoke layers, revealed by aerosol layer vertical distribution and the reduction of SSR and PM2.5 concentrations. This study highlighted the importance of aerosol optical properties and vertical structures in aerosol–radiation interactions.
Publisher
American Geophysical Union (AGU)
Subject
General Earth and Planetary Sciences,Geophysics
Cited by
1 articles.
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