However, there were no key pollutants that affect solar radiation in Shanghai. In Shenyang and Guangzhou, the driving effect of particles on the daily global solar radiation was stronger than that of pollutants. Different key pollutants affected the solar radiation in each city. Further, AQI and solar radiation were negatively correlated, while some pollution components (e.g., O 3) were positively correlated with the daily global solar radiation. The correlation between O 3 and daily global solar radiation was the highest ( r = 0.575), while that between SO 2 and daily global solar radiation was the lowest. Correlation analysis was performed between each pollutant and the daily global solar radiation. A city model (model-C) based on the data of each city and a unified model (model-U) based on national data were established, and the key pollutants under these conditions were identified. Meteorological data, air quality index (AQI) data, and data on the concentrations of six air pollutants (O 3, CO, SO 2, PM 10, PM 2.5, and NO 2) in nine cities in China were considered for analysis. Therefore, this study aimed to analyse the effects of air pollution characteristics on solar radiation. Previous studies have mainly focused on the effects of meteorological factors on solar radiation, but research on the influence of air pollutants is limited. Ground-received solar radiation is affected by several meteorological and air pollution factors. 3Key Laboratory of New Technology for Construction of Cites in Mountain Area, Chongqing University, Chongqing, China. 2Chongqing Real Estate Trading Centre, Chongqing, China.1Faculty of Architecture and Urban Planning, Chongqing University, Chongqing, China.Xinshuo Zhang 1 Mengli Zhang 2 Yong Cui 1 Ying He 1,3 *
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