The high-precision solar radiation monitoring system depicted on the cover is located at Nanjing University of Information Science and Technology. It can monitor global horizontal irradiance, diffuse horizontal irradiance (DHI), and direct normal irradiance (DNI). The yellow solid arrows above the monitoring system represent the DNI received by the instrument, while the red dashed arrows indicate the DHI received by the instrument after the sunlight has been scattered by the particulate matter in the atmosphere. Based on the system's datasets, the authors studied the characteristics of surface solar radiation (SSR) and its correlation with air pollution conditions in Nanjing, China. Against the background of frequent air pollution, this research contributes to the understanding of SSR under different air pollution conditions in the face of extreme weather and climate change.