Impact of aerosol load on solar radiation in the northeast China region

Northeast China is influenced by a diverse range of aerosol sources, including industrial emissions, biomass burning, dust storms, and the transport of mineral dust from the Gobi and Taklamakan deserts. These varying aerosol types interact with solar radiation through scattering and absorption processes. The AERONET sun-sky-lunar CE318-T photometer was recently installed in Changchun in October 2024 to study and monitor aerosol characteristics in this region. This installation marks the beginning of systematic and accurate measurements of aerosol properties in the area, providing a valuable dataset for understanding aerosol behavior. Given the complex interactions between aerosol particles and solar radiation, it is essential to know how different aerosol types influence radiation patterns. For this study, AERONET measurements were compared with data obtained from the set of instruments installed at the SOLYS2 sun tracker. The SOLYS2 is equipped with pyranometers, pyrgeometer, pyrheliometer, and shading ball assembly. This set of sensors captures radiation from the entire hemisphere, including both direct and diffuse radiation from the sun and sky. It allows the measurement of global horizontal irradiance, direct normal irradiance, and diffuse normal irradiance to be provided, enabling a comprehensive analysis of aerosol-radiation interactions in the region. In this work, we investigate how varying aerosol loading impacts solar radiation in this region, focusing on the influence on radiation patterns and overall atmospheric conditions.