Abstract

This article introduces the progress in research on the physical and optical properties of atmospheric aerosols. Through research on the composition, properties and impact of aerosols on climate, environment, and human health, it has been concluded that aerosols have an important impact on climate change and air quality. In addition, this article also introduces the development and application of aerosol measurement technologies and methods, including remote sensing measurements, light scattering measurements, chemical analysis, etc. Finally, this article summarizes the current research results and future research directions, providing a reference for further in-depth research and understanding of the physical and optical properties of aerosols. With the increase in human activities and the acceleration of industrialization, the problem of air pollution is becoming increasingly serious. Atmospheric aerosols are an important component of atmospheric pollution, and their physical and optical properties have an important impact on climate, environment, and human health. Therefore, the study of atmospheric aerosols has become an important research direction. The physical properties of these particles, such as size, shape, density, and color, as well as their optical properties, influence their impact on human health and the environment. The impact of atmospheric aerosols on climate is mainly manifested in two aspects: direct impact and indirect impact. Direct impact refers to the absorption and scattering of solar radiation by aerosols on the earth's surface, thereby affecting the energy balance of the climate system. Indirect effects refer to aerosols acting as cloud condensation nuclei, affecting the formation and characteristics of clouds, and thus affecting the radiation balance of the climate system. To better study and understand the physical and optical properties of atmospheric aerosols, various measurement techniques and methods have been developed. Remote sensing measurements can be used to obtain large-scale aerosol distribution information; light scattering measurements can be used to obtain the size and shape of individual particles; and chemical analysis can be used to determine the composition and origin of particles. The application of these technologies and methods provides strong support for the study of atmospheric aerosols. In short, the study of atmospheric aerosols is of great significance for in-depth understanding and solving of air pollution problems. Through research on the composition and properties of atmospheric aerosols and their impact on climate, environment, and human health, atmospheric pollution can be better understood and controlled. At the same time, it is necessary to further develop and improve existing measurement technologies and methods, strengthen multidisciplinary cooperation, and provide more powerful support for in-depth research on the physical and optical properties of atmospheric aerosols.