Diurnal variations of atmospheric electric fields on fair weather days and its correlations with aerosols, wind speed, irradiance, and relative humidity.

The atmospheric electric field (AEF) is an important electrical phenomenon that occurs between the Earth's surface and the ionosphere. It is primarily formed by negative charges on the surface and positive charges in the ionosphere, and is regulated by multiple factors, such as solar activity, meteorological conditions, and air pollution. On the basis of AEF's observational data from fair weather days in the Chenggong district of Yunnan, this study analyzes its daily variation trends, focusing on its correlations with the air quality indicator concentrations of PM2.