Research of periodical and non-periodical features of electric field components near Nalchik

The complex relationship of time and spatial variations of the electromagnetic field with physical and biogeochemical processes determines the interest of the atmospheric electricity monitoring as a special factor that is an integral characteristic of the state of the atmosphere. The growing of anthropogenic factors role in the formation of electric fields near the earth's surface leads to the need of continuous measurements of the atmospheric electric field and further analysis of the data obtained to identify global, regional and local mechanisms of the global electric circuit. The data of local atmospheric electric field measurements is investigated. The electric field was measured using EFM 550 network sensors installed in the region as part of a thunderstorm monitoring system. Along with the study of periodic (quasi-stationary) components of the atmospheric electric field, the interest of non-stationary processes in disturbed conditions under various meteorological phenomena is increased. Comprehensive monitoring fulfilled at the Nalchik city point for eight years, allowed to establish a number of characteristic features of the behavior of the atmospheric electric field in the surface layer. To analyze time series, the time series decomposition technique was used. The set of graphs obtained for the components of the series is compared with those obtained as a result of standard processing of observations.