Fair Weather and Electric Field Convective Generator

Atmospheric electricity measurements are very sensitive to weather conditions. Fair weather for atmospheric electricity in Kamchatka (Russia) was determined by the method of expert assessment at an observatory. After the transition to automated digital methods for measuring meteorological parameters, the necessity to determine the criteria of fair weather appeared. In this paper we developed the criteria for fair weather based on digital measurements in summer and winter observation periods in view of a limited set of meteorological instruments. Data base of fair weather since 2009 up to the present time was created. We suggest the algorithm to determine fog during a day on the basis of air humidity measurements. Morning convective generator effect occurs sometimes in the diurnal variation of atmospheric electricity. The morning convection maximum is determined by the sunrise time. This entails the problems of averaging the electric field diurnal variation over a long time period. It is suggested to take into account the days with morning convective generator effect and the days without this effect separately when processing data long series.