The effect of overcast sky upon the local diurnal variation of the Earth's electric field

Abstract

In a previous paper a method of obtaining the local diurnal variation of the Earth's electric field was adopted and a theory to account for the local variation was proposed. In a later paper it was shown that the greatest amplitudes of the local variation occur in clear weather with calm nights and only gentle variable winds during the daytime. Under these conditions, according to the theory, the processes of turbulence, convection, and subsidence have their maximum effect in varying the density of nuclei of condensation in the lower atmosphere. On the other hand, continuous wind was shown to be associated with much smaller amplitudes of the local variation.