Rainfall rate and electric charge and size of raindrops of six spring showers.

Abstract

6 spring showers were investigated. Individual electric charges between 5 and 100 pC have been measured on raindrops up to 4 mm in diameter. The data reduction shows that each shower must be studied separately, using several parameters. Under these conditions, there are two distinct types of precipitation, according to the sign of the charge excess they provide. The total charge carried down by each shower is primarily determined by the greater number of drops of one sign as compared to the other sign. -from Authors