The Mechanism of Dissolution of the Atmospheric Chloride into Rain Water

The mechanism of the dissolution of the atmospheric chloride particles into rain drops by their mutual collision has been studied. The results obtained are as follows. 1. Relations among the chloride content per drop, the radius and the number of falling drops have been obtained, assuming that there is no supply of the chloride particles by an exchange or a flow of the air mass, and that the number of falling drops through the unit area per sec. and the radius of rain drops do not vary much. 2. A formula expressing the time variation in the amount of the chloride precipitation in a rain has been deduced. 3. The relation of the chlorinity, C, to the rainfall amount, P, can be expressed as follows: