On the Cloud Seeding Experiments in Kanto and Chubu Districts in the Summer of 1952

Abstract

Two large scale experiments on cloud seeding were made in the summer of 1952 along the present author's suggestion that silver iodide smoke should be released in less turbulent wind at a high level by the seeding operation on the top of a high mountain. In the experiment of Tokyo Electric Power Company the charcoal burners of silver iodide were employed, and in the experiment of Chubu Electric Power Company the improved light oil furnace type smoke generators after the present author's design were employed. The seedings were more or less effectual in many cases. Two excellent results are illustrated. The lateral and vertical spreadings of silver iodide smoke by turbulent diffusion in the air were known to some extent from the results of the experiments.