Aerosol Concentrations and Their Behaviour During Summer Season at Urawa 1. Relations to Wind

Abstract

The concentrations of small ions, Aitken and Mie particles were measured for 5 months during the sununer season and their relations to wind were investigated. The concentrations tend to increase for small ions and to decrease for Mie particles with the increament of the wind speed, while the Aitken particle concentration is rather insensitive for the wind speed. The direction of the wind influences the concentrations of all the 3 types of aerosols, if the strong aerosol sources are located in certain windward directions.