Abstract
Measurements of atmospheric particle size distribution are conducted by use of an ultrahigh-volume cascade impactor. It is found that the size distribution nearly fits a lognormal distribution, and that it also fits a Junge's Size Distribution for a particle diameter larger than 0.2μm and less than 10μm.
Particle size is smaller but the concentration is higher in the winter than in the summer. It is also found that the frequency distribution function f(=-dRw/dDp) decreases with particle diameter, but the frequency distribution function fln(=-dRw/dlnDp) has a minimum value for particle diameter of 1 to 2μm.
