particle size distribution

in atmospheric chemistry
The size of the liquid or solid particles in the atmosphere usually extends from \(>0.01\) to \(< 100\ \unicode[Times]{x3BC}\text{m}\) in diameter. In the earth's atmosphere the distribution function which describes the number of particles as a function of diameter, mass or surface area of the @[email protected] can be determined reasonably well with modern instrumentation.
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2205 [Terms] [Paper]