Southern hemisphere stratospheric aerosol measurements: 3. Size distribution 1974–1979

The stratospheric aerosol particle size distribution has been measured at 34°S for the period 1974–1979. Results from two measuring techniques—in situ single‐particle counting and jet impaction—agree well. The size distribution is shown to be described equally well by either a log‐normal or zero‐order logarithmic function. Observed distributions below 22 km agree substantially with model predictions for r >0.1 μm but indicate fewer particles at smaller radii.