The Micro-structure of Cumuli in Maritime and Continental Air

Since 1950 a number of measurements have been made of the droplet spectra in clouds, chiefly cumuli, using the sampler described by SQUIRES and GILLESPIE (1952). This device takes ten sampling rods at each loading, and these can be exposed at intervals of about three seconds, taking some thirty seconds in all. In sampling cumuli, the general practice has been to make horizontal runs at various levels, to obtain representative data for the whole cloud.