Shattering and Particle Interarrival Times Measured by Optical Array Probes in Ice Clouds

In a Bureau of Reclamation report written following the High Plains Experiment (HIPLEX) project Cooper (1977) wrote that one of the rejection criteria for 2D optical probes used in the analysis of the data was that "If the time interval between images corresponds to a spatial distance of less than 2.5 cm, the second image is not accepted." For the Particle Measuring Systems (PMS) 2D precipitation (2D-P) probe and the Stratton Park Engineering Company (SPEC) High Volume Particle Spectrometer (HVPS), Korolev and Isaac (2005) show a correlation between the maximum particle size observed during a given period and the number of images containing multiple fragments during the same period, interpreted as evidence for breakup of particles either on the probe or in the airflow distortion as it passes or enters the probe.