Abstract: Results from laboratory observations of isolated collisions between small precipitation-size drops falling freely at terminal velocity in a refrigerated collision chamber are presented. The average radii of the size pair ...

Abstract: This paper draws attention to the use of readily available, wire cage graphics for inspecting cloud droplet spectra measured using a Forward Light-Scattering Spectrometer Probe. The high resolution cloud droplet spectra ...

Abstract: The influence of charge on coalescence was determined in the laboratory for isolated pairs of 340 and 190 ?m water drops failing freely at terminal velocity. A microcomputer-controlled apparatus was used to produce collisions. ...

Abstract: An exact solution was found for the rate of collisions between raindrops by integrating over a finite drop size range. Collision rates computed from this solution were compared to those computed from a solution obtained ...

Abstract: Laboratory experiments were performed to investigate interactions between small (400?900 ?m) precipitation-size drops at temperatures colder than 0°C. The investigation was accomplished by creating a light shower of ...

Abstract: The development and evaluation of a new computerized technique for classifying drops and graupel in two-dimensional (2D)-image records is described. The method is unique because images are classified as drops or graupel ...

Abstract: A simple objective procedure used exploratively to forecast the occurrence, height, and coalescence activity of summertime convective clouds in Illinois during the cloud-seeding trials of the 1989 Precipitation Augmentation ...

Abstract: Coalescence efficiencies were determined for small precipitation drops falling at terminal velocity in air. A jet of water was broken into drops of two sizes using a piezoelectric transducer. Unwanted drops were charged ...

Abstract: At the heart of the 40-year atmospheric research endeavors of the Illinois State Water Survey have been studies to understand precipitation processes in order to learn how precipitation is modified purposefully and ...

Abstract: Findings are reported from an analysis of AgI seeding effects on individual cumulus congestus clouds in the 1989 Illinois Exploratory Cloud Seeding Experiment. The experiment was designed around a dynamic seeding hypothesis. ...