𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The effect of revised collision efficiencies on the growth of cloud droplets by coalescence

✍ Scribed by J. T. Bartlett

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
378 KB
Volume
96
Category
Article
ISSN
0035-9009

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The collection efficiencies of water drops falling in still air have been recalculated by Hocking and Jonas (1970). In this paper these revised values have been used to estimate the rate of production of large droplets (r > 30 ΞΌm) by coalescence. It is found that there is an increase in the rate of production of droplets with radii of about 20 to 25 ΞΌm compared with the rate calculated using Hocking's earlier (1959) values, but generally a decrease in the rate of production of droplets with radii 20 to 25 ΞΌm. It is also shown that neglecting the small, but finite, collection efficiencies predicted for droplets with radii less than about 15 ΞΌm has negligible effect on the rate of production of larger droplets.

πŸ“œ SIMILAR VOLUMES

The production of showers by the coalesc
The production of showers by the coalescence of cloud droplets
✍ F. H. Ludlam πŸ“‚ Article πŸ“… 1951 πŸ› John Wiley and Sons 🌐 English βš– 918 KB

## Abstract The growth of unusually large cloud droplets by coalescence within isolated convective clouds is examined. It is found that if their initial radii are about 20 ΞΌ or more then growth into raindrops may readily occur. Raindrop nuclei of this size may be provided by spray in maritime air m

The onset of effective coalescence growt
The onset of effective coalescence growth in convective clouds
✍ David B. Johnson πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 626 KB

## Abstract This study examines the microphysical and environmental conditions necessary to support rapid coalescence growth in warm convective clouds. A quantitative threshold for effective coalescence growth can be defined in terms of the mass‐doubling times for growing precipitation embryos.