𝔖 Bobbio Scriptorium
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The formation of large droplets in small cumulus

✍ Scribed by B. J. Mason; D. K. Ghosh

Book ID
104572033
Publisher
John Wiley and Sons
Year
1957
Tongue
English
Weight
429 KB
Volume
83
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

Droplets of radius exceeding 30 ΞΌ are sometimes found in concentrations of order 100/l in non‐precipitating cumulus less than 5,000 ft in depth and having, on average, liquid‐water contents of only a few tenths of a gramme per m^3^. It is shown that droplets of this size may be produced by condensation and coalescence on hygroscopic nuclei of mass greater than 10^βˆ’11^ g entering the bases of such shallow clouds, provided that these last for at least one hour. The published concentrations of giant salt nuclei seem only just sufficient to account for the observed numbers of large droplets, but simultaneous measurements of both are urgently required.

πŸ“œ SIMILAR VOLUMES

The evolution of droplet spectra and lar
The evolution of droplet spectra and large droplets by condensation in cumulus clouds
✍ B. J. Mason; P. R. Jonas πŸ“‚ Article πŸ“… 1974 πŸ› John Wiley and Sons 🌐 English βš– 759 KB

## Abstract The paper describes a relatively simple model of a non‐precipitating cumulus cloud that grows by the ascent of successive spherical thermals through the residues of their predecessors, mixing with the surroundings being determined by the relative velocity and the radius of the thermal.