## Abstract Analysis of stratiformβcloud data from routine aircraft ascents made at Aldergrove during 1942β4 and of groundβstation records of precipitation reveals that __drizzle__ fell predominantly from clouds warmer than β5Β°C and thicker than 600 m, suggesting growth of drops by coalescence. Rai
Precipitation growth in stratiform clouds
β Scribed by R. Wexler
- Publisher
- John Wiley and Sons
- Year
- 1952
- Tongue
- English
- Weight
- 531 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0035-9009
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β¦ Synopsis
Abstract
The radar observations along the vertical of precipitation in stratiform clouds are compared with the theoretical growth rates of ice crystals in such clouds. The analysis indicates that no liquid water exists in these clouds at levels above about β5Β°C. The variation of signal strength from the β3Β°C level through the βbright bandβ and the dropβsize distribution in the rain measured at the ground can be satisfied by reasonable assumptions concerning the coalescence of ice crystals.
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## Abstract Calculations have been made of the rate at which droplets originating on salt nuclei of given mass grow by both condensation and coalescence with smaller droplets in layer clouds of given uniform updraught, mean temperature, supersaturation and liquidβwater content; also of the rate at
## Abstract Statistical characteristics of 584 liquid water content (LWC) profiles collected mainly in midlatitude supercooled stratiform frontal clouds during five field campaigns are presented. It has been found that the majority (55%) of liquid layers have thickness less than 500 m and the depth