The Formation of Rain by Coalescence in Very Shallow Cumulus

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Mason, B. J. (2011)

It is demonstrated theoretically that showers may be released by coalescence from shallow cumulus, only 1 km deep, lasting for one hour and having cloud-droplet spectra typical of those measured in clouds formed in clean, maritime air. In clouds formed in more heavily polluted continental air and which have higher concentrations of smaller cloud droplets, the coalescence process is delayed and retarded so that, under otherwise comparable conditions, the time required for shower formation is considerably increased.DOI: 10.1111/j.2153-3490.1959.tb00022.x
  • References (11)
    11 references, page 1 of 2

    BYERS,H. R. and HALL,R. K., 1955: A census of cumulus-cloud height versus precipitation in the vicinity of Puerto Rico during the winter and spring of 1953-4. J. Met. 12, p. 176.

    HOCKINGL,. M., 1959: The collision efficiency of small drops. Quart J. Roy. Met. Sor. 85. p. 44.

    LUDLAMF, . H. and SAUNDERPS., M., 1956: Shower formation in large cumulus. Tellus 8: p. 424.

    MASONB,. J., 1952: The production of rain and drizzle by coalescence in stratiform clouds. Quart. J. Roy. Met. Sor. 7 8 , p. 377.

    MASONB, . J. and GHOSHD,. K., 1957: The formation of large droplets in small cumulus. Quart. J. Roy. Met. SOC. 83, p. 501.

    Tellus XI (1959), 2

    PEARCYT, . and HILL,G. W., 1957: A theoretical estimate of the collection efficiencies of small droplets. Quart. J. Roy. Met. SOC.83, p. 77.

    SQUIRESP, ., 1958: The microstructure and colloidal stability of warm clouds. Tellus 10, p. 256, 262.

    SQUIRESP,. and WARNE RJ., 1957: Some measurements in the orographic cloud of the island of Hawaii and in trade wind cumuli. Tellus, 9. p. 475.

    WOODCOCKA,. H., 1953: Salt nuclei in marine air as a function of altitude and wind force. J. Met. 10 p. 362.

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