Cumulonimbus calvus

From Glossary of Meteorology
Revision as of 16:44, 25 April 2012 by imported>Perlwikibot
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



cumulonimbus calvus

A species of cumulonimbus cloud evolving from cumulus congestus.

The protuberances of its upper portion have begun to lose their cumuliform outline; they loom and usually flatten, then transform into a whitish mass with more or less diffuse outlines and vertical striations. Cirriform cloud is not present, but the transformation into ice crystals often proceeds with great rapidity. Most often, this cloud is accompanied by showers. By convention, the name cumulonimbus calvus is given to any highly developed cumuliform cloud that produces lightning, thunder, or hail, although the top shows no obvious trace of transformation into ice. The species calvus is unique to the genus cumulonimbus.


Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.