Conditional instability of the second kind

From Glossary of Meteorology
Revision as of 15:40, 25 April 2012 by imported>Perlwikibot
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

conditional instability of the second kind

(Abbreviated CISK.) A process whereby low-level convergence in the wind field produces convection and cumulus formation, thereby releasing latent heat.

This enhances the convergence and further increases convection. The atmospheric environment that favors CISK is found over warm, tropical oceans where there is an abundant supply of moisture, the Coriolis force is small, and air convergence is strong.

Charney, J. G., and A. Elliasen 1964. On the growth of the hurricane depression. J. Atmos. Sci.. 21. 69–75.

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact [email protected]. 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.