Numerical experiments on the mechanisms for the development and maintenance of long-lived squall lines in dry environments

The mechanisms responsible for the development and maintenance of long-lived squall lines in dry environments are investigated through two-dimensional numerical experiments by using a nonhydrostatic cloud model. The squall line environments are characterized by a low convective available potential e...

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Bibliographic Details
Published in:Journal of the atmospheric sciences 2000-06, Vol.57 (11), p.1718-1740
Main Authors: TAKEMI, T, SATOMURA, T
Format: Article
Language:English
Subjects:
Arid zones
Atmosphere
Clouds
Earth, ocean, space
Environment
Exact sciences and technology
External geophysics
Meteorology
Moisture content
Potential energy
Water in the atmosphere (humidity, clouds, evaporation, precipitation)
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Summary:The mechanisms responsible for the development and maintenance of long-lived squall lines in dry environments are investigated through two-dimensional numerical experiments by using a nonhydrostatic cloud model. The squall line environments are characterized by a low convective available potential energy (CAPE), low moisture content, and a high level of free convection (LFC), which arc based on observations of a squall line over an arid region in China.
ISSN:0022-4928
1520-0469
DOI:10.1175/1520-0469(2000)057<1718:neotmf>2.0.co;2