Numerical study of two-dimensional moist symmetric instability

Numerical study of two-dimensional moist symmetric instability

The 2-D version of the non-hydrostatic fully compressible model MOLOCH developed at ISAC-CNR was used in idealized set-up to study the start-up and finite amplitude evolution of symmetric instability. The unstable basic state was designed by numerical integration of the equation which defines satura...

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Main Authors: M. Fantini, P. Malguzzi
Format: Article
Language:English
Published: Copernicus Publications 2008-06-01
Series:Advances in Geosciences
Online Access:http://www.adv-geosci.net/17/1/2008/adgeo-17-1-2008.pdf
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spelling doaj-0998b09a897242e5b88ac9753ef84fe12020-11-24T22:43:30ZengCopernicus PublicationsAdvances in Geosciences1680-73401680-73592008-06-011714Numerical study of two-dimensional moist symmetric instabilityM. FantiniP. MalguzziThe 2-D version of the non-hydrostatic fully compressible model MOLOCH developed at ISAC-CNR was used in idealized set-up to study the start-up and finite amplitude evolution of symmetric instability. The unstable basic state was designed by numerical integration of the equation which defines saturated equivalent potential vorticity q<sub>e</sub><sup>*</sup>. We present the structure and growth rates of the linear modes both for a supersaturated initial state ("super"-linear mode) and for a saturated one ("pseudo"-linear mode) and the modifications induced on the base state by their finite amplitude evolution. http://www.adv-geosci.net/17/1/2008/adgeo-17-1-2008.pdf
collection DOAJ
language English
format Article
sources DOAJ
author M. Fantini
P. Malguzzi
spellingShingle M. Fantini
P. Malguzzi
Numerical study of two-dimensional moist symmetric instability
Advances in Geosciences
author_facet M. Fantini
P. Malguzzi
author_sort M. Fantini
title Numerical study of two-dimensional moist symmetric instability
title_short Numerical study of two-dimensional moist symmetric instability
title_full Numerical study of two-dimensional moist symmetric instability
title_fullStr Numerical study of two-dimensional moist symmetric instability
title_full_unstemmed Numerical study of two-dimensional moist symmetric instability
title_sort numerical study of two-dimensional moist symmetric instability
publisher Copernicus Publications
series Advances in Geosciences
issn 1680-7340
1680-7359
publishDate 2008-06-01
description The 2-D version of the non-hydrostatic fully compressible model MOLOCH developed at ISAC-CNR was used in idealized set-up to study the start-up and finite amplitude evolution of symmetric instability. The unstable basic state was designed by numerical integration of the equation which defines saturated equivalent potential vorticity q<sub>e</sub><sup>*</sup>. We present the structure and growth rates of the linear modes both for a supersaturated initial state ("super"-linear mode) and for a saturated one ("pseudo"-linear mode) and the modifications induced on the base state by their finite amplitude evolution.
url http://www.adv-geosci.net/17/1/2008/adgeo-17-1-2008.pdf
work_keys_str_mv AT mfantini numericalstudyoftwodimensionalmoistsymmetricinstability
AT pmalguzzi numericalstudyoftwodimensionalmoistsymmetricinstability
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