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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2008-06-01
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| Series: | Advances in Geosciences |
| Online Access: | http://www.adv-geosci.net/17/1/2008/adgeo-17-1-2008.pdf |
| Summary: | 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. |
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| ISSN: | 1680-7340 1680-7359 |