Volumes  Contents of Volume 17  
Adv. Geosci., 17, 1-4, 2008
www.adv-geosci.net/17/1/2008/
doi:10.5194/adgeo-17-1-2008
© Author(s) 2008. This work is distributed
under the Creative Commons Attribution 3.0 License.


Numerical study of two-dimensional moist symmetric instability

M. Fantini and P. Malguzzi
ISAC-CNR, via Gobetti 101, 40129 Bologna, Italy

Abstract. 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 qe*. 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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Citation: Fantini, M. and Malguzzi, P.: Numerical study of two-dimensional moist symmetric instability, Adv. Geosci., 17, 1-4, doi:10.5194/adgeo-17-1-2008, 2008.   Bibtex   EndNote   Reference Manager    XML
 

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