Convective instability in a compressible atmosphere

Chitre, S. M. ; Gokhale, M. H. (1973) Convective instability in a compressible atmosphere Solar Physics, 30 (2). pp. 309-318. ISSN 0038-0938

Full text not available from this repository.

Official URL:

Related URL:


The degree of convective instability as expressed by the growth rate ω of linear modes, is calculated for a plane parallel polytropic atmosphere in the presence of radiative damping, without using Boussinesq approximation. A comparison with the results based on the Boussinesq approximation reveals that the use of the Boussinesq approximation leads to an overestimation of the radiative damping. The computation of ω as a function of the horizontal wave number yields a wavelength of maximal instability under a variety of conditions. For reasonable choices of physical parameters appropriate to the solar atmosphere, the fastest growing wavelengths turn out to be in the range 600-1200 km, and their e-folding times are in the range 200-2000 s.

Item Type:Article
Source:Copyright of this article belongs to Springer.
ID Code:88981
Deposited On:30 Mar 2012 06:48
Last Modified:30 Mar 2012 06:48

Repository Staff Only: item control page