Responses of the Hadley cell and extratropical troposphere stratification to climate changes simulated with a relatively simple general circulation model

In this paper, responses of the general circulation of the atmosphere to climate changes are simulated with a spectral model. It is shown that as the meridional temperature gradient decreases the Hadley circulation weakens and its boundaries move to the poles. The troposphere height dynamics versus the equilibrium temperature of atmospheric radiation is investigated. A relation between the characteristics determining the baroclinic instability in the atmosphere is obtained.