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- Title
Spontaneous Superrotation and the Role of Kelvin Waves in an Idealized Dry GCM.
- Authors
Potter, Samuel F.; Vallis, Geoffrey K.; Mitchell, Jonathan L.
- Abstract
The nondimensional parameter space of an idealized dry primitive equation model is explored to find superrotating climate states. The model has no convective parameterization and is forced using a simple thermal relaxation to a prescribed radiative equilibrium temperature. It is demonstrated that, of four nondimensional parameters that determine the model's state, only the thermal Rossby number has a significant effect on superrotation. The mode that drives the transition to superrotation in an intermediate-thermal-Rossby-number atmosphere is shown to behave like a Kelvin wave in the tropics.
- Subjects
EQUATIONS; ALGEBRA; PARAMETERIZATION; GEOMETRY; EQUILIBRIUM
- Publication
Journal of the Atmospheric Sciences, 2014, Vol 71, Issue 2, p596
- ISSN
0022-4928
- Publication type
Article
- DOI
10.1175/JAS-D-13-0150.1