Spontaneous Superrotation and the Role of Kelvin Waves in an Idealized Dry GCM
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, o...
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| Veröffentlicht in: | Journal of the atmospheric sciences 2014-02, Vol.71 (2), p.596-614 |
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| container_end_page | 614 |
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| container_title | Journal of the atmospheric sciences |
| container_volume | 71 |
| creator | Potter, Samuel F Vallis, Geoffrey K Mitchell, Jonathan L |
| description | 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 models 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. |
| doi_str_mv | 10.1175/JAS-D-13-0150.1 |
| format | Article |
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| ispartof | Journal of the atmospheric sciences, 2014-02, Vol.71 (2), p.596-614 |
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| source | American Meteorological Society; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Atmosphere Drying Earth Kelvin waves Mathematical models Meteorology Parametrization Primitive equations Studies Superrotation Thermal relaxation Tropical environments Tropics |
| title | Spontaneous Superrotation and the Role of Kelvin Waves in an Idealized Dry GCM |
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