The structure of zonal jets in shallow water turbulence on the sphere
This paper reviews some recent results concerning the formation and structure of zonal jets in forced shallow water turbulence on the surface of a rotating sphere. Attention is given to the role of the Rossby deformation radius in determining the degree to which jets align zonally; to the limiting case of the axisymmetric “potential vorticity staircase”; and to the issue of equatorial superrotation, which is shown to arise robustly when energy is dissipated through a representation of radiative relaxation.
KeywordsRossby Wave Potential Vorticity Giant Planet Relative Vorticity Deformation Radius
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- Iacono, R., Struglia, M. V., Ronchi, C., & Nicastro, S. 1999. High-resolution simulations of freely decaying shallow-water turbulence on a rotating sphere. Il Nuovo Cimento, 22C, 813–821. Google Scholar
- Ingersoll, A. P., Dowling, T. E., Gierasch, P. J., Orton, G. S., Read, P. L., Sanchez-Lavega, A., Showman, A. P., Simon-Miller, A. A., & Vasavada, A. R. 2004. Dynamics of Jupiter’s atmosphere. Cambridge Univ. Press. Pages 105–128. Google Scholar
- Maltrud, M. E., & Vallis, G. K. 1991. Energy spectra and coherent structures in forced two-dimensional and beta-plane turbulence. J. Fluid Mech., 228, 321–342. Google Scholar
- McIntyre, M. E. 1982. How well do we understand the dynamics of stratospheric warmings? J. Meteorol. Soc. Japan, 60, 37–65. Special issue in commemoration of the centennial of the Meteorological Society of Japan, ed. K. Ninomiya. Google Scholar
- World Meteorological Organization. 2007. Scientific Assessment of Ozone Depletion 2006 (Global Ozone Research and Monitoring Project - Report No. 50). Geneva: World Meteorological Organization. Google Scholar