S. D. Eckermann
Computational Physics, Inc., Fairfax, VA.
A two-dimensional model was used to advect air parcels
under the influence of a linear superposition of hydrostatic
gravity waves. As wave amplitudes increased, vertically profiled
wave perturbations became nonsinusoidal, producing
increased spectral power at large wavenumbers M. At saturation
amplitudes just before onset of convective instabilities, these
``tail spectra'' assumed universal M-3 shapes, similar to
observed spectra in the atmosphere and oceans.