Abstract
This paper investigates the generation and propagation of spiral bands on an axisymmetric base-state vortex. A linear model is used to study the formation of bands from internal gravity-inertia waves in a barotropic atmosphere. Spiral bands form from random perturbations placed on a vortex with unstable static stability that is equal for ascending and descending motion. This growing mode assumes the characteristics of pseudoadiabatic motion in a conditionally unstable atmosphere due to the coarse vertical resolution of the linear model. Inertial instability and the Coriolis parameter are unimportant for band formation in these linear experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 1714-1729 |
| Number of pages | 16 |
| Journal | Journal of the Atmospheric Sciences |
| Volume | 33 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1976 |