Vertical Aspect Ratios and Longevities of Complex Vortices and the Application to GFD Flows and Astrophysical Vortices
Abstract
Theoretical scaling, numerical simulations, and laboratory experiments all show that there is well-defined ratio of the vertical length scale to the horizontal length scale of Gaussian vortices in a rotating, stratified fluid. However, many vortices of interest, especially in GFD, have multiple length scales, e.g., the horizontal major diameter of the Great Red Spot of Jupiter is 10 times greater than its Rossby deformation radius, which sets the horizontal width of its high-speed ring. We examine how theses multiple scales change the aspect ratio and the longevities of vortices, and, in particular, relate these findings to recent Juno satellite observations, which may show that the vertical thickness of the Jovian vortices is significantly greater than a few pressure scale-heights.
- Publication:
-
APS Division of Fluid Dynamics Meeting Abstracts
- Pub Date:
- 2021
- Bibcode:
- 2021APS..DFDH24009M