Lee-vortex formation in free-slip stratified flow over ridges. Part II: Mechanisms of vorticity and PV production in nonlinear viscous wakes

Lee-vortex formation in free-slip stratified flow over ridges. Part II: Mechanisms of vorticity and PV production in nonlinear viscous wakes

The formation of orographic wakes and vortices is studied within the context of numerically simulated viscous flow with uniform basic-state wind and stability past elongated free-slip ridges. The viscosity and thermal diffusivity are sufficiently large that the onset of small-scale turbulence is sup...

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Veröffentlicht in:Journal of the atmospheric sciences 2002-04, Vol.59 (7), p.1166-1181
Hauptverfasser: EPIFANIO, C. C, DURRAN, D. R
Format: Artikel
Sprache:eng
Schlagworte:
Atmosphere
Earth, ocean, space
Exact sciences and technology
External geophysics
Fluid dynamics
Geophysics. Techniques, methods, instrumentation and models
Mathematical models
Meteorology
Other topics in atmospheric geophysics
Ridges
Stratified flow
Thermal diffusivity
Viscous flow
Wind
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Beschreibung
Zusammenfassung:The formation of orographic wakes and vortices is studied within the context of numerically simulated viscous flow with uniform basic-state wind and stability past elongated free-slip ridges. The viscosity and thermal diffusivity are sufficiently large that the onset of small-scale turbulence is suppressed.
ISSN:0022-4928
1520-0469
DOI:10.1175/1520-0469(2002)059<1166:LVFIFS>2.0.CO;2