The ABL due to a Mountain Pass and Coriolis Effect (CROSBI ID 506623)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Grisogono, Branko ; Enger, Leif ; Belušić, Danijel
engleski
The ABL due to a Mountain Pass and Coriolis Effect
Idealized airflow over a mountain with a pass is studied using a numerical mesoscale model with a trustful higher-order turbulence parameterization scheme. A uniformly stratified inflow of 8 m/s over mountain, 100km x 20km x 1km, yields Froude number 0.6, while Rossby number along the flow ranges from 7.6 to infinity. A pass drops the mountain top to ~ 400m locally increasing Froude number and modifying the overall wave breaking and the ABL. In the presence of the Earth rotation, f ≠ 0, which already breaks the lee-side flow symmetry, the pass induces additional variations in the ABL extending far from the mountain. Both, the rotation and the pass, alter the low-level jet structure and the specific humidity field. This mesoscale process may stretch to synoptic scale within a reasonable time, say 15-25h, only when the rotation is included. Otherwise, a somewhat similar process with f=0 might take unreasonably long time.
Wave-breaking; Coriolis; Low-level jet; Turbulence; Mountain waves; Numerical model
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
329-332-x.
2005.
objavljeno
Podaci o matičnoj publikaciji
Hrvatski meteorološki časopis
Đuričić, Vesna
Zagreb: Hrvatsko meteorološko društvo (HMD)
Podaci o skupu
The 28th International Conference on Alpine Meteorology (ICAM) and the Annual Scientific Meeting of the Mesoscale Alpine Programme (MAP)
poster
23.05.2005-27.05.2005
Zadar, Hrvatska