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Airflow over a two-dimensional escarpment. II: Hydrostatic flow
Journal article   Open access   Peer reviewed

Airflow over a two-dimensional escarpment. II: Hydrostatic flow

R.O. Pitts and T.J. Lyons
Quarterly Journal of the Royal Meteorological Society, Vol.116(492), pp.363-378
1990
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Abstract

Hydrostatically dominated forced flow over the asymmetric topography of the Darling Scarp, Western Australia, is modelled using a hydrostatic numerical mesoscale model and compared with observations. Simulations reproduce the essential features of wave overturning and the development of a shooting hydraulic flow. This response is dependent on the wind profile but not on the existence of a critical level. the high backsheared environment leads to a high ratio of the Brunt-Väisälä frequency to wind speed throughout the profile, resulting in short wavelengths, high nonlinearity and overturning. With the ratio of the halfwidth of the topography to the boundary-layer depth being small, the flow fields are shown to be sensitive to the boundary layer.

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Citation topics
8 Earth Sciences
8.19 Oceanography, Meteorology & Atmospheric Sciences
8.19.113 Weather Forecasting
Web Of Science research areas
Meteorology & Atmospheric Sciences
ESI research areas
Geosciences
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