Abstract
A two-dimensional meso-scale model has been considered to study mountain drag, momentum and energy fluxes across Khasi-Jayantia hills of India. The general expressions for mountain drag, momentum and energy fluxes are derived for stratified rotating fluid. It is found that decrease of wind speed reduces the magnitude of mountain drag, momentum and energy fluxes. As a result, the flow becomes nearly geostrophic. The study suggests that broaden of mountain or increase in latitude (i.e., increase in f) reduces magnitude of mountain drag, momentum and energy fluxes. When results are compared with stratified non-rotating flow, a significant impact of Coriolis force in the mountain wave is noticed.
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