A mathematical model for rotating stratified airflow across Khasi-Jayantia hills

Authors

  • NARESH KUMAR India Meteorological Department, New Delhi – 110 003, India
  • S. K. ROY BHOWMIK India Meteorological Department, New Delhi – 110 003, India
  • NASEEM AHMAD Department of Mathematics, Jamia Millia Islamia, New Delhi, India
  • H. R. HATWAR India Meteorological Department, New Delhi – 110 003, India

DOI:

https://doi.org/10.54302/mausam.v56i4.1027

Keywords:

Coriolis force, Energy flux, Mountain drag, Momentum flux, Mountain wave

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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Published

03-10-2005

How to Cite

[1]
N. KUMAR, S. K. ROY BHOWMIK, N. AHMAD, and H. R. HATWAR, “A mathematical model for rotating stratified airflow across Khasi-Jayantia hills”, MAUSAM, vol. 56, no. 4, pp. 771–778, Oct. 2005.

Issue

Vol. 56 No. 4 (2005): MAUSAM

Section

Research Papers

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