Open AccessIMPLICIT NONLINEAR NORMAL MODE INITIALIZATION FOR A BAROTROPIC PRIMITIVE EQUATION LIMITED AREA MODEL
Author(s) -
Deepshikha Nair,
B. Chakravarty,
Partha Niyogi
Publication year - 1993
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v44i1.3732
Subject(s) - barotropic fluid , nonlinear system , initialization , shallow water equations , primitive equations , mode (computer interface) , mathematics , mathematical analysis , meteorology , geology , climatology , computer science , physics , partial differential equation , numerical partial differential equations , programming language , operating system , quantum mechanics
A simple version of implicit nonlinear normal mode initialization is applied to a limited area one-level primitive equation model over a tropical domain. The model formulation is based on shallow water equations in spherical co-ordinate and potential enstrophy conserving finite difference scheme is employed. The model is used for predicting the movement of a typical monsoon depression formed over the Bay of Bengal. The above scheme is found to be very effective as it requires only three iterations for attaining balance between the mass and wind tields. However this model is not able to predict the movement of the depression very ac-curately due to the limitations of such a one-level model.