IMPLICIT NONLINEAR NORMAL MODE INITIALIZATION FOR A BAROTROPIC PRIMITIVE EQUATION LIMITED AREA MODEL

Authors

  • D. R. C. NAIR
  • B. CHAKRAVARTY
  • P. NIYOGI

DOI:

https://doi.org/10.54302/mausam.v44i1.3732

Keywords:

Implicit normal mode initialization, Potential enstrophy, Shallow water model. fi-term, Helmholtz equation, Nonlinear balance equation

Abstract

 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.

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Published

01-01-1993

How to Cite

[1]
D. R. C. . NAIR, B. . CHAKRAVARTY, and . P. . NIYOGI, “IMPLICIT NONLINEAR NORMAL MODE INITIALIZATION FOR A BAROTROPIC PRIMITIVE EQUATION LIMITED AREA MODEL”, MAUSAM, vol. 44, no. 1, pp. 1–8, Jan. 1993.

Issue

Vol. 44 No. 1 (1993): Mausam

Section

Research Papers

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