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An Idealized Simulation of the Indian Monsoon Using Primitive‐Equation and Quasi‐Equilibrium Models
Author(s) -
Mawson M. H.,
Cullen M. J. P.
Publication year - 1992
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49711850308
Subject(s) - orography , hydrostatic equilibrium , primitive equations , monsoon , flow (mathematics) , simple (philosophy) , meteorology , convection , mechanics , climatology , geology , mathematics , physics , mathematical analysis , precipitation , differential equation , philosophy , epistemology , quantum mechanics , numerical partial differential equations
An idealized simulation of the Indian monsoon is performed using a prescribed heat source representative of the time‐averaged latent heating due to convection over India, and a simple representation of the east African orography. A quasi‐equilibrium model is used to solve this problem in three dimensions on a sphere. the model is shown to be able to simulate the cross‐equatorial flow and monsoon circulations driven by this problem and to be in good agreement with parallel integrations carried out with a hydrostatic primitive‐equation model except in areas affected by orographically forced gravity waves. the solutions given by these time‐dependent models are in good agreement with those found by using linearized steady‐state equations.