Open AccessSpectral integration of a hemispheric barotropic model
Author(s) -
H. S. Bedi
Publication year - 1979
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v30i1.2967
Subject(s) - barotropic fluid , geopotential , spherical harmonics , northern hemisphere , geopotential height , representation (politics) , geology , meteorology , mathematics , mathematical analysis , geophysics , physics , atmospheric sciences , climatology , precipitation , politics , political science , law
A barotropic model for the northern hemisphere is integrated by decomposing the basic horizontal field into a low-order wave spectrum. The spectral representation is in terms of surface spherical harmonics, which takes into account sphericity of the earth's surface in a natural way. The initial input for the model is the stream function spectrum derived from geopotential spectrum through linear balance wind relationship. Inclusion of appropriate amount of divergence in an empirical way improves the overall performance of the model. The performance of the model in relation to persistence is discussed.