Physics – Geophysics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983papge.121..685p&link_type=abstract
Pure and Applied Geophysics PAGEOPH, Volume 121, Issue 4, pp.685-705
Physics
Geophysics
1
Barotropic Vorticity Equation, Zonal Fourier Analysis, Scale Analysis
Scientific paper
An estimate of the magnitudes of the absolute vorticity advection terms and the terms in the balance equation suggest that the use of the barotropic vorticity equation within 5 degrees of latitude of the equator is not very good and that the linear balance equation is as good as the nonlinear balance equation in the equatorial region. Zonal Fourier analysis has revealed that the contribution from planetary scale waves is much larger than that from synoptic scale waves, being more in the winter hemisphere than in the summer hemisphere. In classical scale analysis there must be a distinction in wavelength between the zonal and the meridional directions for planetary scale waves. This distinction does not appear to be necessary for synoptic scale waves.
Asnani G. C.
Kiangi M. R. P.
Pyuzza N. D.
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