The study presents the relation between Indian Monsoon rain fall and Energetics of Zonal waves.Daily global wind (u&v) data at 850, 500, 200 hPa for Indian monsoon season(1 June -30 September i,e122 days) of ten years (1997-2006) is extracted from NCEP/NCAR re-analysis field.This dats is decomposed into wave number domain through Fourier Technique. The analysis of the energetics (momentum transport and kinetic energy) of zonal waves indicates that waves 1 and 2 show consistent and significant correlation with daily all India monsoon rainfall. Variance explained by lower tropospheric waves 1 and 2 around 10°N is 85% or more. Whenever the contribution of wave 1 decreases (increases) the contribution of wave 2 increases (decreases) so that the total variance due to both the waves remains around 85%.The results could be useful for developing a statistical model for predicting active/break phases of Indian monsoon.
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