Spectra of different fluxes over the arid and semiarid zones of northwest India during MONEX 1979

Fluxes of heat, momentum and the kinetic energy over the arid and semiarid regions of Indian Peninsula have been computed. Spectral analysis of these fluxes at 50 mb interval were performed at each level in the vertical up to 300 mb surface. The eddy latent heat transport is governed essentially by short- and long-range periodicities. A 5-day periodicity is generally present in the vertical mean eddy fluxes. Long-range periodic oscillations are more pronounced in the extreme north of the Indian subcontinent. Dominance of medium-range periodicity is observed in all the fluxes except latent heat.