Vertical structure of the boundary layer: A comparison between land and sea

M.R. Rameshkumar, Y. Sadhuram

Abstract



The structure and the energetics of the boundary layer have been studied simultaneously over land and sea off Goa Coast just before the onset of south west monsoon. The Radiosonde data obtained at 00 GMT (0530 IST) are used in the present computations. The 'Mixing heights' which are useful in studying the atmospheric dispersion characteristics of aerosol and water vapour across the coastal zone, are also studied. The study indicates significant differences in the structure of the boundary layer over land and the sea. The depth of the mixed layer is found to be high over sea than land and this feature can be attributed to the convection at the surface. The maximum mixing height is mainly controlled by the lapse rate in the atmosphere, in addition to the heat input at the surface

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