Turbulent exchange over a surface with chessboard-type inhomogeneities |
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| Authors: | L R Tsvang M M Fedorov B A Kader S L Zubkovskii T Foken S H Richter Ya Zeleny |
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| Institution: | (1) Institute of Atmospheric Physics of the USSR Academy of Sciences, Moscow, U.S.S.R.;(2) Meteorological Main Observatory of the Meteorological Service of the GDR, Potsdam, Germany;(3) Institute of Atmospheric Physics of the Czechoslovak Academy of Sciences, Czechoslovakia |
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| Abstract: | The results of an experiment carried out in the summer of 1988 in the forest-steppe region of the USSR are given. The aim of the experiment was to study turbulent exchange between the atmosphere and a non-homogeneous underlying surface consisting of a  patchwork quilt of agricultural lands sown with different crops (hereafter called chessboard-type inhomogeneities). Simultaneous measurements of turbulent fluxes of heat, momentum and humidity by the eddy-correlation methods and also the measurements of the mean wind velocity and temperature are described. The values of turbulent fluxes calculated from the profile measurements are in good agreement with those obtained from the eddy-correlation measurements. Thus it may be concluded that the universal functions of Monin-Obukhov similarity theory (determined from measurements over a flat and homogeneous underlying surface) pertain also to a non-homogeneous (chessboard-type) underlying surface. |
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