Numerical investigation of the influence of the Caucasus relief on the distribution of hydrometeorological fields |
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| Authors: | A A Kordzadze A A Surmava D I Demetrashvili V G Kukhalashvili |
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| Institution: | (1) Institute of Geophysics, ul. M. Aleksidze 1, Tbilisi, 0193, Georgia |
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| Abstract: | The influence of the Caucasus relief on temporal and spatial variations in meteorological fields is investigated through the numerical integration of nonadiabatic, nonstationary, and nonlinear equations of atmospheric hydrothermodynamics. A dimensionless vertical coordinate is used. In numerical experiments, this coordinate makes it possible to approximate a real relief at a high accuracy and to take into account specific features of a complex orography of the region. The cases of flowing around the relief by large-scale westerly, easterly, northerly, and southerly background winds are modeled. The relief in the lower troposphere is shown to considerably change the spatial structures of large-scale fields of meteorological elements and to form the mesoscale structures of wind, temperature, pressure, and cloudiness that are characteristic of the Caucasus. |
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