Method for determining atmospheric motion characteristics using measurements on geostationary meteorological satellites |
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Authors: | A F Nerushev E K Kramchaninova |
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Institution: | 1.Research and Production Association (NPO) Typhoon,Obninsk, Kaluga oblast,Russia;2.Scientific Research Center of Space Hydrometeorology Planeta,Moscow,Russia |
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Abstract: | The method for determining the dynamic characteristics of the atmosphere using the data of sounding from geostationary meteorological
satellites developed by the authors and based on using inhomogeneities of the conservative admixture concentration field as
tracers and on applying the correlation extreme algorithms is described in detail. The accuracies in calculating the horizontal
wind velocity vector (V) and coefficient of horizontal mesoscale turbulent diffusion (K
d
) are estimated on the basis of processing the data of sounding the atmosphere with a SEVIRI (Spinning Enhanced Visible and
Infrared Imager) radiometer on the Meteosat-8 and Meteosat-9 European geostationary meteorological satellites in the water
vapor channels centered at 6.2 and 7.3 μm and on comparing the results with the data of independent observations and theoretical
models. It is indicated that the accuracy in calculating V using the developed method almost coincides with the accuracy of the commonly used foreign methods. In contrast to the methods
applied abroad, the developed method makes it possible to determine not only the wind velocity vector field but also the coefficient
of mesoscale turbulent diffusion and vorticity on one scale of air mass motion. |
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