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Comparing satellite and meteorological data on wind velocity over the Black Sea

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Abstract

Wind-velocity data obtained from in situ measurements at the Golitsyno-4 marine stationary platform have been compared with QuikSCAT scatterometer data; NCEP, MERRA, and ERA-Interim global reanalyses and MM5 regional atmospheric reanalysis. In order to adjust wind velocity measured at a height of 37 m above the sea surface to a standard height of 10 m with stratification taken into account, the Monin–Obukhov theory and regional atmospheric reanalysis data are used. Data obtained with the QuikSCAT scatterometer most adequately describe the real variability of wind over the Black Sea. Errors in reanalysis data are not high either: the regression coefficient varies from 0.98 to 1.06, the rms deviation of the velocity amplitude varies from 1.90 to 2.24 m/s, and the rms deviation of the direction angle varies from 26° to 36°. Errors in determining the velocity and direction of wind depend on its amplitude: under weak winds (<3 m/s), the velocity of wind is overestimated and errors significantly increase in determining its direction; under strong winds (>12 m/s), its velocity is underestimated. The influence of these errors on both spatial and temporal estimates of the characteristics of wind over the Black Sea is briefly considered.

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Authors and Affiliations

  1. Marine Hydrophysical Institute, Russian Academy of Sciences, ul. Kapitanskaya 2, Sevastopol, 299011, Russia

    A. V. Garmashov, A. A. Kubryakov, M. V. Shokurov, S. V. Stanichny, Yu. N. Toloknov & A. I. Korovushkin

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  1. A. V. Garmashov
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  2. A. A. Kubryakov
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  3. M. V. Shokurov
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  4. S. V. Stanichny
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  5. Yu. N. Toloknov
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  6. A. I. Korovushkin
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Correspondence to A. V. Garmashov.

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Original Russian Text © A.V. Garmashov, A.A. Kubryakov, M.V. Shokurov, S.V. Stanichny, Yu.N. Toloknov, A.I. Korovushkin, 2016, published in Izvestiya AN. Fizika Atmosfery i Okeana, 2016, Vol. 52, No. 3, pp. 351–360.

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Garmashov, A.V., Kubryakov, A.A., Shokurov, M.V. et al. Comparing satellite and meteorological data on wind velocity over the Black Sea. Izv. Atmos. Ocean. Phys. 52, 309–316 (2016). https://doi.org/10.1134/S000143381603004X

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  • DOI: https://doi.org/10.1134/S000143381603004X

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