Izvestiya, Atmospheric and Oceanic Physics

, Volume 54, Issue 9, pp 1257–1265 | Cite as

The Azimuthal Dependence of the Microwave Emissions of a Water Surface Based on Remote Measurements at the Black Sea

  • D. S. SazonovEmail author
  • A. V. Kuzmin
  • I. N. Sadovsky


This paper presents an analysis of the experimental measurements of the azimuthal anisotropy of the microwave emissions of a rough water surface. The experimental data were obtained using microwave radiometers with operating frequencies of ~37 GHz (a wavelength of ~8 mm) on the oceanographic platform of the Black Sea Hydrophysical Experimental Facility of the Russian Academy of Sciences in the period from 2005 to 2016. This paper describes the azimuthal anisotropy effect, experimental studies, measurement methods, and data processing. A qualitative comparison of the measurement results with the model calculations and other experimental studies of anisotropy was performed. It was shown that there is a strong sensitivity of the variation in the radio emissions of a rough water surface, both to the wind speed and to its direction at different incidence observation angles.


remote sensing azimuthal anisotropy brightness temperature modeling radiometer microwave emission wind speed and direction 



The authors are grateful to the staff of the Earth Studies from Space Department of the SRI RAS who participated in these studies in different years. We would especially like to mention M.N. Pospelov.

This work was supported by the Russian Foundation for Basic Research, grant no. 15-05-08401_a.


  1. 1.
    Aniskovich, V.M., Kuzmin, A.V., Sazonov, D.S., and Khaikin, V.B., A radiometer–polarimeter at a wavelength of 0.8 cm for field and laboratory measurements, Sovrem. Probl. Distantsionnogo Zondirovaniya Zemli Kosmosa, 2016, vol. 13, no. 2, pp. 213–223.CrossRefGoogle Scholar
  2. 2.
    Bespalova, E.A., Veselov, V.M., Glotov, A.A., Militskii, Yu.A., Mirovskii, V.G., Pokrovskaya, I.V., Popov, A.E., Raev, M.D., Sharkov, E.A., and Etkin, V.S., Anisotropy of wind waves from variations of polarized thermal radiation, Dokl. Akad. Nauk SSSR, 1979, vol. 246, no. 6, pp. 1482–1485.Google Scholar
  3. 3.
    Bespalova, E.A., Veselov, V.M., Gershenzon, V.E., Militskii, Yu.A., Mirovskii, V.G., Pokrovskaya, I.V., Raev, M.D., Semin, A.G., Smirnov, N.K., Skach-kov, V.A., Trokhimovskii, Yu.G., Khapin, Yu.B., Chistyakov, V.N., Sharkov, E.A., and Etkin, V.S., Determination of surface wind velocity from measured polarization anisotropy of intrinsic and backscattered microwave radiation, Issled. Zemli Kosmosa, 1982, no. 1, pp. 87–94.Google Scholar
  4. 4.
    Durden, S.L. and Vesecky, J.F., A physical radar cross-section model for a wind-driven sea with swell, IEEE J. Ocean Eng., 1985, vol. OE-10, no. 4, pp. 445–451.CrossRefGoogle Scholar
  5. 5.
    Dzura, M.S., Etkin, V.S., Khrupin, A.S., Pospelov, M.N., and Raev, M.D., Radiometers–polarimeters: Principles of design and applications for sea surface microwave emission polarimetry, in Int. Geosci. Remote Sens. Symp. (IGARSS’92), Houston, Texas, 1992, vol. 2, pp. 1432–1434.Google Scholar
  6. 6.
    Germain, K.St., Poe, G.A., and Gaiser, P.W., Polarimetric emission model of the sea at microwave frequencies and comparison with measurements, Prog. Electromagn. Res., 2002, vol. 37, pp. 1–30. doi 10.2528/PIER01100800CrossRefGoogle Scholar
  7. 7.
    Grechko, S.I., Irisov, V.G., Kuzmin, A.V., Trokhimovskii, Yu.G., and Etkin V.S., Characteristics of intrinsic microwave radiation of the sea surface at grazing angles, Preprint of Space Research Institute, Russ. Acad. Sci., Moscow, 1991, no. 1729.Google Scholar
  8. 8.
    Irisov, V.G., Kuzmin, A.V., Trokhimovskii, Yu.G., and Etkin, V.S., Azimuthal dependence of microwave radiation of the ocean surface at grazing angles, Issled. Zemli Kosmosa, 1990, no. 6, pp. 79–86.Google Scholar
  9. 9.
    Irisov, V.G., Kuzmin, A.V., Pospelov, M.N., Trokhimovskii, Yu.G., and Etkin, V.S., The dependence of sea brightness temperature on surface wind direction and speed. Theory and experiment, in Proc. Int. Geosci. Rem. Sens. Symp. (IGARSS’91), Espoo, Finland, 1991, pp. 1297–1300.Google Scholar
  10. 10.
    Kuzmin, A.V., Goryachkin, Yu.A., Ermakov, D.M., Ermakov, S.A., Komarova, N.Yu., Kuznetsov, A.S., Repina, I.A., Sadovsky, I.N., Smirnov, M.T., Sharkov, E.A., and Chukharev, A.M., The Katsiveli marine hydrographic platform as a subsatellite polygon in the Black Sea, Issled. Zemli Kosmosa, 2009, no. 1, pp. 31–44.Google Scholar
  11. 11.
    Meissner, Th. and Wentz, F.J., The emissivity of the ocean surface between 6 and 90 GHz over a large range of wind speeds and earth incident angles, IEEE Trans. Geosci. Remote Sens., 2012, vol. 50, no. 8, pp. 3004–3026. doi 10.1109/TGRS.2011.2179662CrossRefGoogle Scholar
  12. 12.
    Pospelov, M.N., Polarization radiometry in remote sensing: History and prospects, Sovrem. Probl. Distantsionnogo Zondirovaniya Zemli Kosmosa, 2004, vol. 1, no. 1, pp. 58–69.Google Scholar
  13. 13.
    Repina, I.A., Tikhonov, V.V., Alekseeva, T.A., Ivanov, V.V., Raev, M.D., Sharkov, E.A., Boyarskii, D.A., and Komarova, N.Yu., Electrodynamic model of Arctic ice-cover radiation for solving problems in satellite microwave radiometry, Issled. Zemli Kosmosa, 2012, no. 5, pp. 29–36.Google Scholar
  14. 14.
    Sadovskii, I.N., Kuzmin, A.V., Pospelov, M.N., Sazonov, D.S., and Pashinov, E.V., Experimental studies of the short-wave section of the wind-wave spectrum. Preliminary analysis of radiometric remote measurements, Sovrem. Probl. Distantsionnogo Zondirovaniya Zemli Kosmosa, 2016, vol. 13, no. 5, pp. 55–67.CrossRefGoogle Scholar
  15. 15.
    Sazonov, D.S., Correlation analysis of experimental remote-sensing data and models of microwave rough sea-surface emission, Izv., Atmos. Ocean. Phys., 2017, vol. 53, no. 9, pp. 1174–1184.CrossRefGoogle Scholar
  16. 16.
    Sazonov, D.S., Kuzmin, A.V., and Sadovsky, I.N., Study of the azimuthal anisotropy of intrinsic radiothermal radiation of wind-induced water surface according to CAPMOS experimental data, Preprint of Space Research Institute, Russ. Acad. Sci., Moscow, 2013, no. 2170.Google Scholar
  17. 17.
    Sazonov, D.S., Dulov, V.A., Sadovsky, I.N., Chechina, E.V., and Kuzmin, A.V., Subsatellite measurements of the asymmetry in slopes of gravity wind waves, Ukr. Metrolog. Zh., 2014, no. 1, pp. 54–58.Google Scholar
  18. 18.
    Sazonov, D.S., Kuzmin, A.V., and Sadovsky, I.N., Experimental studies of thermal radiation intensity dependence on near-water wind speed for rough sea surface, Izv., Atmos. Ocean. Phys., 2016, vol. 52, no. 9, pp. 911–919. doi 10.1134/S0001433816090218CrossRefGoogle Scholar
  19. 19.
    Shannon, T.B., Ruf, C.S., and Lyzenga, D.R., An emissivity-based wind vector retrieval algorithm for the Windsat polarimetric radiometer, IEEE Trans. Geosci. Remote Sens., 2006, vol. 44, no. 3, pp. 611–621. doi 10.1109/TGRS.2005.859351CrossRefGoogle Scholar
  20. 20.
    Sharkov, E.A., Remote investigations of atmospheric catastrophes, Izv., Atmos. Ocean. Phys., 2011, vol. 47, no. 9, pp. 1057–1071.CrossRefGoogle Scholar
  21. 21.
    Sterlyadkin, V.V. and Sharkov, E.A., Differential radiothermal methods for determining the vertical profile of water vapor in the Earth’s troposphere and stratosphere, Issled. Zemli Kosmosa, 2014, no. 5, pp. 15–28.Google Scholar
  22. 22.
    Tran, N., Vandemark, D., Ruf, C.S., and Chapron, B., The dependence of nadir ocean surface emissivity on wind vector as measured with microwave radiometer, IEEE Trans. Geosci. Remote Sens., 2002, vol. 40, no. 2, pp. 515–523. doi 10.1109/36.992827CrossRefGoogle Scholar
  23. 23.
    Trokhimovskii, Y.G., Irisov, V.G., Westwater, E.R., Fedor, L.S., and Leuski, V.E., Microwave polarimetric measurements of the sea surface brightness temperature from a blimp during the coastal ocean probing experiment (COPE), J. Geophys. Res., 2000, vol. 105, no. C3, pp. 6501–6516.CrossRefGoogle Scholar
  24. 24.
    Yueh, S.H., Wilson, W.J., Dinardo, S.J., and Li, F.K., Polarimetric microwave brightness signatures of ocean wind direction, IEEE Trans. Geosci. Remote Sens., 1999, vol. 37, no. 2, pp. 949–959.CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • D. S. Sazonov
    • 1
    Email author
  • A. V. Kuzmin
    • 1
  • I. N. Sadovsky
    • 1
  1. 1.Space Research Institute, Russian Academy of SciencesMoscowRussia

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