Seasonal variability of the diurnal cycle of the Black Sea surface temperature from the SEVIRI satellite measurements

V. A. Rubakina✉, A. A. Kubryakov, S. V. Stanichny

Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russian Federation

✉ e-mail: valenru93@mail.ru

Abstract

Introduction. Heat and gas exchange between the ocean and the atmosphere, and stratification and vertical mixing in the sea upper layer are subjected to the diurnal variations of the sea surface temperature.

Data and methods. The data obtained by the scanner SEVIRI in 2015 (time resolution is 1 hour) are used to study seasonal and spatial variability of the sea surface temperature diurnal cycle in the Black Sea.

Results. During a day, the upper layer heats from 6:00 to 17:00 (the highest temperature) and then cools from 19:00 to 5:00 (the next morning) up to its minimum. The largest diurnal deviations of the sea surface temperature from the average seasonal ones are observed in spring-summer (± 0.8 °С), whereas the lowest deviations are typical of the autumn-winter period (± 0.1−0.2 °С). A few cases when the diurnal warming is high were detected and analyzed. In some regions, the amplitude of the sea surface temperature diurnal cycle exceeded 5 °C and reached its extreme values 7–7.2 °C. The low wind speed (less than 4 m/s) is an important reason of these extreme events. The most often intensive diurnal warming is due to the low wind conditions which are highly frequently observed in May. In winter the values of the sea surface temperature diurnal amplitude are minimum and do not exceed 1.5 °C. Since April, they sharply increase and reach their maximum 2.4 °C in May. The most significant sea surface temperature diurnal amplitude is observed in the Black Sea southeast region and in its southwest coastal part. Such spatial distribution is a result of the wind shadow zone which is formed by the Caucasian and Pontic mountains.

Discussion and Conclusions. The features of spatial and seasonal variability of the Black Sea surface temperature diurnal cycle, and its relation to the wind characteristics in different seasons are studied based on the SEVIRI scanner high-frequency measurements.

Keywords

sea surface temperature, SEVIRI, amplitude of diurnal variation, diurnal warming

Acknowledgements

The features of seasonal variability of the SST diurnal variation are determined at support of the RFBR grant No.17-05-41102 RGO_a. Relation between the SST diurnal variation and the wind characteristics is studied at support of the RFBR grant No. 16-35-60036 mol_a_dk. The data are analyzed and processed within the state task on the theme No. 0827-2018-0002.

Original russian text

Original Russian Text © V. A. Rubakina, A. A. Kubryakov, S. V. Stanichny, 2019, published in MORSKOY GIDROFIZICHESKIY ZHURNAL, Vol. 35, Iss. 2, pp. 171–184 (2019)

For citation

Rubakina, V.A., Kubryakov, A.A. and Stanichny, S.V., 2019. Seasonal Variability of the Diurnal Cycle of the Black Sea Surface Temperature from the SEVIRI Satellite Measurements. Physical Oceanography, 26(2), pp. 157-169. doi:10.22449/1573-160X-2019-2-157-169

DOI

10.22449/1573-160X-2019-2-157-169

References

  1. Meredith, E.P., Semenov, V.A., Maraun, D., Park, W. and Chernokulsky, A.V., 2015. Crucial Role of Black Sea Warming in Amplifying the 2012 Krymsk Precipitation Extreme. Nature Geoscience, [e-journal] 8(8), pp. 615-619. doi:10.1038/ngeo2483
  2. Efimov, V.V. and Barabanov, V.S., 2009. Breeze Circulation in the Black-Sea Region. Physical Oceanography, [e-journal] 19(5), pp. 289-300. https://doi.org/10.1007/s11110-010- 9054-6
  3. Efimov, V.V. and Krupin, A.V., 2016. Breeze Circulation in the Black Sea Region. Russian Meteorology and Hydrology, [e-journal] 41(4), pp. 240-246. https://doi.org/10.3103/S1068373916040026
  4. Marullo, S., Minnett, P.J., Santoleri, R. and Tonani, M., 2016. The Diurnal Cycle of Sea- Surface Temperature and Estimation of the Heat Budget of the Mediterranean Sea. Journal of Geophysical Research: Oceans, [e-journal] 121(11), pp. 8351-8367. https://doi.org/10.1002/2016JC012192
  5. Grodsky, S.A., Kudryavtsev, V.N., Bentamy, A., Carton, J.A. and Chapron, B., 2012. Does Direct Impact of SST on Short Wind Waves Matter for Scatterometry? Geophysical Research Letters, [e-journal] 39(12), L12602. https://doi.org/10.1029/2012GL052091
  6. Meissner, T., Wentz, F., Hilburn, K., Lagerloef, G. and Le Vine, D., 2012. The Aquarius Salinity Retrieval Algorithm. In: IEEE, 2012. 2012 IEEE International Geoscience and Remote Sensing Symposium: Proceedings. Munich, pp. 386-388. doi:10.1109/IGARSS.2012.6351557
  7. Greenwald, T.J., Stephens, G.L., Vonder Haar, T.H. and Jackson, D.L., 1993. A Physical Retrieval of Cloud Liquid Water over the Global Oceans Using Special Sensor Microwave/Imager (SSM/I) Observations. Journal of Geophysical Research: Atmospheres, [e-journal] 98(D10), pp. 18471-18488. https://doi.org/10.1029/93JD00339
  8. Castro, S.L., Wick, G.A. and Buck, J.J.H., 2014. Comparison of Diurnal Warming Estimates from Unpumped Argo Data and SEVIRI Satellite Observations. Remote Sensing of Environment, [e-journal] 140, pp. 789-799. https://doi.org/10.1016/j.rse.2013.08.042
  9. Gentemann, C.L., Minnett, P.J., Le Borgne, P. and Merchant, C.J., 2008. Multi-Satellite Measurements of Large Diurnal Warming Events. Geophysical Research Letters, [e-journal] 35(22), L22602. https://doi.org/10.1029/2008GL035730
  10. Marullo, S., Santoleri, R., Banzon, V., Evans, R.H. and Guarracino, M., 2010. A Diurnal- Cycle Resolving Sea Surface Temperature Product for the Tropical Atlantic. Journal of Geophysical Research: Oceans, [e-journal] 115(C5), C05011. https://doi.org/10.1029/2009JC005466
  11. Merchant, C.J., Filipiak, M.J., Le Borgne, P., Roquet, H., Autret, E., Piollé, J.‐ F. and Lavender, S., 2008. Diurnal Warm-Layer Events in the Western Mediterranean and European Shelf Seas. Geophysical Research Letters, [e-journal] 35(4), L04601. https://doi.org/10.1029/2007GL033071
  12. Filipiak, M.J., Merchant, C.J., Kettle, H. and Le Borgne, P., 2012. An Empirical Model for the Statistics of Sea Surface Diurnal Warming. Ocean Science, [e-journal] 8(2), pp. 197-209. https://doi.org/10.5194/os-8-197-2012
  13. Karagali, I. and Høyer, J.L., 2014. Characterisation and Quantification of Regional Diurnal SST Cycles from SEVIRI. Ocean Science, [e-journal] 10(5), pp. 745-758. https://doi.org/10.5194/os-10-745-2014
  14. Akimov, E.A., Stanichny, S.V. and Polonsky, A.B., 2014. Ispol'zovanie Dannykh Skanera SEVIRI Dlya Otsenki Temperatury Poverkhnostnogo Sloya Chernogo Morya [Application of SEVIRI Scanner Data for Temperature Estimation of the Surface Layer of the Black Sea]. Morskoy Gidrofizicheckiy Zhurnal, (6), pp. 37-46 (in Russian).
  15. Saunders, P.M., 1967. The Temperature at the Ocean-Air Interface. Journal of the Atmospheric Sciences, [e-journal] 24(3), pp. 269-273. doi:10.1175/1520- 0469(1967)024<0269:TTATOA>2 0.CO;2
  16. Dee, D.P., Uppala, S.M., Simmons, A.J., Berrisford, P., Poli, P., Kobayashi, S., Andrae, U., Balmaseda, M.A. and Balsamo, G. [et al.], 2011. The ERA-Interim Reanalysis: Configuration and Performance of the Data Assimilation System. Quarterly Journal of the Royal Meteorological Society, [e-journal] 137(656), pp. 553-597. doi:10.1002/qj.828
  17. Garmashov, A.V., Kubryakov, A.A., Shokurov, M.V., Stanichny, S.V., Toloknov, Yu.N., Korovushkin, A.I., 2016. Comparing Satellite and Meteorological Data on Wind Velocity over the Black Sea. Izvestiya, Atmospheric and Oceanic Physics, [e-journal] 52(3), pp. 309- 316. https://doi.org/10.1134/S000143381603004X
  18. Efimov, V.V. and Anisimov, A.E., 2011. Climatic Parameters of Wind-Field Variability in the Black Sea Region: Numerical Reanalysis of Regional Atmospheric Circulation. Izvestiya, Atmospheric and Oceanic Physics, [e-journal] 47(3), pp. 350-361. https://doi.org/10.1134/S0001433811030030
  19. Il'in, Yu.P., Repetin, L.N., Belokopytov, V.N., Goryachkin, Yu.N., D'yakov, N.N., Kubryakov, A.A. and Stanichny, S.V., 2012. Gidrometeorologicheskie Usloviya Morey Ukrainy. T. 2. Chernoye More [Hydrometeorological Conditions of the Seas of Ukraine. Vol. 2. Black Sea]. Sevastopol: 421 p. (in Russian).
  20. Zatsepin, A.G., Kremenetskiy, V.V., Piotukh, V.B., Poyarkov, S.G., Ratner, Yu.B., Soloviev, D.M., Stanichnaya, R.R., Stanichny, S.V. and Yakubenko, V.G., 2008. Formation of the Coastal Current in the Black Sea Caused by Spatially Inhomogeneous Wind Forcing upon the Upper Quasi-Homogeneous Layer. Oceanology, [e-journal] 48(2), pp. 159-174. https://doi.org/10.1134/S0001437008020021
  21. Efimov, V.V. and Barabanov, V.S., 2017. Anomalies of the Black Sea Surface Temperature and Modeling of Intense Cold Anomaly Formation in September 2014. Izvestiya, Atmospheric and Oceanic Physics, [e-journal] 53(3), pp. 343-351. https://doi.org/10.1134/S0001433817030057
  22. Efimov, V.V. and Komarovskaya, O.I., 2017. Formirovanie Krupnomasshtabnoj Holodnoj Anomalii Poverhnostnoj Temperatury Chernogo Morja po Sputnikovym Dannym [Formation of the Cold Long-Lasting Аnomaly of Black Sea Surface Temperature According to Satellite Data]. Current Problems in Remote Sensing of the Earth from Space, 14(7), pp. 238-249. doi:10.21046/2070-7401-2017-14-7-238-249 (in Russian).
  23. Efimov, V.V., Stanichnyi, S.V., Shokurov, M.V., Yarovaya, D.A., 2008. Observations of a Quasi-Tropical Cyclone over the Black Sea. Russian Meteorology and Hydrology, [e- journal] 33(4), pp. 233-239. https://doi.org/10.3103/S1068373908040067
  24. Clayson, C.A. and Bogdanoff, A.S., 2013. The Effect of Surface Temperature Warming on Climatological Air–Sea Fluxes. Journal of Climate, [e-journal] 26(8), pp. 2546-2556. https://doi.org/10.1175/JCLI-D-12-00062.1

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