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On the Change in the Ocean Surface Temperature in the Benguela Upwelling Region. Part I: Season Cycle

  • USE OF SPACE INFORMATION ABOUT THE EARTH STUDYING SEAS AND OCEANS FROM SPACE
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Abstract

Based on the daily satellite imagery data on the ocean surface temperature for 1982–2017, near-surface wind for 1988–2017 and sea-level anomalies for 1993–2017, the seasonal variability of the hydrothermodynamic characteristics of the upper water layer in the vicinity of the Benguela upwelling is investigated. It is shown that the thermal upwelling index averaged over the entire area with lower temperature values does not provide a correct idea of the seasonal course of the water lifting rate in the upwelling zone due to the significant horizontal advection of waters of upwelling origin. The seasonal variation in the vertical velocity of wind origin in the Benguela upwelling zone is characterized by the presence of two extremums from October to March, which is manifested in the dominance of the semiannual harmonic over the annual one. At the same time, the thermal upwelling index in the zone of distribution of upwelling waters is subject to seasonal variability with an annual period.

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REFERENCES

  1. Bakun, A. and Nelson, C.S., The seasonal cycle of wind-stress curl in subtropical eastern boundary current regions, J. Phys. Oceanogr., 1991, vol. 21, pp. 1815–1834. https://doi.org/10.1175/1520-0485

    Article  Google Scholar 

  2. Blanke, B., Speich, S., Bentamy, A., Roy, C., and Sow, B., Modelling the structure and variability of the southern Benguela upwelling using QuikSCAT wind forcing, J. Geophys. Res., 2005, vol. 110, C07018. https://doi.org/10.1029/2004JC002529

    Article  Google Scholar 

  3. Chaigneau, A., Eldin, G., and Dewitte, B., Eddy activity in the four major upwelling systems from satellite altimetry (1992–2007), Prog. Oceanogr., 2009, vol. 83, pp. 117–123. https://doi.org/10.1016/j.pocean.2009.07.012

    Article  Google Scholar 

  4. Chen, Z., Yan, X.-H., Jo, Y.-H., Jiang, L., and Jiang, Y., A study of Benguela upwelling system using different upwelling indices derived from remotely sensed data, Cont. Shelf Res., 2012, vol. 45, pp. 27–33. https://doi.org/10.1016/j.csr.2012.05.013

    Article  Google Scholar 

  5. Chernyshkov, P.P., Oceanological conditions in the Canary and Benguela upwelling regions and forecast of the state of pelagic fish populations, Dr. Sci. (Geogr.) Dissertation, Moscow, 2006.

  6. Cropper, T.E., Hanna, E., and Bigg, G.R., Spatial and temporal seasonal trends in coastal upwelling off Northwest Africa, 1981–2012, J. Deep-Sea Res., 2014, vol. 86, pp. 94–111.

    Article  Google Scholar 

  7. Croquette, M., Eldin, G., and Echevin, V., On the contributions of Ekman transport and pumping to the dynamics of coastal upwelling in the South-East Pacific, Gayana, 2004, vol. 68, no. 2, pp. 136–141.

    Google Scholar 

  8. Gill, A., Atmosphere–Ocean Dynamics, New York: Academic, 1982; Moscow: Mir, 1986, vol. 2.

  9. Gordon, S.L., Weiss, R.F., Smethie, W.M., Jr., and Warner, M.J., Thermocline and intermediate water communication between the South Atlantic and Indian Ocean, J. Geophys. Res., 1992, vol. 97, no. C5, pp. 7223–7240. https://doi.org/10.1029/92JC00485

    Article  Google Scholar 

  10. Goubanova, K., Illig, S., Machu, E., Garcon, V., and Dewitte, B., SST subseasonal variability in the central Benguela upwelling system as inferred from satellite observations (1999–2009), J. Geophys. Res.: Oceans, 2013, vol. 118, pp. 4092–4110. https://doi.org/10.1002/jgrc.20287

    Article  Google Scholar 

  11. Hutchings, L., van der Lingen, C.D., Shannon, L.J., Crawford, R.J.M., Verheye, H.M.S., Bartholomae, C.H., van der Plas, A.K., Louw, D., Kreiner, A., Ostrowski, M., Fidel, Q., Barlow, R.G., Lamont, T., Coetzee, J., Shillington, F., Veitch, J., Currie, J.C., and Monteiro, P.M.S., The Benguela current: An ecosystem of four components, Prog. Oceanogr., 2009, vol. 83, pp. 15–32. https://doi.org/10.1016/j.pocean.2009.07.046

    Article  Google Scholar 

  12. Lass, H.U., Schmidt, M., Mohrholz, V., and Nausch, G., Hydrographic and current measurements in the area of the Angola–Benguela front, J. Phys. Oceanogr., 2000, vol. 30, pp. 2589–2609.

    Article  Google Scholar 

  13. Malinin, V.N., Chernyshkov, P.P., and Gordeeva, S.M., Kanarskii apvelling: krupnomasshtabnaya izmenchivost' i prognoz temperatury vody (The Canary Upwelling: Large-Scale Variability and Water Temperature Forecast), St. Petersburg: Gidrometeoizdat, 2002.

  14. Meeuwis, J.M. and Lutjeharms, J.R.E., Surface thermal characteristics of the Angola–Benguela front, South Afr. J. Mar. Sci., 1990, vol. 9, pp. 261–279.

    Article  Google Scholar 

  15. Polonsky, A.B. and Serebrennikov, A.N., Interannual and intra-monthly fluctuations of the wind field and sea surface temperature in the West African upwelling region based on satellite data, Izv., Atmos. Ocean. Phys., 2018a, vol. 54, no. 9, pp. 1057–1061.

    Article  Google Scholar 

  16. Polonsky, A.B. and Serebrennikov, A.N., Long-term sea surface temperature trends in the Canary upwelling zone and their causes, Izv., Atmos. Ocean. Phys., 2018b, vol. 54, no. 9, pp. 1062–1067.

    Article  Google Scholar 

  17. Polonsky, A.B. and Sukhonos, P.A., Interannual variations in the components of heat budget in the upper layer of the North Atlantic in different seasons, Izv., Atmos. Ocean. Phys., 2017, vol. 54, no. 4, pp. 459–466.

    Article  Google Scholar 

  18. Renault, L., Hall, H., and McWilliams, J.C., Orographic shaping of US West Coast wind profiles during the upwelling season, Clim. Dyn., 2015, vol. 46, pp. 273–289. https://doi.org/10.1007/s00382-015-2583-4

    Article  Google Scholar 

  19. Santos, A.M.R., Kazmin, A.S., and Peliz, A., Decadal changes in the Canary upwelling system as revealed by satellite observations: Their impact on productivity, J. Mar. Res., 2005, vol. 63, pp. 359–379.

    Article  Google Scholar 

  20. Serebrennikov, A.N., An improved technique for the retrieval of coastal upwelling indices from satellite data, Sovrem. Probl. Distantsionnogo Zondirovaniya Zemli Kosmosa, 2018, vol. 15, no. 5, pp. 44–51.

    Article  Google Scholar 

  21. Shannon, L.V. and Nelson, G., The Benguela: Large-scale features and processes and system variability, The South Atlantic: Present and Past Circulation, Springer, 1996, pp. 163–210.

    Google Scholar 

  22. Stommel, H.M., The Gulf Stream. A Physical and Dynamical Description, Berkeley: University of California, 1958.

    Book  Google Scholar 

  23. Taufikurahman, Q. and Hidayat, R., Coastal upwelling in southern coast of Sumbawa Island, Indonesia, IOP Conf. Series: Earth and Environmental Science, 2017, vol. 54, p. 012075.

    Article  Google Scholar 

  24. Tim, N., Zorita, E., and Hunicke, B., Decadal variability and trends of the Benguela upwelling system as simulated in a high ocean-only simulation, Ocean Sci., 2015, vol. 11, pp. 483–502.

    Article  Google Scholar 

  25. Upwelling: Mechanisms, Ecological Effects and Threats to Biodiversity, Fischer, W.E. and Green, A.B., Eds., New York: Nova Sci., 2013.

    Google Scholar 

  26. Veitch, J., Penven, P., and Shillington, F., Modeling equilibrium dynamics of Benguela current system, J. Phys. Oceanogr., 2010, vol. 40, pp. 1942–1964. https://doi.org/10.1175/2010JPO4382.1

    Article  Google Scholar 

  27. WOCE Atlas, vol. 3: Atlantic Ocean (Digital Atlas), 2011. https://doi.org/10.21976/C6RP4Z

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ACKNOWLEDGMENTS

We are grateful to an anonymous reviewer for helpful comments and suggestions for revising the first variant of the manuscript.

Funding

This work was carried out as part of a state task (subject no. 0012-2019-0002: “Fundamental Studies of the Processes in the Climate System that Determine the Spacetime Variability of the Natural Environment on Global and Regional Scales”).

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Authors and Affiliations

  1. Institute of Natural and Technical Systems, Sevastopol, Russia

    A. B. Polonsky & A. N. Serebrennikov

  2. Branch of Moscow State University, Sevastopol, Russia

    A. B. Polonsky

  3. Sevastopol State University, Sevastopol, Russia

    A. B. Polonsky

Authors
  1. A. B. Polonsky
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  2. A. N. Serebrennikov
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Correspondence to A. B. Polonsky.

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Translated by L. Mukhortova

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Polonsky, A.B., Serebrennikov, A.N. On the Change in the Ocean Surface Temperature in the Benguela Upwelling Region. Part I: Season Cycle. Izv. Atmos. Ocean. Phys. 55, 1150–1159 (2019). https://doi.org/10.1134/S0001433819090391

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