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Oceanology

, Volume 56, Issue 4, pp 509–514 | Cite as

Impact on oceanic dynamics from assimilation of satellite surface height anomaly data into the Hybrid Coordinate Ocean Model Ocean Model (HYCOM) over the Atlantic Ocean

  • C. A. S. Tanajura
  • L. N. Lima
  • K. Belyaev
Marine Physics

Abstract

Observed along-track data of sea surface height anomalies (SSHAs) over the Atlantic Ocean from the Jason-1 and Jason-2 satellites were assimilated into the Hybrid-Coordinate Ocean Model (HYCOM) with the Ensemble Optimal Interpolation scheme (EnOI). The impact of assimilation of SSHA with focus on oceanic dynamics was investigated. Time series of analyzed and forecasted values were compared with a model free run with the same forcing but without assimilation. In addition, the results were compared with an independent run, the so-called HYCOM + NCODA analysis from the US Navy. The study shows that the assimilation technique with some modifications allowed substantial improvement in the 24 h ocean prediction by reducing the forecast errors in comparison with the free run. It is also shown that the analyzed sea surface fields contain mesoscale and synoptic variability, which are poorly seen in the free run.

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References

  1. 1.
    N. A. Diansky, Modeling of Ocean Circulation and Its Reaction on Short-and Long-Term Atmospheric Influences (Fizmatlit, Moscow, 2013) [in Russian].Google Scholar
  2. 2.
    V. L. Dorofeev and G. K. Korotaev, “Assimilation of the data of satellite altimetry in an eddy-resolving model of circulation of the Black Sea,” Phys. Oceanogr. 14 (1), 42–56 (2004).CrossRefGoogle Scholar
  3. 3.
    V. V. Knysh, S. G. Demyshev, G. K. Korotaev, and A. S. Sarkisyan, “Method and results of assimilation of climatic data on temperature, salinity, and sea level into a numerical model of the Black Sea,” Izv. Atmos. Ocean. Phys. 43 (3), 363–377 (2007).CrossRefGoogle Scholar
  4. 4.
    C. A. S. Tanajura, L. N. Lima, and K. P. Belyaev, “Assimilation of satellite surface-height anomalies data into a Hybrid Coordinate Ocean Model (HYCOM) over the Atlantic Ocean,” Oceanology (Engl. Transl.) 55 (5), 667–678 (2015).Google Scholar
  5. 5.
    R. Bleck and D. R. Boudra, “Initial testing of a numerical ocean circulation model using a hybrid quasi isopycnal vertical coordinate,” J. Phys. Oceanogr. 11, 755–770 (1981).CrossRefGoogle Scholar
  6. 6.
    E. P. Chassignet, H. Hurlburt, E. J. Metzger, et al., “US GODAE: Global Ocean Prediction with the HYbrid Coordinate Ocean Model (HYCOM),” Oceanography 22, 64–75 (2009).CrossRefGoogle Scholar
  7. 7.
    C. A. S. Tanajura and K. Belyaev, “On oceanic impact of data assimilation method in a coupled ocean-landatmosphere model over Atlantic,” Ocean Dyn. 52 (3), 23–32 (2002).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Inc. 2016

Authors and Affiliations

  • C. A. S. Tanajura
    • 1
    • 2
    • 3
  • L. N. Lima
    • 2
  • K. Belyaev
    • 1
    • 4
    • 5
  1. 1.Instituto de FisicaUniversidade Federal da BahiaSalvadorBrazil
  2. 2.Centro de Pesquisa de Geologia e GeofísicaUniversidade Federal da BahiaSalvadorBrazil
  3. 3.Department of Ocean SciencesUniversity of CaliforniaSanta CruzUSA
  4. 4.Shirshov Institute of OceanologyRussian Academy of SciencesMoscowRussia
  5. 5.Keldysh Federal Research Centre for Applied Mathematics RASMoscowRussia

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