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Neural Computing and Applications

, Volume 28, Supplement 1, pp 611–620 | Cite as

Predicting ocean surface currents using numerical weather prediction model and Kohonen neural network: a northern Adriatic study

  • Hrvoje KalinićEmail author
  • Hrvoje Mihanović
  • Simone Cosoli
  • Martina Tudor
  • Ivica Vilibić
Original Article

Abstract

The paper documents a concept of ocean forecasting system for ocean surface currents based on self-organizing map (SOM) trained by high-resolution numerical weather prediction (NWP) model and high-frequency (HF) radar data. Wind and surface currents data from the northern Adriatic coastal area were used in a 6-month long training phase to obtain SOM patterns. Very high correlation between current and joined current and wind SOM patterns indicated the strong relationship between winds and currents and allowed for creation of a prediction system. Increasing SOM dimensions did not increase reliability of the forecasting system, being limited by the amount of the data used for training and achieving the lowest errors for 4 × 4 SOM matrix. As the HF radars and high-resolution NWP models are strongly expanding in coastal oceans, providing reliable and long-term datasets, the applicability of the proposed SOM-based forecasting system is expected to be high.

Keywords

Self-organizing map Neural network Hybrid model Sea surface currents prediction 

Notes

Acknowledgments

The work on this paper was supported by the UKF project NEURAL (www.izor.hr/neural) and the IPA CBC project HAZADR (www.hazadr.eu). The SOM Toolbox version 2.0 for MATLAB was developed by E. Alhoniemi, J. Himberg, J. Parhankangas, and J. Vesanto at the Helsinki University of Technology, Finland, and is available at http://www.cis.hut.fi/projects/somtoolbox. Comments raised by anonymous reviewers are appreciated as greatly improving quality of the manuscript.

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Copyright information

© The Natural Computing Applications Forum 2016

Authors and Affiliations

  • Hrvoje Kalinić
    • 1
    • 2
    Email author
  • Hrvoje Mihanović
    • 1
  • Simone Cosoli
    • 3
    • 4
  • Martina Tudor
    • 5
  • Ivica Vilibić
    • 1
  1. 1.Institute of Oceanography and FisheriesSplitCroatia
  2. 2.Faculty of ScienceUniversity of SplitSplitCroatia
  3. 3.Istituto Nazionale di Oceanografia e di Geofisica SperimentaleSgonicoItaly
  4. 4.School of Civil, Environmental and Mining EngineeringThe University of Western AustraliaCrawleyAustralia
  5. 5.Meteorological and Hydrological Service of CroatiaZagrebCroatia

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