Numerical modeling and validating waves generated by typhoons in the East Vietnam Sea using satellite data

Authors

  • Pham Tien Dat Faculty of Meteorology, Hydrology and Oceanography, VNU University of Science, Hanoi, Vietnam
  • Nguyen Minh Huan Faculty of Meteorology, Hydrology and Oceanography, VNU University of Science, Hanoi, Vietnam
  • Nguyen Phuong Anh National Centre for Hydro-Meteorological Forecasting, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/16408

Keywords:

East Vietnam Sea, typhoon, waves.

Abstract

Calculating waves generated by typhoons is one of the most important tasks for wave forecasting at a stormy region like the East Vietnam Sea. It is, however, difficult to access the accuracy of calculated wave heights due to the lack of observed data. An approach of combining numerical models and satellite data has been widely used. In this study, we used the WAVEWATCH III model to stimulate wave fields caused by three strong typhoons: Damrey (2005), Ketsana (2009) and Haiyan (2013), then compared significant wave heights with the merged satellite observations. The results show that the BIAS values are small and negative, indicating that the wave heights from the model are lower than those from satellites in all cases. In contrast, the RMSE values of the three cases are considerably different but are still below 1 m. Finally, the average correlation coefficient is highest in typhoon Damrey (r = 0.94) whereas in typhoon Ketsana and Haiyan, r = 0.84 and r = 0.87, respectively. In conclusion, the study suggests that the WAVEWATCH III model has good performance for typhoon wave calculations and can be useful for wave forecasting in the East Vietnam Sea.

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Published

2021-06-30

How to Cite

Pham Tien, D., Nguyen Minh , H., & Nguyen Phuong, A. (2021). Numerical modeling and validating waves generated by typhoons in the East Vietnam Sea using satellite data. Vietnam Journal of Marine Science and Technology, 21(2). https://doi.org/10.15625/1859-3097/16408

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Articles