Wind and Structures

Techno-Press (테크노프레스)
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The influence of sea surface temperature for vertical extreme wind shear change and its relation to the atmospheric stability at coastal area

  • Geonhwa Ryu (OWC) ;
  • Young-Gon Kim (Wind Energy Research Center, Energy Valley Industry-University Convergence Agency) ;
  • Dongjin Kim (Division of Earth Environmental System, Pusan National University) ;
  • Sang-Man Kim (Smart Grid Institute, Mokpo National University) ;
  • Min Je Kim (Department of Electrical and Control Engineering, Mokpo National University) ;
  • Wonbae Jeon (Department of Atmospheric Sciences, Pusan National University) ;
  • Chae-Joo Moon (Department of Electrical and Control Engineering, Mokpo National University)
  • Received : 2022.02.18
  • Accepted : 2023.03.23
  • Published : 2023.03.25
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Abstract

In this study, the effect of sea surface temperature (SST) on the distribution of vertical wind speed in the atmospheric boundary layer of coastal areas was analyzed. In general, coastal areas are known to be more susceptible to various meteorological factors than inland areas due to interannual changes in sea surface temperature. Therefore, the purpose of this study is to analyze the relationship between sea surface temperature (ERA5) and wind resource data based on the meteorological mast of Høvsøre, the test bed area of the onshore wind farm in the coastal area of Denmark. In addition, the possibility of coastal disasters caused by abnormal vertical wind shear due to changes in sea surface temperature was also analyzed. According to the analysis of the correlation between the wind resource data at met mast and the sea surface temperature by ERA5, the wind speed from the sea and the vertical wind shear are stronger than from the inland, and are vulnerable to seasonal sea surface temperature fluctuations. In particular, the abnormal vertical wind shear, in which only the lower wind speed was strengthened and appeared in the form of a nose, mainly appeared in winter when the atmosphere was near-neutral or stable, and all occurred when the wind blows from the sea. This phenomenon usually occurred when there was a sudden change in sea surface temperature within a short period of time.

Keywords

Acknowledgement

This research was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE)(2021RIS-002).

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