Wind Gust and Turbulence Statistics of Typhoons in South China

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  • Funds:

    Supported by the National Natural Science Foundation of China under Grant Nos. 90715031, 40775018, and 40875008, and the National Science & Technology Pillar Program under Grant No. 2008BAC37B00.

  • doi: 10.1007/s13351-011-0009-8

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  • The wind data of four typhoons were obtained and analyzed. The wind speeds were measured by sonic anemometers at four observation sites in Guangdong and Hainan provinces. Detailed analysis of the wind data was conducted to investigate the turbulence characteristics of the typhoons. Characteristics of the gust factor and the turbulence integral scale of the typhoons were concluded with high confidence. The relationships among the gust factor, gust duration time, mean wind speed, roughness length, and turbulence intensity were described. The turbulence integral scale was found to be closely related to the segment length and turbulence intensity.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Wind Gust and Turbulence Statistics of Typhoons in South China

  • 1. LAPC,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029 Graduate University of Chinese Academy of Sciences,Beijing 100049;
    LAPC,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029;
    LAPC,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029
Funds: Supported by the National Natural Science Foundation of China under Grant Nos. 90715031, 40775018, and 40875008, and the National Science & Technology Pillar Program under Grant No. 2008BAC37B00.

Abstract: The wind data of four typhoons were obtained and analyzed. The wind speeds were measured by sonic anemometers at four observation sites in Guangdong and Hainan provinces. Detailed analysis of the wind data was conducted to investigate the turbulence characteristics of the typhoons. Characteristics of the gust factor and the turbulence integral scale of the typhoons were concluded with high confidence. The relationships among the gust factor, gust duration time, mean wind speed, roughness length, and turbulence intensity were described. The turbulence integral scale was found to be closely related to the segment length and turbulence intensity.

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