Drag coefficient and aerodynamic roughness at high wind

ZHANG Rongzhi; GAO Zhiqiu; SHEN Xinyong

doi:10.3969/j.issn.0253-4193.2013.01.009

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ZHANG Rongzhi, GAO Zhiqiu, SHEN Xinyong. Drag coefficient and aerodynamic roughness at high wind[J]. Haiyang Xuebao, 2013, 35(1): 76-84. doi: 10.3969/j.issn.0253-4193.2013.01.009

Citation:

ZHANG Rongzhi, GAO Zhiqiu, SHEN Xinyong. Drag coefficient and aerodynamic roughness at high wind[J]. Haiyang Xuebao, 2013, 35(1): 76-84. doi: 10.3969/j.issn.0253-4193.2013.01.009

ZHANG Rongzhi, GAO Zhiqiu, SHEN Xinyong. Drag coefficient and aerodynamic roughness at high wind[J]. Haiyang Xuebao, 2013, 35(1): 76-84. doi: 10.3969/j.issn.0253-4193.2013.01.009

Citation:

ZHANG Rongzhi, GAO Zhiqiu, SHEN Xinyong. Drag coefficient and aerodynamic roughness at high wind[J]. Haiyang Xuebao, 2013, 35(1): 76-84. doi: 10.3969/j.issn.0253-4193.2013.01.009

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Drag coefficient and aerodynamic roughness at high wind

doi: 10.3969/j.issn.0253-4193.2013.01.009

1.
Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, CAS, Beijing 100029, China;East China Regional Air Traffic Management Bureau of Civil Aviation of China, Meteorological Center, Shanghai 201105, China
2.
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, CAS, Beijing 100029, China
3.
Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China

Received Date: 2010-04-25
Rev Recd Date: 2012-08-15

Abstract

Abstract

Study of air-sea momentum exchange and wave character is becoming even more important for an accurate forecasting of cyclone evolution and atrocious ocean. Followed previous method, typhoon was divided into three sectors: (1) swell along wind, (2) swell against wind and (3) swell cross wind. Combining buoy data and hurricane paths data, the azimuth and distance of buoys relative to hurricane were obtained. By analyses theses data, the laws of wave height and phase velocity with wind speed increase were derived. And then, friction velocity(u_*), the drag coefficient(C_DN) and aerodynamic roughness length(z₀)was calculated by using the GWW parameterization scheme. Compared with anterior representative studies, we found the estimated results were consistent well with their observation and conclusions. This study proves the GWW parameterization scheme is applicable well under high wind speed regime.
- typhoon,
- GWW scheme,
- wave height,
- phase velocity,
- drag coefficient,
- aerodynamic roughness

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References(29)

References

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