The probability distribution of sea surface wind speeds over the northern South China Sea

Liao Fei; Deng Hua; Zeng Lin; Chan Pak-wai

doi:10.3969/j.issn.0253-4193.2018.05.004

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Liao Fei, Deng Hua, Zeng Lin, Chan Pak-wai. The probability distribution of sea surface wind speeds over the northern South China Sea[J]. Haiyang Xuebao, 2018, 40(5): 37-47. doi: 10.3969/j.issn.0253-4193.2018.05.004

Citation:

Liao Fei, Deng Hua, Zeng Lin, Chan Pak-wai. The probability distribution of sea surface wind speeds over the northern South China Sea[J]. Haiyang Xuebao, 2018, 40(5): 37-47. doi: 10.3969/j.issn.0253-4193.2018.05.004

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The probability distribution of sea surface wind speeds over the northern South China Sea

doi: 10.3969/j.issn.0253-4193.2018.05.004

1.
Guangzhou Meteorological Observatory, Guangzhou 511430, China;Guangzhou Institute of Tropical and Marine Meteorology, CMA, Guangzhou 510080, China
2.
Guangdong Ecological Meteorology Center, Guangzhou 510080, China;Guangzhou Institute of Tropical and Marine Meteorology, CMA, Guangzhou 510080, China
3.
Guangzhou Meteorological Observatory, Guangzhou 511430, China
4.
Hong Kong Observatory, Hong Kong 999077, China

Received Date: 2017-06-07
Rev Recd Date: 2017-10-11

Abstract

Abstract

The probability distribution characteristics of wind speed in the northern part of the South China Sea are analyzed based on buoy and oil platform sites within 0-200 km different offshore distance. Observation results indicate that the maximum average wind speed is strongest in the winter season and weakest in the summer, and the average wind speed rise gradually with the increase of the offshore distance. A two parameters Weibull distribution structure is modeled well in the observed sea surface wind speed from stations within the offshore distance area (<100 km), but the feature of sea surface wind speed of the stations outside of 100 km can not account for the Weibull structure, and the average wind speed and wind speed standard deviation arise with the increase of distance from the shore. The skewness of the wind speed is a concave downward function of the ratio of the mean wind speed to its standard deviation, such that the skewness is positive where the ratio is relatively small. The observed skewness of offshore distance stations are obviously smaller than corresponding Weibull skewness, which indicate that non-Weibull structure behavior is evident in these stations.
- sea wind,
- probability distribution,
- offshore distance

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