气候变化领域集成服务门户(CCPortal): A comparative study of the wind characteristics of three typhoons based on stationary and nonstationary models

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DOI	10.1007/s11069-020-03894-0
	A comparative study of the wind characteristics of three typhoons based on stationary and nonstationary models
	Huang P.; Xie W.; Gu M.
发表日期	2020
ISSN	0921030X
起始页码	785
结束页码	815
卷号	101 期号:3
英文摘要	This study presents the results of a comparative study of the wind characteristics of three typhoons presenting similar characteristics, based on stationary and nonstationary models. The original data were collected at four different heights along the seaside of the Fujian Province (China), where the typhoons passed through. First, the run-test method and discrete wavelet transform were employed to evaluate the stationarity and extract the time-varying mean wind speed after data filtering. Then, the gust factor, turbulence intensity and turbulence integral scale were compared. The results demonstrated that the wind characteristics described by the nonstationary model were more centralized and stable than those obtained by the stationary model. Lastly, the power spectral density and evolutionary power spectral density (EPSD) were compared, revealing that the von Karman spectra fitted well the measured spectra. In addition, two methods for the analysis of nonstationary wind spectra were compared. The direct extension from stationary model to nonstationary model was found not to be reasonable from the results of this comparison. Considering the instantaneous energy concentration shown in the EPSD, a nonstationary approach is recommended when analyzing near surface typhoon wind data. © 2020, Springer Nature B.V.
关键词	Boundary layer EPSD Hurricane Nonstationary model Turbulence characteristics Typhoon
英文关键词	atmospheric modeling; comparative study; gust; numerical model; transform; turbulence; typhoon; wind velocity; China; Fujian
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205731
作者单位	State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
推荐引用方式 GB/T 7714	Huang P.,Xie W.,Gu M.. A comparative study of the wind characteristics of three typhoons based on stationary and nonstationary models[J],2020,101(3).
APA	Huang P.,Xie W.,&Gu M..(2020).A comparative study of the wind characteristics of three typhoons based on stationary and nonstationary models.Natural Hazards,101(3).
MLA	Huang P.,et al."A comparative study of the wind characteristics of three typhoons based on stationary and nonstationary models".Natural Hazards 101.3(2020).