DOI: 10.1175/JCLI-D-13-00286.1
Scopus记录号: 2-s2.0-84901827510
论文题名: At what time of day do daily extreme near-surface wind speeds occur?
作者: Fajber R. ; Monahan A.H. ; Merryfield W.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 11 起始页码: 4226
结束页码: 4244
语种: 英语
Scopus关键词: Budget control
; Autocorrelated time series
; Boundary layer process
; Diurnal variation
; Extreme wind speed
; Joint distributions
; Mechanistic modeling
; Near-surface winds
; Non-stationarities
; Time series analysis
; autocorrelation
; boundary layer
; extreme event
; time series analysis
; wind velocity
; Cabauw
; Netherlands
; Utrecht [Netherlands]
英文摘要: The timing of daily extreme wind speeds from 10 to 200mis considered using 11 yr of 10-min averaged data from the 213-m tower at Cabauw, the Netherlands. This analysis is complicated by the tendency of autocorrelated time series to take their extreme values near the beginning or end of a fixed window in time, even when the series is stationary. It is demonstrated that a simple averaging procedure using different base times to define the day effectively suppresses this "edge effect" and enhances the intrinsic nonstationarity associated with diurnal variations in boundary layer processes. It is found that daily extreme wind speeds at 10m are most likely in the early afternoon, whereas those at 200mare most likely in between midnight and sunrise. An analysis of the joint distribution of the timing of extremes at these two altitudes indicates the presence of two regimes: one in which the timing is synchronized between these two layers, and the other in which the occurrence of extremes is asynchronous. These results are interpreted physically using an idealized mechanistic model of the surface layer momentum budget. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51137
Appears in Collections: 气候变化事实与影响
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作者单位: School of Earth and Ocean Sciences, University of Victoria, P.O. Box 3065 STN CSC, Victoria, BC V8W 3V6, Canada; Canadian Centre for Climate Modelling and Analysis, University of Victoria, Victoria, BC, Canada
Recommended Citation:
Fajber R.,Monahan A.H.,Merryfield W.J.. At what time of day do daily extreme near-surface wind speeds occur?[J]. Journal of Climate,2014-01-01,27(11)