DOI: 10.1175/JCLI-D-11-00321.1
Scopus记录号: 2-s2.0-84867686888
论文题名: The influence of boundary layer processes on the diurnal variation of the climatological near-surface wind speed probability distribution over land
作者: He Y. ; McFarlane N.A. ; Monahan A.H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 18 起始页码: 6441
结束页码: 6458
语种: 英语
Scopus关键词: Atmospheric general circulation models
; Boundary layer process
; Canadian centre for climate modelling and analysis
; Diurnal variation
; Flux Richardson number
; Global observation
; High vertical resolution
; Intermittent mixing
; Land surface
; Layer-inversion
; Near-surface winds
; Netherlands
; Nocturnal boundary layers
; Power managements
; Probability density function (pdf)
; Realistic simulation
; Semi-empirical
; Simple stochastic
; Stable flows
; Standard deviation
; Subgrid scale
; Surface flux
; Surface wind speed
; Turbulent kinetic energy
; Turbulent transfer
; Vertical structures
; Wind power density
; Wind speed
; Wind speed distribution
; Atmospheric thermodynamics
; Boundary layers
; Energy management
; Higher order statistics
; Parameterization
; Probability density function
; Probability distributions
; Statistics
; Stochastic models
; Surface measurement
; Wind power
; Wind effects
; boundary layer
; climate modeling
; diurnal variation
; general circulation model
; land surface
; parameterization
; probability density function
; wind velocity
; Cabauw
; Netherlands
; Utrecht [Netherlands]
英文摘要: Knowledge of the diurnally varying land surface wind speed probability distribution is essential for surface flux estimation and wind power management. Global observations indicate that the surface wind speed probability density function (PDF) is characterized by a Weibull-like PDF during the day and a nighttime PDF with considerably greater skewness. Consideration of long-term tower observations at Cabauw, the Netherlands, indicates that this nighttime skewness is a shallow feature connected to the formation of a stably stratified nocturnal boundary layer. The observed diurnally varying vertical structure of the leading three climatological moments of near-surface wind speed (mean, standard deviation, and skewness) and the wind power density at the Cabauw site can be successfully simulated using the single-column version of the Canadian Centre for Climate Modelling and Analysis (CCCma) fourth-generation atmospheric general circulation model (CanAM4) with a new semiempirical diagnostic turbulent kinetic energy (TKE) scheme representing downgradient turbulent transfer processes for cloud-free conditions. This model also includes a simple stochastic representation of intermittent turbulence at the boundary layer inversion. It is found that the mean and the standard deviation of wind speed are most influenced by large-scale "weather"variability, while the shape of the PDF is influenced by the intermittent mixing process. This effect is quantitatively dependent on the asymptotic flux Richardson number, which determines the Prandtl number in stable flows. High vertical resolution near the land surface is also necessary for realistic simulation of the observed fine vertical structure of wind speed distribution. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52269
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada; Canadian Centre for Climate Modelling and Analysis, University of Victoria, Victoria, BC, Canada
Recommended Citation:
He Y.,McFarlane N.A.,Monahan A.H.. The influence of boundary layer processes on the diurnal variation of the climatological near-surface wind speed probability distribution over land[J]. Journal of Climate,2012-01-01,25(18)