气候变化领域集成服务门户(CCPortal): Observations Show That Wind Farms Substantially Modify the Atmospheric Boundary Layer Thermal Stratification Transition in the Early Evening

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DOI	10.1029/2019GL086010
	Observations Show That Wind Farms Substantially Modify the Atmospheric Boundary Layer Thermal Stratification Transition in the Early Evening
	Rajewski D.A.; Takle E.S.; VanLoocke A.; Purdy S.L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Single wind turbines and large wind farms modify local scales of atmospheric boundary layer (ABL) turbulence through different mechanisms dependent on location within the wind farm. These changes in turbulence scales would most likely have notable influence on surface fluxes and microclimate during the afternoon and early evening stability transition. Profiles of Richardson number and shear and buoyancy from 1-Hz tall tower measurements in and near a wind farm in an agricultural landscape were used to quantify departures in stability characteristics during the fallow seasons. A single turbine wake decoupled turbulent connection between the surface and above the wind turbine, changed the onset of near-surface stabilization (earlier by a few hours), and lengthened the transition period (by up to an hour) within the rotor wake. Deep within a large wind farm, turbulence recovered to near-ambient conditions and departures of the transition onset and duration were within 30 min of the natural ABL. © 2020. The Authors.
英文关键词	Agricultural robots; Atmospheric boundary layer; Boundary layers; Buoyancy; Electric utilities; Thermal stratification; Turbulence; Wakes; Wind power; Wind turbines; Agricultural landscapes; Ambient conditions; Different mechanisms; evening transition; Stability transition; Tall towers; Transition period; Wind farm; Atmospheric thermodynamics; boundary layer; buoyancy; observational method; shear; stratification; surface flux; wind farm; wind turbine
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170565
作者单位	Department of Agronomy, Iowa State University, Ames, IA, United States
推荐引用方式 GB/T 7714	Rajewski D.A.,Takle E.S.,VanLoocke A.,et al. Observations Show That Wind Farms Substantially Modify the Atmospheric Boundary Layer Thermal Stratification Transition in the Early Evening[J],2020,47(6).
APA	Rajewski D.A.,Takle E.S.,VanLoocke A.,&Purdy S.L..(2020).Observations Show That Wind Farms Substantially Modify the Atmospheric Boundary Layer Thermal Stratification Transition in the Early Evening.Geophysical Research Letters,47(6).
MLA	Rajewski D.A.,et al."Observations Show That Wind Farms Substantially Modify the Atmospheric Boundary Layer Thermal Stratification Transition in the Early Evening".Geophysical Research Letters 47.6(2020).