Global S&T Development Trend Analysis Platform of Resources and Environment
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. | |
2020-03-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
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. Plain Language Summary Wind farms and single wind turbines change low-level atmospheric transport of momentum, heat, and water vapor, increase surface nighttime temperature, and decrease surface humidity. We infer that wind farms and single turbines also modify transitions in warming and cooling of the air during the daytime to nighttime hours. Measurements are used from a twin 120-m tall tower network in Iowa to detect differences in the evening transition between a location outside of a wind farm and near a single turbine or inside the wind farm. Behind a single turbine, the surface air cools 2 hr earlier while the air within the blade swept area cools 1 hr later when compared to outside the wind farm. Wind farm flow causes a small difference (30 min) to the transition. The results provide additional evidence that wind turbines may influence biological regulation of soil microorganisms, plants, or animals in the proximity of wind energy production facilities. |
英文关键词 | wind farm evening transition boundary layer stratification shear and buoyancy tall tower measurements |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529097700007 |
WOS关键词 | LOW-LEVEL JETS ; TURBINE WAKES ; SURFACE-LAYER ; TURBULENCE ; ENERGY ; AFTERNOON ; IMPACTS ; MODEL ; HEAT ; FLUX |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279823 |
专题 | 气候变化 |
作者单位 | Iowa State Univ, Dept Agron, Ames, IA 50011 USA |
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]. GEOPHYSICAL RESEARCH LETTERS,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). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论