| 项目编号: | 1614345
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| 项目名称: | Frequent Weak-wind Boundary Layers Using New Analysis Techniques in the Space-time Domain |
| 作者: | Larry Mahrt
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| 承担单位: | NorthWest Research Associates, Incorporated
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| 批准年: | 2016
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| 开始日期: | 2016-10-01
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| 结束日期: | 2019-09-30
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| 资助金额: | 603142
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | weak-wind
; weak-wind boundary layer
; weak wind flow
; such boundary layer
; study
; boundary layer
; boundary layer structure
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| 英文摘要: | This study seeks to improve our understanding of the interaction of weak wind flow in the lowest layer of the atmosphere and generation of turbulence in gently sloping terrain. An improved understanding of weak-wind boundary layers could potentially lead to more accurate modeling of the formation of cold pools, damaging frost (including impact to local vineyards), fog formation, and dispersion of contaminants.
This study seeks to investigate weak-wind boundary layers using detailed spatial-temporal measurements. These boundary layers demonstrate non-stationarity and the turbulence in them is generally in a non-equilibrium state with the mean flow. Previous studies of such boundary layers were mostly limited to temporal data at fixed locations, and therefore could not take into account hysteresis when investigating scaling properties. This study analyzes detailed spatial-temporal data to form a more complete picture of boundary layer structures. The evolution of the structures and the impact of the sub-mesoscale motions will be investigated. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90899
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Larry Mahrt. Frequent Weak-wind Boundary Layers Using New Analysis Techniques in the Space-time Domain. 2016-01-01.
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