Understanding and Modeling the Role of Horizontal Heterogeneity on the Dynamics of the Nocturnal Boundary Layer Across Scales

理解和模拟水平异质性对跨尺度夜间边界层动力学的作用

• 批准号: 1660367
• 负责人: Rob Stoll
• 金额: $ 72.42万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-15 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1660367&HistoricalAwards=false
• 关键词: Understanding; Modeling; Role; Horizontal; Heterogeneity

This study seeks to understand the role of surface differences in determining average surface fluxes in the nocturnal boundary layer (NBL). Insights will be used to develop new physically-based models and parameterizations that can properly account for the interaction between natural land surface differences and turbulence in the lowest layer of the atmosphere near the surface. This study will incorporate a numerical weather prediction (NWP) module as part of a summer camp called Hi-GEAR (Girls Engineering Abilities Realized) and an outreach program called Discover Engineering. The key hypothesis of this study is that under the stratified conditions characteristic of the NBL, surface heterogeneity will localize turbulent fluxes horizontally and vertically, and will enhance the flux contrast between regions with different surface states, such as temperature. The uniqueness of the proposed research rests with the fact that current surface flux parameterizations in models do not account for these interactions.

本研究试图了解地表差异在决定夜间边界层(NBL)平均地表通量中的作用。洞察力将被用来开发新的基于物理的模型和参数，这些模型和参数可以适当地解释自然陆地表面差异和地表附近大气最低层的湍流之间的相互作用。这项研究将包括一个数值天气预报(NWP)模块，作为名为Hi-Gear(实现女孩工程能力)夏令营的一部分，以及一个名为发现工程的推广计划。这项研究的关键假设是，在NBL特有的层化条件下，地表非均质性将使湍流通量在水平和垂直方向上局部化，并将增强具有不同表面状态的区域之间的通量对比，例如温度。这项研究的独特性在于，模式中的当前表面通量参数没有考虑到这些相互作用。

项目成果

Large-Eddy Simulation of the Atmospheric Boundary Layer

• DOI: 10.1007/s10546-020-00556-3
• 发表时间: 2020-08
• 期刊: Boundary-Layer Meteorology
• 影响因子: 4.3
• 作者: R. Stoll;Jeremy A. Gibbs;S. Salesky;W. Anderson;M. Calaf

Momentum and Turbulent Transport in Sparse, Organized Vegetative Canopies

稀疏、有组织的植物冠层中的动量和湍流传输

• DOI: 10.1007/s10546-022-00698-6
• 发表时间: 2022
• 期刊: Boundary-Layer Meteorology
• 影响因子: 4.3
• 作者: Torkelson, Gregory;Price, Timothy A.;Stoll, Rob
• 通讯作者: Stoll, Rob

Inclination Angles of Turbulent Structures in Stably Stratified Boundary Layers

• DOI: 10.1007/s10546-022-00740-7
• 发表时间: 2022-10
• 期刊: Boundary-Layer Meteorology
• 影响因子: 4.3
• 作者: Jeremy A. Gibbs;R. Stoll;S. Salesky