Proof of Concept: Coupling Between Skin Temperature and Evapotranspiration

概念验证：皮肤温度和蒸发蒸腾之间的耦合加州大学圣迭戈分校机械和航空航天工程系Jan Kleisslg研究生研究助理：Yoichi Shiga项目总结同时测量辐射表面皮肤温度和大气表层湍流将使我们对土壤和大气之间的热量交换物理有新的基本见解。来自树冠水平阵列湍流研究(C-HATS)的一个独特的高质量数据集包含高频和空间分布的速度，以及核桃园上空和内部的空气和皮肤温度测量。这一数据集将允许探索热通量和近地表温度梯度之间的二维空间相关性，以及在数值模式中测试热通量公式作为表面温度的函数。新的小波分析将被用来量化地表温度、气温和风速之间的多尺度相互作用。更广泛的影响是，拟议的工作将改善对遥感观测潜热和感热通量的物理理解和建模。该成果将在能量平衡和蒸散的遥感、地雷探测和沙尘暴形成等领域具有强大的应用价值。安装和数据分析将由加州大学圣迭戈分校机械工程专业三年级本科生Yoichi Shiga进行。这笔资金将使他能够在一年内专注于一个研究课题，并通过在2008年春季AGU会议上展示他的成果来获得宝贵的经验。这将支持国家科学基金会S促进本科生研究经验的使命，从而增加攻读STEM博士学位的美国学生。

Proof of Concept: Coupling Between Skin Temperature and EvapotranspirationJan KleisslDept of Mechanical and Aerospace Engineering, University of California, San DiegoUndergraduate Research Assistant: Yoichi ShigaProject SummaryIntellectual MeritSimultaneous measurements of radiometric surface skin temperatures and atmospheric surface layer turbulence will give us new fundamental insights into the physics of exchange of heat between soil and atmosphere. A unique high-quality dataset from the Canopy Horizontal Array Turbulence Study(C-HATS) contains high frequency and spatially distributed velocity, and air and skin temperature measurements over and in a walnut orchard. This dataset will allow exploring 2d spatial correlations between heat flux and near surface temperature gradients as well as testing of heat flux formulations as a function of surface temperatures in numerical models. Novel wavelet analysis will be used to quantify the multiscale interactions between surface temperature, air temperature, and wind speed.Broader Impact The proposed work will improve both physical understanding and modeling of latent and sensible heat fluxes from remotely sensed observations. The results will have strong applications in fields as diverse as remote sensing of the energy balance and evapotranspiration, landmine detection, and dust devil formation.Installation and data analysis will be conducted by 3rd year UCSD Mechanical Engineering undergraduate student Yoichi Shiga. The funding will allow him to focus on a research topic for a year and gain valuable experiences by presenting his results at the Spring AGU meeting 2008. This will support NSF?s mission to promote undergraduate research experiences leading to an increase of US students who pursue Ph.D.s in STEM.