WCR: Evaporation and the Atmospheric Boundary Layer Over Hilly Terrain: Instrumentation, Experimentation and Simulation

水循环研究（WCR）项目将确定流域规模的蒸发-水文循环的一个关键组成部分-从一个协调一致的战略，涉及实地观测和实地活动的数值模拟。区域尺度蒸发的确定，特别是在非均匀的陆地表面仍然具有挑战性，由于湍流传输的不稳定性。Parlange博士及其同事Meneveau博士和托马斯博士（均来自约翰霍普金斯大学）将使用被动遥感工具在附近几个地点获得边界层温度和湿度的详细分布。将使用最先进的大涡模拟模型模拟实地观测，以努力提取表面异质性和边界层区域混合之间的有意义的联系。该项目将改进流域尺度蒸发的建模和预测，对区域水文变异和变化的特征描述产生有益的影响。该项目由大规模动态气象学方案管理。

The Water Cycle Research (WCR) project will determine watershed scale evaporation - a key component of the hydrologic cycle - from a concerted strategy involving field observations and numerical simulations of the field campaigns. Determination of regional-scale evaporation, particularly, over heterogeneous land surfaces remains challenging due to intermittency of the turbulent transport. Dr. Parlange, and colleagues, Drs. Meneveau and Thomas (all at Johns Hopkins University) will use passive remote sensing tools to obtain detailed profiles of temperature and humidity in the boundary layer at several nearby locations. The field observations will be simulated using state-of-the-art large eddy simulation models, in an effort to extract meaningful linkages between surface heterogeneity and mixing in the boundary layer region. The project will lead to improved modeling and prediction of watershed scale evaporation, with beneficial consequences for characterization of regional hydrological variability and change. The project is administered by the Large-scale Dynamic Meteorology program.