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

水循环研究(WCR)项目将根据涉及实地观察和实地活动数值模拟的协调一致战略，确定流域尺度的蒸发--水文循环的一个关键组成部分。由于湍流输送的间歇性，区域尺度蒸发量的确定，特别是在非均匀地表上的蒸发量的确定仍然具有挑战性。Parlange博士及其同事Meneveau博士和Thomas博士(均在约翰·霍普金斯大学)将使用被动遥感工具获取附近几个地点边界层温度和湿度的详细轮廓。现场观测将使用最先进的大涡模拟模型进行模拟，以努力提取表面非均质性与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量的建模和预测，对表征区域水文的可变性和变化产生有益的影响。该项目由大型动力气象学项目管理。

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.