Collaborative Research: Refinement of Techniques for Estimating Evapotranspiration from Narrow Riparian Zones--Water Balance and Atmosphere Measurements

项目摘要该项目是更大的水电-堪萨斯(香港)项目的一个组成部分。它的共同目标是发展一种稳健的、可测试的有序网络耦合过程理论(COPON)，以便在多个空间和时间尺度上预测大气、水文、景观和生态响应。该项目涉及河岸地带的蒸散(ET)；河岸带只占整个景观的一小部分，但对整个流域的蒸散(ET)的贡献不成比例。河岸区通常是狭小的区域，不相交？要求等不符合传统的流量测量方法。该项目将应用现有的最先进的技术，从扫描水蒸气拉曼激光雷达到地下水预算方法，该方法可用于测量不同阶数的河流的ET。提出的激光雷达方法涉及一种新的二维反演方法，该方法估计ET必须是什么才能产生由激光雷达测量的河岸地区顺风向二维水汽浓度。关于河岸ET的信息将为检验COPON理论提供理论依据。

Project AbstractThis project is one component of the larger Hydro-Kansas (HK) Project. It has the common goal to develop a robust, testable theory of coupled processes on ordered networks (COPON) in order to predict atmospheric, hydrologic, landscape and ecological responses at multiple space and time scales. This project addresses evapotranspiration (ET) in riparian zones; which make up only a small percentage of the total landscape, but contribute disproportionately to basin-wide ET. Riparian areas are generally narrow areas that do not meet ?fetch? requirements and so are not amenable to traditional methods of flux measurement. This project will apply the most modern technology available, from a scanning water vapor Raman lidar to a subsurface water budget approach that can be implemented for measurement of ET on streams of different orders. The proposed lidar method involves a novel two dimensional inversion method that estimates what the ET had to have been to generate lidar-measured two dimensional water vapor concentrations downwind of the riparian area. The information on riparian ET will provide a theoretical basis for testing COPON theory.