Investigation of Stress and TKE Profiles in the Convective Boundary Layer Using Wind and Thermodynamic Retrievals from Single-Doppler Lidar Data

本课题将多普勒雷达的四维数据同化技术应用于多普勒激光雷达。激光雷达具有比雷达更高的空间分辨率和更高的速度测量精度的优点。目标是在距离激光雷达几公里的范围内，构建大气边界层中风的水平模式的高分辨率地图。实验中使用的仪器是由NOAA环境技术实验室开发的新型高分辨率多普勒激光雷达（HRDL）；分析方法为NCAR开发的风温反演算法。与Newsom博士合作的将是ETL的Robert Banta博士和NCAR的Juanzhen Sun博士。作为该项目的一部分，激光雷达将在1999年10月的CASES-99边界层项目期间运行。这些观测将为边界层湍流和涡旋输送的研究以及大涡旋模拟的初始化和验证提供详细的气流数据。

This project will adapt for application to Doppler lidar the techniques of four-dimensional data assimilation that have been developed for Doppler radar. Lidar offers the advantages of higher spatial resolution than possible with radar and also greater precision in velocity measurement. The goal is to construct high-resolution maps of the horizontal pattern of the wind in the atmospheric boundary layer within a range of several kilometers from the lidar. The instrument to be used in the experiments is the new high-resolution Doppler lidar (HRDL) developed at the Environmental Technology Laboratory of NOAA; the analysis method is the algorithm for wind and temperature retrieval developed at NCAR. Collaborating with Dr. Newsom will be Dr. Robert Banta of ETL and Dr. Juanzhen Sun of NCAR. As part of the project, the lidar will be operated during the CASES-99 boundary-layer project of October 1999. The observations will provide detailed data on airflow for application to studies of turbulence and eddy transports in the boundary layer and to the initialization and verification of large eddy simulations.