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

利用单多普勒激光雷达数据的风和热力学反演研究对流边界层中的应力和 TKE 剖面

• 批准号: 9908453
• 负责人: Rob Newsom
• 金额: $ 25.72万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2003-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908453&HistoricalAwards=false
• 关键词: Investigation; Stress; TKE; Profiles; Convective

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.

该项目将把已为多普勒雷达开发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。目标是构建距离激光雷达几公里范围内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美国国家海洋和大气管理局环境技术实验室开发的新的高分辨率多普勒激光雷达(HRDL)，分析方法是NCAR开发的风和温度反演算法。与纽瑟姆博士合作的是ETL的罗伯特·班塔博士和NCAR的孙娟博士。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。这些观测将提供关于气流的详细数据，用于研究边界层中的湍流和涡流输送，并用于大涡模拟的初始化和验证。