RAPID: Request for Ground-Verification of the Luquillo Critical Zone Observatory LIDAR Overflight

RAPID：请求对卢基约关键区天文台激光雷达飞越进行地面验证

• 批准号: 1038497
• 负责人: Wei Wu
• 金额: $ 3.29万
• 依托单位: University of Southern Mississippi
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-15 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1038497&HistoricalAwards=false
• 关键词: RAPID; Request; Ground; Verification; Luquillo

This project will be a ground verification campaign for airborne LiDAR data gathering over the Luquillo Critical Zone Observatory (LCZO). This airborne LiDAR will cover representative research watersheds of the LCZO and extend from the US Forest Service Luquillo Experimental Forest to the surrounding coastal areas. During the airborne data collection a complete set of carefully located (using GPS) biophysical measurements, such as diameter of trees, canopy closure, leaf-area index, and crown height will enable a much more effective modeling of the watershed topography and processes from the LiDAR point cloud. Because the over flight has been scheduled for the summer of 2010, the ground verification campaign must be conducted at the same time. Airborne LiDAR is similar to radar, except that it operates at a much shorter wavelength for detecting small-scale changes in topography. However, to be most effective, ground-based measurements must be done simultaneously to map relevant features such as vegetation height and type, since the LiDAR signal will be received from the top of the tree canopy as well as from the ground. This project will accomplish the task in the Luquillo Critical Zone Observatory to insure that the research progam at this NSF-supported facility will be able to document small changes in watershed characteristics that are the result of climatically-driven weathering and erosion.

该项目将是在Luquillo关键区天文台（LCZO）上收集机载激光雷达数据的地面验证运动。这款空中激光雷达将覆盖LCZO的代表研究流域，并从美国森林服务卢奎洛实验森林延伸到周围的沿海地区。在机载数据收集期间，一组精心定位（使用GPS）的生物物理测量值，例如树木的直径，树冠闭合，叶片面积指数和牙冠高度，将使从LiDar Point Cloud的流域形象和过程进行更有效的建模。由于已安排了2010年夏天的过度飞行，因此必须同时进行地面验证活动。机载激元与雷达相似，只是它以较短的波长运行，用于检测地形的小规模变化。但是，必须同时进行最有效的地面测量，以绘制相关特征，例如植被高度和类型，因为将从树冠的顶部以及从地面接收LiDAR信号。该项目将在Luquillo关键区观测站完成任务，以确保该NSF支持的设施的研究进程能够记录由于气候驱动的风化和侵蚀而导致的流域特征的小变化。