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.

该项目将是在卢基略临界区天文台（LCZO）上空收集机载激光雷达数据的地面验证活动。该机载激光雷达将覆盖LCZO的代表性研究流域，并从美国林务局卢基略实验森林延伸到周围的沿海地区。在机载数据收集过程中，一整套精心定位（使用GPS）的生物物理测量，如树木直径，树冠郁闭度，叶面积指数和树冠高度，将使一个更有效的流域地形和过程的建模激光雷达点云。由于飞越定于2010年夏季进行，因此必须同时进行地面核查活动。机载激光雷达类似于雷达，只是它的工作波长要短得多，用于探测地形的小尺度变化。然而，为了最有效，必须同时进行地面测量，以绘制相关特征，如植被高度和类型，因为激光雷达信号将从树冠顶部和地面接收。该项目将完成卢基略临界区观测站的任务，以确保该NSF支持设施的研究机构能够记录气候驱动的风化和侵蚀导致的流域特征的微小变化。