Global Vegetation Height Metrics from GEDI and ICESat2

This dataset provides global rasters of relative height metrics for vegetation from Global Ecosystem Dynamics Investigation (GEDI) L2A data and Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) L3A ATL08 data at 100-, 200-, 500-, and 1000-m spatial resolutions. The metrics include the relative heights RH98, RH90, RH75, and RH50, corresponding to the height at which the respective 98th, 90th, 75th, and 50th percentile of returned energy is reached relative to the ground. These metrics provide measures of vegetation canopy height and structure. The different relative height metrics were intercalibrated over the overlap area (50 - 52 degrees N). GEDI data were collected from 2019-2022, and ICESat2 data were from 2019-2021. The data are provided in cloud optimized GeoTIFF format.

本数据集基于全球生态系统动态调查（Global Ecosystem Dynamics Investigation, GEDI）L2A数据与冰、云与陆地高程卫星-2（Ice, Cloud, and Land Elevation Satellite-2, ICESat-2）L3A ATL08数据，生成了空间分辨率分别为100m、200m、500m及1000m的植被相对高度指标全球栅格数据集。该数据集包含RH98、RH90、RH75与RH50四类相对高度指标，分别对应相对于地面的回波能量达到98%、90%、75%及50%百分位时的高度。此类指标可用于表征植被冠层的高度与结构特征。不同相对高度指标已在重叠区域（北纬50°至52°）完成交叉定标。其中GEDI数据采集于2019年至2022年，ICESat-2数据采集于2019年至2021年。本数据集采用云优化GeoTIFF（Cloud Optimized GeoTIFF）格式提供。