2009-2020年全球1km、5天地表粗糙度产品

数据集包括2009-2020年全球1km、5天的地表粗糙度产品。地表粗糙度是在中性条件下，风速等于零的某一几何高度。数据共3个波段，分别为空气动力学粗糙度z0、高度归一化空气动力学粗糙度z0/h、质量控制波段。输入数据有基于FY3的全球1km地表覆盖分类产品、 基于FY3的全球1km叶面积指数产品、ICESAT1 GLAS历史森林高度数据、森林变化数据、生态分区数据，采用区分地表类型的参数化算法计算动力学粗糙度。

This dataset provides global 1km, 5-day surface roughness products covering the period from 2009 to 2020. Surface roughness here is defined as a specific geometric height under neutral atmospheric conditions when the wind speed equals zero. The dataset includes three bands: aerodynamic roughness length z0, height-normalized aerodynamic roughness length z0/h, and the quality control band. The input data consists of global 1km land cover classification products based on FY3, global 1km leaf area index products based on FY3, historical forest height data from ICESAT-1 GLAS, forest change data, and ecological zoning data. The aerodynamic roughness is computed using a parametric algorithm that differentiates between different surface types.

搜集汇总

背景与挑战

背景概述

该数据集为2009-2020年全球植被覆盖区域的1公里/5天分辨率地表粗糙度产品，包含空气动力学粗糙度、高度归一化粗糙度和质量控制波段。数据基于多源遥感数据生成，整体精度优于80%，适用于全球变化研究和遥感应用。