青藏高原Landsat系列卫星遥感归一化差值水体（NDWI）产品（2020）

1）数据内容：本数据集包含2020年青藏高原地区Landsat时序NDWI产品。2）数据来源及加工方法：主要是在青藏高原Landsat系列卫星地表反射率数据集的基础上，通过NDWI的计算公式进行生产的，即利用绿光波段和近红外波段的差异比值来增强水体信息，并减弱植被、土壤、建筑物等地物的信息；3）数据质量描述：为了标识云、冰雪，并相应生产了质量标识文件（QA）。4) 数据应用成果及前景：该指数便于地表水体信息有效提取，广泛应用于水资源、水文以及林农业等领域。

1) Data Content: This dataset includes Landsat time-series NDWI products for the Qinghai-Tibet Plateau region in 2020.
2) Data Source and Processing Method: It is primarily generated based on the surface reflectance dataset of Landsat series satellites over the Qinghai-Tibet Plateau, following the NDWI calculation formula. Specifically, the normalized difference ratio between the green band and near-infrared band is employed to enhance water body information while suppressing the spectral information of features such as vegetation, soil, and buildings.
3) Data Quality Description: Corresponding quality assessment (QA) files are produced to identify clouds and snow/ice.
4) Data Application Achievements and Prospects: This index enables efficient extraction of surface water body information, and has been widely applied in fields including water resources, hydrology, forestry and agriculture.

搜集汇总

背景与挑战

背景概述

该数据集是2020年青藏高原地区的Landsat系列卫星遥感归一化差值水体（NDWI）产品，基于地表反射率数据通过NDWI公式计算生成，旨在增强水体信息并减弱植被、土壤等干扰。数据空间分辨率为10m-100m，总大小369.07 GB，包含质量标识文件，以GeoTIFF格式存储，适用于水资源、水文等领域的应用。