一个全球多传感器数据集,来自Landsat-8和Sentinel-2卫星测量的地表水指数
Yohei Miura1, Mohammad Shamsudduha2, Anawat Suppasri3
1Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
Scientific data
|July 17, 2025
概括
本研究使用来自Landsat-8和Sentinel-2卫星数据的三个指数 (NDWI,MNDWI,WI2015) 提供了每月的地表水地图. 这些高分辨率地图有助于水资源管理和生态系统保护.
科学领域:
- 地球观测科学 地球观测科学
- 水文学的水文学
- 环境监测 环境监测
背景情况:
- 对地表水面积的时空地图绘制对于水资源管理,洪水/干旱监测和生态系统保护至关重要.
- 光学卫星数据和衍生的地表水指数对于估计地表水覆盖面积是有效的.
- 全球,高分辨率的地表水测绘数据集,具有多个指数和广泛的时间/空间范围,很少.
研究的目的:
- 使用多个水指数,每月生成高分辨率的地表水地图.
- 为地表水分布预测提供定期更新的数据集.
- 在全球气候变化挑战中支持可持续的地表水资源管理.
主要方法:
- 利用Landsat-8和Sentinel-2卫星数据进行高分辨率的地球观测.
- 应用了三个不同的水指数:规范差异水指数 (NDWI),修改的NDWI (MNDWI) 和2015年水指数 (WI2015).
- 为2019年1月至2021年12月期间生成月度地表水面积地图.
主要成果:
- 使用NDWI,MNDWI和WI2015开发了每月的地表水地图.
- 涵盖了2019年1月至2021年12月期间的高分辨率卫星数据.
- 建立了一个持续更新新卫星数据的基础.
结论:
- 生成的地表水地图为了解水资源分布提供了有价值的基线.
- 这些地图为气候变化下的可持续水资源管理提供了关键信息.
- 数据集将不断更新,确保其对未来环境监测的相关性.
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