2000-2021年黄河源区无缝MODIS积雪覆盖面积比例数据集

生产背景：黄河源区是黄河流域的主要产水区和水源涵养区，积雪融水是源区的重要水源之一，高精度的积雪面积数据集是源区生态水文模拟、气候变化等研究的基础。然而，MODIS 积雪产品中大量的云覆盖，导致了近乎一半的信息缺失。因黄河源区季节性积雪多呈现出雪层偏浅、斑块状分布且消融快等特点，使得...Production Background: The source region of the Yellow River is the main water-producing and water-conservation area of the Yellow River Basin, and snowmelt is one of its important water sources. High-precision snow cover area datasets serve as the foundation for research such as ecohydrological simulation and climate change studies in this region. However, extensive cloud coverage in MODIS snow cover products leads to nearly half of the information being missing. Due to the characteristics of seasonal snow cover in the Yellow River source region, such as relatively shallow snow depth, patchy distribution and rapid ablation, the...

搜集汇总

背景与挑战

背景概述

该数据集是2000-2021年黄河源区的无缝MODIS积雪覆盖面积比例数据，通过部分卷积神经网络（PCNN）技术重建云像元，解决了原始MODIS产品中云覆盖导致的数据缺失问题，生成了逐日、500米空间分辨率的连续积雪监测产品。数据集具有高精度（总体精度达94%），覆盖21个完整积雪季，适用于黄河源区的积雪分布、雪水储量估计和气候变化研究等应用。