中国东北地区500m分辨率积雪季逐日无云NDSI数据集（2000-2020年）

中国东北地区是我国三大积雪区之一。该地区地处高纬度，冬季太阳高度角低，光照条件差，并且该地区具有很高的森林覆盖度。当前MODISV6积雪产品提供的归一化差值积雪指数（NDSI）在中国东北地区，尤其是东北森林地区存在明显的过度云掩膜问题，严重影响了该产品在积雪时空变化研究中的应用。同时，MODISV6积雪产品...

Northeast China is one of the three major snow-covered regions across China. Situated at high latitudes, this region experiences low solar elevation angles during winter, resulting in poor lighting conditions, and it also has a high forest coverage rate. Currently, the Normalized Difference Snow Index (NDSI) derived from the MODISV6 snow product exhibits significant excessive cloud masking problems in Northeast China, especially in its forested areas, which severely hampers the application of this product in research on spatiotemporal changes of snow cover. Meanwhile, the MODISV6 snow product...

搜集汇总

背景与挑战

背景概述

该数据集提供了中国东北地区2000-2020年积雪季的逐日无云NDSI数据，分辨率为500米，适用于积雪面积制图和积雪物候研究。数据集通过多种方法处理，解决了MODIS V6积雪产品在东北地区的云掩膜和森林积雪漏分问题，具有较高的精度和时空连续性。