MODIS daily cloud-free snow cover area product for Sanjiangyuan from 2000 to 2019

The dataset was produced based on MODIS data. Parameters and algorithm were revised to be suitable for the land cover type in the Three-River-Source Regions. By using the Markov de-cloud algorithm, SSM/I snow water equivalent data was fused to the result. Finally, high accuracy daily de-cloud snow cover data was produced. The data value is 0(no snow) or 1(snow). The spatial resolution is 500m, the time period is from 2000-2-24 to 2019-12-31.Data format is geotiff, Arcmap or python+GDAL were recommended to open and process the data.

本数据集基于MODIS数据进行构建。针对三江源地区土地覆盖类型的特点，对参数和算法进行了优化调整。通过应用马尔可夫去云算法，将SSM/I雪水当量数据融合至结果中。最终生成了高精度的每日去云雪覆盖数据。数据值为0（无雪）或1（有雪）。空间分辨率为500米，时间跨度为2000年2月24日至2019年12月31日。数据格式为geotiff，建议使用Arcmap或python+GDAL进行数据打开和处理。