MEaSUREs Northern Hemisphere Terrestrial Snow Cover Extent Daily 25km EASE-Grid 2.0, Version 1

This data set, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, offers users 25 km Northern Hemisphere snow cover extent represented by four different variables. Three of the snow cover variables are derived from the Interactive Multisensor Snow and Ice Mapping System, MODIS Cloud Gap Filled Snow Cover, and passive microwave brightness temperatures, respectively. The fourth variable merges the three source products into a single representation of snow cover.本数据集隶属于美国国家航空航天局（National Aeronautics and Space Administration, NASA）面向科研环境应用的地球系统数据记录计划（Making Earth System Data Records for Use in Research Environments, MEaSUREs），可为用户提供分辨率为25千米的北半球积雪覆盖范围数据，该数据集以四类不同变量进行表征。其中三类积雪变量分别源自交互式多传感器冰雪制图系统（Interactive Multisensor Snow and Ice Mapping System）、MODIS云间隙填充积雪覆盖产品（MODIS Cloud Gap Filled Snow Cover）以及被动微波亮温数据；第四类变量则将上述三类源产品融合为单一的积雪覆盖表征结果。