MODIS/Aqua Snow Cover 5-Min L2 Swath 500m NRT

The MODIS/Aqua Snow Cover 5-Min L2 Swath 500m Near Real Time (NRT), short name MYD10_L2, data set contains snow cover and Quality Assessment (QA) data, latitudes and longitudes in compressed Hierarchical Data Format-Earth Observing System (HDF-EOS) format, and corresponding metadata. Latitude and longitude geolocation fields are at 5 km resolution while all other fields are at 500 m resolution. There are two separate snow fields in this data set. The first field, snow cover, classifies each cloud-free land or inland water body pixel as snow-covered or snow-free, the second field, fractional snow cover, provides the percent of snow cover within each pixel for land and inland water bodies. MODIS snow cover data are based on a snow mapping algorithm that employs a Normalized Difference Snow Index (NDSI) and other criteria tests. Data are stored in HDF-EOS format.

MODIS/Aqua 雪覆盖 5 分钟 L2 扫描带 500 米近实时（NRT）数据集，简称 MYD10_L2，包含雪覆盖和质控评估（QA）数据，以压缩的层次数据格式-地球观测系统（HDF-EOS）格式存储纬度和经度，以及相应的元数据。地理定位的纬度和经度字段分辨率为 5 公里，而其他所有字段分辨率为 500 米。该数据集包含两个独立的雪覆盖字段。第一个字段，雪覆盖，将无云陆地或内陆水体像素分类为有雪覆盖或无雪覆盖，第二个字段，分数雪覆盖，提供每个像素内雪覆盖的百分比。MODIS 雪覆盖数据基于一种采用归一化差异雪指数（NDSI）及其他标准测试的雪图算法。数据以 HDF-EOS 格式存储。