MODIS/Aqua Sea Ice Extent 5-Min L2 Swath 1km, Version 5

MODIS/Aqua Sea Ice Extent 5-Min L2 Swath 1km (MYD29) data set contains fields for sea ice by reflectance, sea ice by reflectance pixel Quality Assessment (QA), Ice Surface Temperature (IST), IST pixel QA, latitudes, and longitudes in compressed Hierarchical Data Format-Earth Observing System (HDF-EOS) format, along with corresponding metadata. Latitude and longitude geolocation fields are at 5 km resolution, while all other fields are at 1 km resolution. The sea ice algorithm uses a Normalized Difference Snow Index (NDSI) modified for sea ice to distinguish sea ice from open ocean based on reflective characteristics.

中分辨率成像光谱仪/水色卫星（MODIS/Aqua）海冰范围5分钟级L2级条带1千米分辨率（MYD29）数据集，涵盖基于反射率的海冰、基于反射率的海冰像元质量评估（QA）、冰面温度（Ice Surface Temperature，IST）、IST像元质量评估、纬度与经度数据，以压缩分层数据格式-地球观测系统（Hierarchical Data Format-Earth Observing System，HDF-EOS）存储，并附带对应元数据。其中，纬度与经度地理定位字段的分辨率为5千米，其余所有字段的分辨率均为1千米。该数据集的海冰反演算法采用针对海冰优化的归一化差分雪指数（Normalized Difference Snow Index，NDSI），基于反射特性实现海冰与开阔大洋的区分。