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

MODIS/Aqua Sea Ice Extent 5-Min L2 Swath 1km Near Real Time (NRT), short name MYD29, contains the following fields: sea ice by reflectance, sea ice by reflectance pixel quality assurance (QA), ice surface temperature (IST), IST pixel QA, sea ice by IST, combined sea ice, latitudes, and longitudes in 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 and thermal characteristics.

MODIS/Aqua 海冰范围 5 分钟 L2 扫描带 1 公里近实时（NRT）数据集，简称 MYD29，包含以下字段：反射率海冰、反射率海冰像素质量保证（QA）、冰面温度（IST）、IST 像素 QA、IST 海冰、综合海冰、纬度和经度（以 HDF-EOS 格式存储），以及相应的元数据。纬度和经度地理定位字段分辨率为 5 公里，而其他所有字段分辨率为 1 公里。海冰算法采用经过海冰特性修改的正常化差分雪指数（NDSI），以区分海冰与开阔海洋，依据反射率和热特性。