海冰密集度数据由美国冰雪中心(National Snow and Ice Data Center, NSIDC)提供,该密集度产品由 Nimbus-7卫星上的扫描式多通道微波辐射计(Scanning Multi-frequency Microwave Radiometer, SMMR)和美国国防气象卫星DMSP(Defense Meteorological Satellite Program)搭载
Release of NLCD 2006 provides the first land-cover change database for the Conterminous United States (CONUS) from Landsat Thematic Mapper data. Accuracy assessment...
The Terra Moderate Resolution Imaging Spectroradiometer (MODIS) Vegetation Indices 16-Day (MOD13A1) Version 6.1 product provides Vegetation Index (VI) values at a per pixel basis at 500 meter (m) spat