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
Landsat Extended Acquisitions of the Poles (LEAP) imaging plan is a Landsat special request data collection program for Earth's polar regions that include Antarctica, Greenland, and Arctic sea ice geo
The dataset is derived from Landsat data which is between DaxiHaizi Reservoir and Chala Reservoir. It consists of one scene selected in July of each year from 1988 to 2008. The resolution of its sampl
