ATLAS/ICESat-2 ATL03 Ancillary Masks, Version 1

This ancillary ICESat-2 data set contains four static surface masks (land ice, sea ice, land, and ocean) provided by ATL03 to reduce the volume of data that each surface-specific along-track data product is required to process. For example, the land ice surface mask directs the ATL06 land ice algorithm to consider data from only those areas of interest to the land ice community. Similarly, the sea ice, land, and ocean masks direct ATL07, ATL08, and ATL12 algorithms, respectively.
A detailed description of all four masks can be found in section 4 of the Algorithm Theoretical Basis Document (ATBD) for ATL03 linked under technical references.

本辅助ICESat-2数据集包含由ATL03提供的四类静态地表掩膜（陆地冰、海冰、陆地与海洋），以降低各专项地表沿轨数据产品所需处理的数据体量。例如，陆地冰地表掩膜会引导ATL06陆地冰算法仅处理陆地冰研究领域关注的区域内的数据。同理，海冰、陆地及海洋掩膜将分别引导ATL07、ATL08与ATL12算法执行对应运算。四类掩膜的详细说明可参阅技术参考项下链接的ATL03算法理论基础文档（Algorithm Theoretical Basis Document，ATBD）的第4章节。