ATLAS/ICESat-2 L3B Gridded Antarctic and Arctic Land Ice Height, Version 1

This data set (ATL14) and ATL15 bring the time-varying height estimates provided in ATLAS/ICESat-2 L3B Annual Land Ice Height (ATL11) into a gridded format. ATL14 provides a high resolution (100 m) DEM which is a spatially continuous gridded data set of ice sheet surface height. It can be used to initialize ice sheet models, as boundary conditions for atmospheric models, or to help with the reduction of other satellite data such as optical imagery or synthetic aperture radar (SAR). ATL15 provides coarser resolution (1 km, 10 km, 20 km, and 40 km) height-change maps at 3 month intervals. This allows visualization of height-change patterns and the calculation of integrated regional volume change.本数据集（ATL14）与ATL15将ATLAS/ICESat-2 L3B年度陆地冰高度（ATL11）产品中给出的随时间变化的高程估值转换为格网化格式。 ATL14提供了分辨率为100米的高分辨率数字高程模型（Digital Elevation Model, DEM），该数据集为冰盖表面高程的空间连续格网数据，可用于初始化冰盖数值模式、作为大气数值模式的边界条件，或是辅助处理光学影像、合成孔径雷达（SAR）等其他卫星数据。 ATL15则提供了粗分辨率（1千米、10千米、20千米及40千米）的高程变化图，时间间隔为每3个月。这一设计可支持高程变化模式的可视化，以及区域总体积变化量的计算。