ATLAS/ICESat-2 L3A Ocean Surface Height, Version 4

As of 23 September 2022, this data set is retired and no longer available for download. Per our agreement with the data provider, NSIDC only archives the most recent version of each of the ICESat-2 standard products and the version that preceded it. The most recent version is available from https://nsidc.org/data/icesat-2/data-sets This data set (ATL12) contains along-track sea surface heights at variable length scales over cloud-free regions. Estimates of height distributions, surface roughness, surface slope, and apparent reflectance are also provided. The data were acquired by the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) observatory.截至2022年9月23日，本数据集已退役，不再提供下载服务。根据与数据提供方达成的协议，美国国家冰雪数据中心（National Snow and Ice Data Center，NSIDC）仅存档各ICESat-2标准产品的最新版本及其前序版本。最新版本可通过https://nsidc.org/data/icesat-2/data-sets获取。 本数据集（ATL12）包含无云区域内不同长度尺度下的沿轨海面高度数据，同时还提供高度分布、地表粗糙度、地表坡度以及表观反射率的估算结果。该数据由搭载于冰、云和陆地高程卫星2号（Ice, Cloud and land Elevation Satellite-2，ICESat-2）的先进地形激光测高系统（Advanced Topographic Laser Altimeter System，ATLAS）采集获得。