ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles, Version 1

ATL04 contains along-track normalized relative backscatter profiles of the atmosphere. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Calibration coefficient values derived from data within the polar regions are also included. 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.ATL04数据集包含大气的沿轨归一化相对后向散射剖面。该产品包含532 nm（14公里）的完整未校准衰减后向散射剖面，采样频率为每秒25次，垂直区间约30米。此外还包含从极地地区数据中推导得出的校准系数值。这些数据由冰、云和陆地高程卫星-2（ICESat-2）观测平台搭载的高级地形激光高度计系统（ATLAS）仪器获取。