CALIPSO Wide Field Camera Level 1B Calibration data, V4-00

CAL_WFC_L1_Cal-Standard-V4-00 is the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Wide Field Camera (WFC)Level 1B Calibration Version 4-00 data product. The WFC Level 1B Calibration data products contain geolocated nighttime digital count data. The calibration data is collected over a 25-second segment on the dark side of every orbit. CALIPSO was a partnership between NASA and the French Space Agency, CNES. CALIPSO was launched on April 28, 2006 to study the many roles played by clouds and aerosols in Earth’s climate and weather. It flew in the international A-Train constellation for coincident Earth observations from launch until September 13, 2018,when CALIPSO began lowering its orbit from 705 km to 688 km (428 miles) above the Earth to resume formation flying with CloudSat as part of the “C-Train”. The CALIPSO satellite carried three remote sensing instruments: the Cloud-Aerosol Lidar with Orthogonal Polarization(CALIOP), the Imaging Infrared Radiometer (IIR), and the Wide Field-of-View Camera (WFC). By mutual agreement between NASA and CNES, the CALIPSO science mission concluded on August1, 2023.

CAL_WFC_L1_Cal-Standard-V4-00 是云气溶胶激光雷达与红外探路者卫星观测（Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation, CALIPSO）计划的宽场相机（Wide Field Camera, WFC）1B级定标V4-00版本数据产品。该WFC 1B级定标数据产品包含带有地理定位信息的夜间数字计数数据。定标数据采集于每个轨道暗侧一段25秒的时段。CALIPSO是美国国家航空航天局（National Aeronautics and Space Administration, NASA）与法国国家空间研究中心（Centre National d'Études Spatiales, CNES）的合作项目。该卫星于2006年4月28日发射升空，旨在研究云与气溶胶在地球气候和天气系统中发挥的多重作用。自发射至2018年9月13日，它始终参与“国际A-Train”星座编队，开展协同对地观测任务；2018年9月13日后，CALIPSO开始将轨道高度从705千米降至688千米（约428英里），以便与云卫星CloudSat组成“C-Train”编队，恢复协同观测任务。CALIPSO卫星搭载三台遥感仪器：正交偏振云气溶胶激光雷达（Cloud-Aerosol Lidar with Orthogonal Polarization, CALIOP）、成像红外辐射计（Imaging Infrared Radiometer, IIR）以及宽视场相机（Wide Field-of-View Camera, WFC）。根据美国国家航空航天局与法国国家空间研究中心的共同协议，CALIPSO科学任务于2023年8月1日正式终止。