SAGE III Meteor-3M L2 Monthly Cloud Presence Data (Native) V004

g3acldb_004 is the Stratospheric Aerosol and Gas Experiment III (SAGE III) on the Meteor-3M (M-3M) platform (SAGE III/M3M) SAGE III Meteor-3M L2 Monthly Cloud Presence Data (Native) Version 4 data product. It is monthly data file coincident with solar event granules, that provides a monthly compilation of polar cloud presence from SAGE III during data capture of the granules. SAGE III obtains profile measurements of aerosol extinction, ozone, water vapor, nitrogen dioxide, nitrogen trioxide, chlorine dioxide and cloud formations throughout the mesosphere, stratosphere, and upper troposphere with a vertical resolution of 0.5 - 1 km resolution. SAGE III was a fourth generation, satellite-borne instrument and a crucial element in NASA's Earth Observing System (EOS) . The instrument was launched on the Russian M-3M spacecraft in December 2001. The M-3M and SAGE III missions were terminated on March 6, 2006, because of a power supply system failure resulting in loss of communication with the satellite. The newest SAGE mission, SAGE III on ISS, was launched in 2017.

g3acldb_004 是搭载于Meteor-3M（M-3M）平台的平流层气溶胶与气体实验三号卫星（Stratospheric Aerosol and Gas Experiment III，SAGE III）的SAGE III/M3M L2级月度云量数据（原生格式）版本4数据产品。该数据集为与太阳事件颗粒同步的月度数据文件，收录了SAGE III在采集该类颗粒数据期间获取的极地云量月度汇总结果。SAGE III可对中层大气、平流层及对流层上部的气溶胶消光、臭氧、水汽、二氧化氮、三氧化氮、二氧化氯以及云系进行廓线测量，垂直分辨率达0.5至1千米。SAGE III为第四代星载仪器，是美国国家航空航天局（National Aeronautics and Space Administration，NASA）地球观测系统（Earth Observing System，EOS）的关键组成部分。该仪器于2001年12月搭载俄罗斯M-3M航天器发射升空。2006年3月6日，因供电系统故障导致卫星失联，M-3M与SAGE III任务正式终止。最新的SAGE任务——搭载于国际空间站（International Space Station，ISS）的SAGE III，于2017年发射升空。