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Development of GOS AT ground data system at NIES and data processing strategy

机译:NIES的GOS AT地面数据系统开发及数据处理策略

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摘要

GOS AT Project is a joint project of MOE (Ministry of the Environment), JAXA (Japan Aerospace Exploration Agency) and NIES (National Institute for Environmental Studies). Data acquired by TANSO-FTS (Fourier Transform Spectrometer) and TANSO-CAI (Cloud and Aerosol Imager) on GOS AT will be collected at Tsukuba Space Center at JAXA. The level 1A and 1B data of FTS (interferogram and spectra, respectively) and the level 1A of CAI (unconnected data) will be generated at JAXA and will be transferred to GOSAT Data Handling facility (DHF) at NIES for further processing. Radiometric and geometric correction will be applied to CAI LI A data to generate CAI LIB data. From CAI LIB data, cloud coverage and aerosol information (CAI Level 2 data) will be estimated. The FTS data that is recognized to have "low cloud coverage" by CAI will be processed to generate column amount of carbon dioxide CO_2 and methane CH_4 (FTS Level 2 data). Level 3 data will be "global map column amount" of green house gases averaged in time and space. Level 4 data will be global distribution of carbon source/sink model and re-calculated forward model estimated by inverse model. Major data flow will be also described. The Critical Design Review of the DHF was completed in the end of July of 2007 to prepare the scheduled launch of GOSAT in December 2008. The data products can be searched and will be open to the public through GOSAT DHF after the data validation process.
机译:GOS AT项目是MOE(环境部),JAXA(日本航空航天局)和NIES(国家环境研究所)的联合项目。 TANSO-FTS(傅里叶变换光谱仪)和TANSO-CAI(云和气溶胶成像仪)在GOS AT上获得的数据将在JAXA的筑波航天中心收集。 FTS的1A和1B级数据(分别是干涉图和光谱)和CAI的1A级数据(未连接数据)将在JAXA生成,并将传输到NIES的GOSAT数据处理设施(DHF)进行进一步处理。辐射度和几何校正将应用于CAI LIA数据以生成CAI LIB数据。根据CAI LIB数据,将估算云层覆盖和气溶胶信息(CAI 2级数据)。被CAI识别为“云量低”的FTS数据将被处理以生成二氧化碳CO_2和甲烷CH_4的柱量(FTS 2级数据)。 3级数据将是在时间和空间上平均的温室气体的“全球地图列数量”。第4级数据将是碳源/汇模型的全局分布以及通过逆模型估算的重新计算的正模型。也将描述主要数据流。 DHF的关键设计评审已于2007年7月完成,以准备在2008年12月启动GOSAT。在进行数据验证之后,可以搜索数据产品,并通过GOSAT DHF向公众开放。

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