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Retrieval and Validation of XCO2 from TanSat Target Mode Observations in Beijing

文献类型：期刊论文

作者Bao, Zhengyi1,2; Zhang, Xingying3; Yue, Tianxiang1,2; Zhang, Lili4; Wang, Zong1,2; Jiao, Yimeng1,2; Bai, Wenguang3; Meng, Xiaoyang5
刊名REMOTE SENSING
出版日期2020-09-01
卷号12期号:18页码:17
关键词TanSat target mode XCO2 retrieval validation Beijing FTS
DOI10.3390/rs12183063
通讯作者Zhang, Xingying(zxy@cma.gov.cn)
英文摘要Satellite observation is one of the main methods used to monitor the global distribution and variation of atmospheric carbon dioxide (CO2). Several CO2 monitoring satellites have been successfully launched, including Japan's Greenhouse Gases Observing SATellite (GOSAT), the USA's Orbiting Carbon Observatory-2 (OCO-2), and China's Carbon Dioxide Observation Satellite Mission (TanSat). Satellite observation targeting the ground-based Fourier transform spectrometer (FTS) station is the most effective technique for validating satellite CO2 measurement precision. In this study, the coincident observations from TanSat and ground-based FTS were performed numerous times in Beijing under a clear sky. The column-averaged dry-air mole fraction of carbon dioxide (XCO2) obtained from TanSat was retrieved by the Department for Eco-Environmental Informatics (DEEI) of China's State Key Laboratory of Resources and Environmental Information System based on a full physical model. The comparison and validation of the TanSat target mode observations revealed that the average of the XCO2 bias between TanSat retrievals and ground-based FTS measurements was 2.62 ppm, with a standard deviation (SD) of the mean difference of 1.41 ppm, which met the accuracy standard of 1% required by the mission tasks. With bias correction, the mean absolute error (MAE) improved to 1.11 ppm and the SD of the mean difference fell to 1.35 ppm. We compared simultaneous observations from GOSAT and OCO-2 Level 2 (L2) bias-corrected products within a +/- 1 degrees latitude and longitude box centered at the ground-based FTS station in Beijing. The results indicated that measurements from GOSAT and OCO-2 were 1.8 ppm and 1.76 ppm higher than the FTS measurements on 20 June 2018, on which the daily observation bias of the TanSat XOC2 results was 1.87 ppm. These validation efforts have proven that TanSat can measure XCO2 effectively. In addition, the DEEI-retrieved XCO2 results agreed well with measurements from GOSAT, OCO-2, and the Beijing ground-based FTS.
WOS关键词ORBITING CARBON OBSERVATORY-2 ; PART 1 ; CO2 ; ALGORITHM ; SATELLITE ; SCIAMACHY ; SPACE
资助项目National Natural Science Funds of China[41590844] ; National Natural Science Funds of China[41775028] ; National Natural Science Funds of China[41421001] ; National Natural Science Funds of China[41930647] ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences[XDA20030203] ; National Key R&D Program of China[2017YFB0504001] ; National Key R&D Program of China[2016YFB0500705] ; Innovation Project of LREIS[O88RA600YA]
WOS研究方向Remote Sensing
语种英语
出版者MDPI
WOS记录号WOS:000582023200001
资助机构National Natural Science Funds of China ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Key R&D Program of China ; Innovation Project of LREIS
源URL[http://ir.igsnrr.ac.cn/handle/311030/157111]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Xingying
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China
4.Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100094, Peoples R China
5.Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Bao, Zhengyi,Zhang, Xingying,Yue, Tianxiang,et al. Retrieval and Validation of XCO2 from TanSat Target Mode Observations in Beijing[J]. REMOTE SENSING,2020,12(18):17.
APA Bao, Zhengyi.,Zhang, Xingying.,Yue, Tianxiang.,Zhang, Lili.,Wang, Zong.,...&Meng, Xiaoyang.(2020).Retrieval and Validation of XCO2 from TanSat Target Mode Observations in Beijing.REMOTE SENSING,12(18),17.
MLA Bao, Zhengyi,et al."Retrieval and Validation of XCO2 from TanSat Target Mode Observations in Beijing".REMOTE SENSING 12.18(2020):17.

入库方式： OAI收割

来源：地理科学与资源研究所

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