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First observation of tropospheric nitrogen dioxide from the Environmental Trace Gases Monitoring Instrument onboard the GaoFen-5 satellite

文献类型：期刊论文

作者Zhang, Chengxin2; Liu, Cheng1,3,4,5; Chan, Ka Lok6; Hu, Qihou4; Liu, Haoran2; Li, Bo2; Xing, Chengzhi2; Tan, Wei4; Zhou, Haijin4; Si, Fuqi4
刊名LIGHT-SCIENCE & APPLICATIONS
出版日期2020-04-20
卷号9
ISSN号2047-7538
DOI10.1038/s41377-020-0306-z
通讯作者Liu, Cheng(chliu81@ustc.edu.cn) ; Chan, Ka Lok(ka.chan@dlr.de)
英文摘要Remote sensing: Tuned-up satellite identifies pollutant hot spots Improvements to a high-resolution spectrometer onboard China's recently-launched GaoFen-5 (GF-5) satellite can give researchers a new tool to assess atmospheric trace gases. Cheng Liu from the University of Science and Technology of China and his colleagues reported the first successful retrieval of nitrogen dioxide from the GF-5 orbiter thanks to crucial adjustments to calibration algorithms. The satellite's payload Environmental Trace Gases Monitoring Instrument (EMI) uses visible spectroscopic measurements to detect nitrogen dioxide in the atmosphere, which can be used to identify the spatial distribution of pollution emissions on the Earth. To overcome on-orbit issues including detector saturation, the team has optimized the spectral retrieval settings by spectral precalibration, fitting wavelength adjustment, reference spectrum selection, etc. Comparisons to other satellite and ground measurements revealed the optimization effort yielded reliable results for monitoring pollution levels. The Environmental Trace Gases Monitoring Instrument (EMI) is the first Chinese satellite-borne UV-Vis spectrometer aiming to measure the distribution of atmospheric trace gases on a global scale. The EMI instrument onboard the GaoFen-5 satellite was launched on 9 May 2018. In this paper, we present the tropospheric nitrogen dioxide (NO2) vertical column density (VCD) retrieval algorithm dedicated to EMI measurement. We report the first successful retrieval of tropospheric NO2 VCD from the EMI instrument. Our retrieval improved the original EMI NO2 prototype algorithm by modifying the settings of the spectral fit and air mass factor calculations to account for the on-orbit instrumental performance changes. The retrieved EMI NO2 VCDs generally show good spatiotemporal agreement with the satellite-borne Ozone Monitoring Instrument and TROPOspheric Monitoring Instrument (correlation coefficient R of similar to 0.9, bias < 50%). A comparison with ground-based MAX-DOAS (Multi-Axis Differential Optical Absorption Spectroscopy) observations also shows good correlation with an R of 0.82. The results indicate that the EMI NO2 retrieval algorithm derives reliable and precise results, and this algorithm can feasibly produce stable operational products that can contribute to global air pollution monitoring.
WOS关键词NO2 ; RETRIEVAL ; EMISSIONS ; TROPOMI ; CHINA ; ALGORITHMS ; CHEMISTRY ; CLIMATE ; QUALITY ; HAZE
资助项目National Natural Science Foundation of China[41722501] ; National Natural Science Foundation of China[91544212] ; National Natural Science Foundation of China[51778596] ; National Natural Science Foundation of China[41575021] ; National Key Research and Development Program of China[2018YFC0213104] ; National Key Research and Development Program of China[2017YFC0210002] ; National Key Research and Development Program of China[2016YFC0203302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23020301] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0102] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0205] ; National High-Resolution Earth Observation Project of China[05-Y30B01-9001-19/20-3]
WOS研究方向Optics
语种英语
WOS记录号WOS:000529214000003
出版者NATURE PUBLISHING GROUP
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Project for Causes and Control of Heavy Air Pollution ; National High-Resolution Earth Observation Project of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103411]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Cheng; Chan, Ka Lok
作者单位1.Univ Sci & Technol China, Key Lab Precis Sci Instrumentat, Anhui Higher Educ Inst, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
3.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Peoples R China
4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
5.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
6.German Aerosp Ctr DLR, Remote Sensing Technol Inst IMF, Oberpfaffenhofen, Germany
推荐引用方式
GB/T 7714		 Zhang, Chengxin,Liu, Cheng,Chan, Ka Lok,et al. First observation of tropospheric nitrogen dioxide from the Environmental Trace Gases Monitoring Instrument onboard the GaoFen-5 satellite[J]. LIGHT-SCIENCE & APPLICATIONS,2020,9.
APA Zhang, Chengxin.,Liu, Cheng.,Chan, Ka Lok.,Hu, Qihou.,Liu, Haoran.,...&Liu, Jianguo.(2020).First observation of tropospheric nitrogen dioxide from the Environmental Trace Gases Monitoring Instrument onboard the GaoFen-5 satellite.LIGHT-SCIENCE & APPLICATIONS,9.
MLA Zhang, Chengxin,et al."First observation of tropospheric nitrogen dioxide from the Environmental Trace Gases Monitoring Instrument onboard the GaoFen-5 satellite".LIGHT-SCIENCE & APPLICATIONS 9(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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