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

Zhang, Chengxin and Liu, Cheng and Chan, Ka Lok and Hu, Qihou and Liu, Haoran and Li, Bo and Xing, Chengzhi and Tan, Wei and Zhou, Haijin and Si, Fuqi and Liu, Jianguo (2020) First observation of tropospheric nitrogen dioxide from the Environmental Trace Gases Monitoring Instrument onboard the GaoFen-5 satellite. Light: Science and Applications, 9 (1), pp. 66-75. Springer. DOI: 10.1038/s41377-020-0306-z ISSN 2047-7538

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Official URL: https://doi.org/10.1038/s41377-020-0306-z

Abstract

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 ~0.9, bias <þinspace50%). 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.

Item URL in elib:https://elib.dlr.de/134885/
Document Type:Article
Title:First observation of tropospheric nitrogen dioxide from the Environmental Trace Gases Monitoring Instrument onboard the GaoFen-5 satellite
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Zhang, ChengxinSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei, ChinaUNSPECIFIED
Liu, ChengSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei, ChinaUNSPECIFIED
Chan, Ka LokKa.Chan (at) dlr.deUNSPECIFIED
Hu, QihouKey Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, ChinaUNSPECIFIED
Liu, HaoranSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei, ChinaUNSPECIFIED
Li, BoSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei, ChinaUNSPECIFIED
Xing, ChengzhiSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei, ChinaUNSPECIFIED
Tan, WeiSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei, ChinaUNSPECIFIED
Zhou, HaijinKey Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, ChinaUNSPECIFIED
Si, FuqiKey Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, ChinaUNSPECIFIED
Liu, JianguoKey Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, ChinaUNSPECIFIED
Date:30 March 2020
Journal or Publication Title:Light: Science and Applications
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:9
DOI :10.1038/s41377-020-0306-z
Page Range:pp. 66-75
Publisher:Springer
ISSN:2047-7538
Status:Published
Keywords:satellite, trace gas, NO2, EMI
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):Vorhaben Spectroscopic Methods in Remote Sensing
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Chan, Ka Lok
Deposited On:13 May 2020 14:06
Last Modified:13 May 2020 14:06

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