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Assessment of retrieved N2O, NO2, and HF profiles from the Atmospheric Infrared Ultraspectral Sounder based on simulated spectra

Wang, Hongmei und Li, Xiaoying und Xu, Jian und Zhang, Xingying und Ge, Shule und Chen, Liangfu und Wang, Yapeng und Zhu, Songyan und Miao, Jing und Si, Yidan (2018) Assessment of retrieved N2O, NO2, and HF profiles from the Atmospheric Infrared Ultraspectral Sounder based on simulated spectra. Sensors, 18 (7), Seiten 1-20. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/s18072209. ISSN 1424-8220.

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Offizielle URL: https://www.mdpi.com/1424-8220/18/7/2209

Kurzfassung

The Atmospheric Infrared Ultraspectral Sounder (AIUS), the first high-resolution (0.02 cm−1) solar occultation sounder, aboard GF5, was launched in May 2018 from China. However, relevant studies about vertical profiles of atmospheric constituents based on its operational data were not conducted until half a year later. Due to an urgent need for Hin-orbit tests, the real spectra (called reference spectra hereafter) were substituted with simulated spectra calculated from the reference forward model (RFM) plus different random noises at different altitudes. In the generation process of the reference spectra for N2O, NO2, and HF species, ACE-FTS (Atmospheric Chemistry Experiment–Fourier Transform Spectrometer instrument on the SCISAT satellite) level 2 products replace corresponding profiles included in the atmospheric background profiles. The optimal estimation method is employed to extract N2O, NO2, and HF profiles in this study. Comparing the retrieved results with ACE-FTS level 2 products, the relative deviations for these three species are calculated. For N2O, the average relative deviation is less than 6% at altitudes below 25 km, while larger deviations are observed in the range of 25–45 km, with the maximum being at ~25%. Additionally, the difference for NO2 is less than 5% in the 20–45 km range, with a larger discrepancy found below 20 km and above 45 km; the maximum deviation reaches ±40%. For HF, the relative deviation is less than 6% for all tangent heights, implying satisfactory retrieval. The vertical resolution, averaging kernel, and number of degrees of freedom are used to assess the retrieval algorithm, which indicate that the retrieved information content is much more attributable to the reference spectra contribution than to the a priori profile. Finally, a large number of retrieval tests are performed for N2O, NO2, and HF in selected areas covering the Arctic region, northern middle latitude, tropics, southern middle latitude, and Antarctic region, and reliable results are obtained. Thus, to a great extent, the algorithm adopted in the AIUS system can process retrievals reliably and precisely.

elib-URL des Eintrags:https://elib.dlr.de/123027/
Dokumentart:Zeitschriftenbeitrag
Titel:Assessment of retrieved N2O, NO2, and HF profiles from the Atmospheric Infrared Ultraspectral Sounder based on simulated spectra
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Wang, HongmeiState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of SciencesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Li, XiaoyingState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of SciencesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Xu, Jianjian.xu (at) dlr.dehttps://orcid.org/0000-0003-2348-125XNICHT SPEZIFIZIERT
Zhang, XingyingNational Satellite Meteorological Center, China Meteorological AdministrationNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ge, ShuleChina Center for Resources Satellite Data and ApplicationNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Chen, LiangfuState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of SciencesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Wang, YapengState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of SciencesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Zhu, SongyanState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of SciencesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Miao, JingState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of SciencesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Si, YidanState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of SciencesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:9 Juli 2018
Erschienen in:Sensors
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:18
DOI:10.3390/s18072209
Seitenbereich:Seiten 1-20
Verlag:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:1424-8220
Status:veröffentlicht
Stichwörter:GF5 AIUS; occultation; retrieval algorithm; microwindow selection; N2O; NO2; HF
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > Atmosphärenprozessoren
Hinterlegt von: Xu, Dr.-Ing. Jian
Hinterlegt am:15 Nov 2018 11:37
Letzte Änderung:14 Dez 2019 04:27

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