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In-flight Retrieval of SCIAMACHY Instrument Spectral Response Function

Hamidouche, Mourad and Lichtenberg, Günter (2018) In-flight Retrieval of SCIAMACHY Instrument Spectral Response Function. Remote Sensing, 10 (3), pp. 1-18. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/rs10030401. ISSN 2072-4292.

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Official URL: http://www.mdpi.com/2072-4292/10/3/401


The instrument Spectral Response Function (ISRF) has a strong impact on spectral calibration and the atmospheric trace gases retrievals. An accurate knowledge or a fine characterization of the ISRF shape and its FWHM (Full width at half maximum) as well as ist temporal behavior is therefore crucial. Designing a strategy for the characterization of the ISRF both on ground and in-flight is critical for future missions, such as the spectral imagers in the Copernicus program. We developed an algorithm to retrieve the instrument ISRF in-flight. Our method uses solar measurements taken in-flight by the instrument to fit a parameterized ISRF from on ground based calibration, and then retrieves the shape and FWHM of the actual in-flight ISRF. With such a strategy, one would be able to derive and monitor the ISRF during the commissioning and Operation of spectrometer imager missions. We applied our method to retrieve the SCIAMACHY Instrument ISRF in its different channels. We compared the retrieved ones with the on ground estimated ones. Besides some peculiarities found in SCIAMACHY channel 8, the ISRF results in other channels were relatively consistent and stable over time in most cases.

Item URL in elib:https://elib.dlr.de/117825/
Document Type:Article
Title:In-flight Retrieval of SCIAMACHY Instrument Spectral Response Function
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hamidouche, Mouradmourad.hamidouche (at) dlr.deUNSPECIFIED
Lichtenberg, GünterGuenter.Lichtenberg (at) dlr.deUNSPECIFIED
Date:5 March 2018
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/rs10030401
Page Range:pp. 1-18
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:SCIAMACHY; Slit function; ISRF; Remote sensing; Atmosphere; Trace gases; Calibration
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Atmospheric and climate research, Vorhaben Spectroscopic Methods in Remote Sensing (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Hamidouche, Mourad
Deposited On:27 Mar 2018 13:03
Last Modified:14 Dec 2019 04:26

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