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Impact of molecular absorption spectroscopy data on methane retrieval from SCIAMACHY and GOSAT shortwave infrared spectra

Xu, Haoran (2017) Impact of molecular absorption spectroscopy data on methane retrieval from SCIAMACHY and GOSAT shortwave infrared spectra. Master's, Technische Universität München.

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Abstract

Methane is an important species of Earth's atmosphere, highly relevant for climate. Accordingly, a large number of spaceborne sensors are observing this species in the thermal, near and shortwave infrared. For the analysis of shortwave infrared spectra measured by SCIAMACHY aboard the Envisat and the simulated spectra of GOSAT, respectively, in this master thesis the Beer InfraRed Retrieval Algorithm (BIRRA) was used to retrieve methane column densities from the radiance with respect to different sets of observations. Our investigations are based on the separate comparisons of retrieved fitting parameters with respect to the different molecular absorption spectroscopic databases in order to account for their impact on the retrieval quality. After the analysis, it can be concluded that HITRAN 2012 and GEISA 2015 have a comparable performance with good retrieval quality, HITRAN 1986 achieves the worst quality. Moreover, several useful suggestions are provided for the further improvement on retrieval according to the study.

Item URL in elib:https://elib.dlr.de/115356/
Document Type:Thesis (Master's)
Title:Impact of molecular absorption spectroscopy data on methane retrieval from SCIAMACHY and GOSAT shortwave infrared spectra
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Xu, HaoranHaoran.Xu (at) dlr.deUNSPECIFIED
Date:July 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:88
Status:Published
Keywords:Atmosphere; Remote Sensing; Shortwave Infrared, Retrieval, Molecular Spectroscopy
Institution:Technische Universität München
Department:Fakultät für Elektrotechnik und Informationstechnik
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: Schreier, Dr.rer.nat. Franz
Deposited On:17 Nov 2017 14:36
Last Modified:31 Jul 2019 20:12

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