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Adaption of an algorithm based on the two-dimensional Fast-Fourier-Transform (FFT) for the Analysis of OH-airglow intensity measurements

Kazlova, Alexandra (2015) Adaption of an algorithm based on the two-dimensional Fast-Fourier-Transform (FFT) for the Analysis of OH-airglow intensity measurements. Master's, Technische Universität München.

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Abstract

Recent observational and theoretical studies of the properties of small-scaled gravity waves have highlighted the global effects on the circulation from the surface to the middle atmosphere. Airglow imaging allows to study small-scaled gravity waves in the mesopause (ca. ~87 km height). A new camera system is installed at DLR Oberpfaffenhofen with a narrow field of view and with the ability to take an image every 0.5 seconds which is quite new in the field of airglow imaging systems. The study is based on observations of 2014 year. In this thesis an algorithm to analyze small-scaled gravity wave structures from the provided images of the airglow emission is described and adapted. The algorithm involves the two-dimensional Fourier analysis and can handle a large amount of data. It determines the horizontal wavelength and direction of propagation. The results are grouped monthly and compared to literature.

Item URL in elib:https://elib.dlr.de/107936/
Document Type:Thesis (Master's)
Title:Adaption of an algorithm based on the two-dimensional Fast-Fourier-Transform (FFT) for the Analysis of OH-airglow intensity measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kazlova, Alexandrakazlova.aliaksandra (at) gmail.comUNSPECIFIED
Date:October 2015
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:70
Status:Published
Keywords:atmosphere, mesopause, gravity waves, airglow
Institution:Technische Universität München
Department:Ingenieurfakultät Bau Geo Umwelt
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):R - Vorhaben Datenprodukte für Klima- und Atmosphärenanwendungen (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Atmosphere
Deposited By: Wagner, Karla
Deposited On:22 Nov 2016 11:24
Last Modified:31 Jul 2019 20:05

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