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Enhanced E-layer ionization in the auroral zones observed by radio occultation measurements onboard CHAMP and Formosat-3/COSMIC

Mayer, Christoph and Jakowski, Norbert (2009) Enhanced E-layer ionization in the auroral zones observed by radio occultation measurements onboard CHAMP and Formosat-3/COSMIC. Annales Geophysicae, 27 (3), pp. 1207-1212. Copernicus Publications.

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Official URL: http://www.ann-geophys.net/27/1207/2009/

Abstract

Particle precipitation of magnetospheric origin causes additional ionization in the auroral zone at E-layer heights. During night-time, in particular at winter-night, the E-layer ionization may dominate over the F2-layer ionization level. To study the geophysical conditions and characteristics of the related ionospheric processes in more detail, we use GPS radio occultation electron density profile retrievals from CHAMP and Formosat-3/COSMIC to extract those vertical profiles which show the absolute maximum of ionization in the E-layer height range of 90�150 km. In order to select these profiles, we have developed an algorithm which can recognize the shape of a given profile by fitting an empirical Ansatz to it. Using data from CHAMP collected since 2002 and Formosat-3/COSMIC data starting from 2006, we are able to study both, the local-time dependence and the solar-cylce variability of the observed processes.

Item URL in elib:https://elib.dlr.de/58525/
Document Type:Article
Title:Enhanced E-layer ionization in the auroral zones observed by radio occultation measurements onboard CHAMP and Formosat-3/COSMIC
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mayer, ChristophUNSPECIFIEDUNSPECIFIED
Jakowski, NorbertUNSPECIFIEDUNSPECIFIED
Date:2009
Journal or Publication Title:Annales Geophysicae
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:27
Page Range:pp. 1207-1212
Publisher:Copernicus Publications
Status:Published
Keywords:GNSS, CHAMP, COSMIC, E-Layer, Polar ionosphere, Instruments and techniques, Ionospheric physics
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Ionosphärenerkundung (old)
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Mayer, Dr. Christoph
Deposited On:30 Mar 2009
Last Modified:08 Mar 2018 18:47

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