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Space Weather Monitoring by GPS Measurements Onboard CHAMP

Jakowski, Norbert and Wilken, Volker and Mayer, Christoph (2007) Space Weather Monitoring by GPS Measurements Onboard CHAMP. Space Weather Journal, 5, pp. 1-13. AGU online. DOI: 10.1029/2006SW000271

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The availability of L-band radio signals permanently transmitted by satellites of the Global Positioning System (GPS) has opened a new dimension for ionosphere sounding. Whereas ground based GPS measurement techniques have been developed already over many years, the space based GPS measurements onboard Low Earth Orbiting (LEO) satellites are rather new. GPS measurements onboard the German geo-research satellite CHAMP were used to monitor the ionosphere on global scale since April 2001. Addressed here are the capabilities of the ionospheric radio occultation (IRO) technique for routinely monitoring the global ionosphere with the purpose of deriving value-added data products and studying ionospheric perturbations. Also discussed is the use of zenith viewing GPS navigation data for reconstructing the 3D electron density distribution of the topside ionosphere/plasmasphere in the vicinity of the CHAMP orbit plane. Whereas the ground based measurements show strong horizontal redistribution of plasma during ionospheric storms, the space borne measurements indicate a severe vertical redistribution of the ionospheric plasma during the selected events. In this paper we review the capabilities of the space based GPS measurements performed onboard CHAMP and discuss ionospheric/plasmaspheric perturbation processes caused by the strong space weather event on 20 November 2003. Space based GPS measurements have a high potential for routinely monitoring the ionosphere/plasmasphere systems, thus effectively contributing to global space weather monitoring activities.

Item URL in elib:https://elib.dlr.de/47793/
Document Type:Article
Title:Space Weather Monitoring by GPS Measurements Onboard CHAMP
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:September 2007
Journal or Publication Title:Space Weather Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1029/2006SW000271
Page Range:pp. 1-13
Lanzerotti, Louis J.UNSPECIFIED
Publisher:AGU online
Keywords:Space weather, GPS, Ionosphere, Plasmasphere, Radio Occultation, CHAMP
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: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Jakowski, Dr.rer.nat. Norbert
Deposited On:10 Jan 2008
Last Modified:27 Apr 2009 13:37

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