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Ionospheric Radio Occultation Measurements Onboard CHAMP

Jakowski, N. and Tsybulya, K. and Stankov, S.M. and Wilken, V. and Heise, S. and Wehrenpfennig, A. (2004) Ionospheric Radio Occultation Measurements Onboard CHAMP. In: Proceedings BSS04. Beacon Satellite Symposium 2004, ICTP Trieste, Italy, October 18-22, 2004, Trieste, Italy.

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Abstract

The GPS radio occultation measurements of the ionosphere have been performed onboard CHAMP since 11 April 2001. More than 115000 vertical electron density profiles have been derived so far by a model assisted retrieval technique. The talk addresses 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. Discussed are the model assisted retrieval technique, operational data processing and results from the validation of vertical electron density profiles. These profiles may not only be used to validate other models, but they also provide a good data basis for developing new models of key ionospheric parameters such as the critical frequency, density peak height, and plasma scale height. Such models would help us to improve retrieval procedures and tomographic reconstruction techniques. Travelling ionospheric irregularities (TIDs) and other types of ionospheric irregularities may be studied on the basis of CHAMP radio occultation measurements. Shown are the latitudinal distribution and the diurnal and seasonal dynamics of the irregularities. The most prominent feature is the significant enhancement of winter time TID activities over the polar regions. Thanks to the operational data processing capabilities, the data products may also contribute to the space weather monitoring of the ionosphere.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2004,
Title:Ionospheric Radio Occultation Measurements Onboard CHAMP
Authors:
AuthorsInstitution or Email of Authors
Jakowski, N.UNSPECIFIED
Tsybulya, K.UNSPECIFIED
Stankov, S.M.UNSPECIFIED
Wilken, V.UNSPECIFIED
Heise, S.GeoForschungszentrum Potsdam
Wehrenpfennig, A.Fachhochschule Neubrandenburg
Date:2004
Journal or Publication Title:Proceedings BSS04
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:CHAMP, Ionosphere, Radio Occultation
Event Title:Beacon Satellite Symposium 2004, ICTP Trieste, Italy, October 18-22, 2004
Event Location:Trieste, Italy
Event Type:international Conference
Organizer:ICTP Triest
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignement
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 21:34

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