Chapter

Earth Observation with CHAMP

pp 447-452

Validation of GPS Ionospheric Radio Occultation results onboard CHAMP by Vertical Sounding Observations in Europe

  • Norbert JakowskiAffiliated withDeutsches Zentrum für Luft- und Raumfahrt (DLR) / Institut für Kommunikation und Navigation
  • , Konstantin TsybulyalAffiliated withDeutsches Zentrum für Luft- und Raumfahrt (DLR) / Institut für Kommunikation und Navigation
  • , Jens MielichAffiliated withInstitute of Atmospheric Physics, University of Rostock
  • , Anna BelehakiAffiliated withInstitute for Space Applications and Remote Sensing, National Observatory of Athens
  • , David AltadillAffiliated withObservatori de l'Ebre
  • , Jean-Claude JodogneAffiliated withRoyal Meteorological Institute
  • , Bruno ZolesiAffiliated withIstituto Nazionale di Geofisica e Vulcanologia

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Summary

Ionospheric radio occultation (IRO) measurements have a big potential for monitoring the ionospheric behavior on global scale for now- and forecasting the ionospheric impact on radio systems. In this article we validate the retrieved vertical electron density profiles (EDPs) derived from IRO measurements onboard CHAMP by using vertical sounding measurements at five European vertical sounding stations — Athens, Dourbes, Juliusruh, Rome and Tortosa. Since first IRO measurement onboard CHAMP in April 2001, more than 70000 electron density profiles have been retrieved by a model assisted technique so far. The comparison of IRO retrieved EDPs with ionosonde profiles obtained from the above mentioned stations will be discussed.

Key words

Ionosphere radio occultation ionosonde electron density validation