Reprocessing and Application of GPS Radio Occultation Data from CHAMP and GRACE

  • Stefan Heise
  • Jens Wickert
  • Christina Arras
  • Georg Beyerle
  • Antonia Faber
  • Grzegorz Michalak
  • Torsten Schmidt
  • Florian Zus
Chapter
Part of the Advanced Technologies in Earth Sciences book series (ATES)

Abstract

In recent years, the GPS radio occultation (RO) technique has become an established approach for global atmospheric remote sensing. For instance, GPS RO data are operationally used in numerical weather prediction since 2006. At the beginning of the GEOTECHNOLOGIEN research project ATMO-CHAMP/GRACE, the German CHAMP (CHAllenging Minisatellite Payload) satellite provided the first and only long-term GPS RO data set, comprising nearly eight years. Around 440,000 occultation measurements were performed between Feb. 2001 and Oct. 2008. This data set is complemented and continued by GPS RO measurements aboard the GRACE-A (Gravity Recovery And Climate Experiment) satellite. To generate a homogeneous and high quality long-term set of CHAMP/GRACE GPS-RO data for climatological applications and trend analyses, a consistent reprocessing was needed. Major results of the ATMO-CHAMP/GRACE project are: (a) significant improvement of the GPS RO analysis software at GFZ, including capability of open-loop processing (TerraSAR-X, TanDEM-X); (b) consistently reprocessed GPS RO data set from CHAMP and GRACE applying the improved analysis software; (c) based on the reprocessed long-term data set: temperature trends in the Upper Troposphere Lower Stratosphere region (UTLS), results on variability and trend behavior of tropopause parameters, results on gravity wave activity and occurrence of sporadic E-layers.

Keywords

Global Navigation Satellite System Radio Occultation Radio Occultation Data Gravity Wave Activity Radio Occultation Observation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Stefan Heise
    • 1
  • Jens Wickert
    • 1
  • Christina Arras
    • 1
  • Georg Beyerle
    • 1
  • Antonia Faber
    • 1
  • Grzegorz Michalak
    • 1
  • Torsten Schmidt
    • 1
  • Florian Zus
    • 1
  1. 1.GFZ German Research Centre for Geosciences, Department 1, Geodesy and Remote SensingTelegrafenbergPotsdamGermany

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