2005 | OriginalPaper | Chapter
Atmospheric Profiling with CHAMP: Status of the Operational Data Analysis, Validation of the Recent Data Products and Future Prospects
Authors : Jens Wickert, Torsten Schmidt, Georg Beyerle, Grzegorz Michalak, Rolf König, Julia Kaschenz, Christoph Reigber
Published in: Earth Observation with CHAMP
Publisher: Springer Berlin Heidelberg
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Atmospheric sounding with the German CHAMP (CHAllenging Minisatellite Payload) satellite is successfully performed since February 2001. In total ∼145,000 precise globally distributed vertical profiles of refractivity, temperature and water vapor were provided as of April 2004. The operational occultation infrastructure from GFZ allows for the demonstration of Near-Real Time (NRT) data analysis since February 2003. An average delay of ∼5 hours between each measurement and provision of corresponding analysis results is continuously reached. A comparison with more than 10,000 radiosonde measurements shows nearly biasfree refractivity and temperature between ∼7 and ∼30 km. The standard deviation is ∼1 % and ∼2 K, respectively. Data of the SAC-C (Satelite de Aplicaciones Cientificas-C) occultation mission are used to prepare for multi-satellite capability of the operational data analysis system. Future prospects of the provision of occultation analysis results at GFZ are given.