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More Accurate and Faster Available CHAMP and GRACE Gravity Fields for the User Community Read chapter Read first chapter

2010 | OriginalPaper | Chapter

Global Atmospheric Data from CHAMP and GRACE-A: Overview and Results

Authors : Jens Wickert, Georg Beyerle, Carsten Falck, Sean B. Healy, Stefan Heise, Wolfgang Köhler, Grzegorz Michalak, Dave Offiler, Detlef Pingel, Markus Ramatschi, Markus Rothacher, Torsten Schmidt

Published in: System Earth via Geodetic-Geophysical Space Techniques

Publisher: Springer Berlin Heidelberg

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Abstract

The German geoscience satellite CHAMP (CHAllenging Minisatellite Payload) provides global atmospheric measurements almost continuously since early 2001. It currently generates a unique and operationally available long-term set of GPS radio occultation (RO) data. RO data from the US-German GRACE-A satellite (Gravity Recovery and Climate Experiment) are in addition operationally available since May 22, 2006. Data and analysis results from both satellites are provided to the international scientific community and stimulated several activities to improve GPS RO data analysis and the application in atmospheric research and for global weather forecasts. The data are currently in use by more than 40 research groups worldwide. A near-real time data provision from CHAMP and GRACE was installed and is demonstrated by GFZ within the GEOTECHNOLOGIEN research project NRT-RO (Near-Real-Time Radio Occultation) funded by the German Federal Ministry of Education and Research (BMBF). An average delay between measurement aboard the satellites and provision of corresponding analysis results below 2 h is operationally reached. This successful research activity was one of the preconditions for the beginning of the operational GPS RO data use to improve global weather forecasts in 2006 by Met Office and ECMWF (European Centre for Medium-Range Weather Forecasts). This result is a milestone and a breakthrough for the acceptance of the innovative GPS RO data in Numerical Weather Prediction (NWP).

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previous chapter Near-Real-Time Provision and Usage of Global Atmospheric Data from CHAMP and GRACE (NRT-RO): Motivation and Introduction
next chapter Near-Real Time Satellite Orbit Determination for GPS Radio Occultation with CHAMP and GRACE
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Metadata
Title
Global Atmospheric Data from CHAMP and GRACE-A: Overview and Results
Authors
Jens Wickert
Georg Beyerle
Carsten Falck
Sean B. Healy
Stefan Heise
Wolfgang Köhler
Grzegorz Michalak
Dave Offiler
Detlef Pingel
Markus Ramatschi
Markus Rothacher
Torsten Schmidt
Copyright Year
2010
Publisher
Springer Berlin Heidelberg
Book
System Earth via Geodetic-Geophysical Space Techniques

Print ISBN: 978-3-642-10227-1

Electronic ISBN: 978-3-642-10228-8

Copyright Year: 2010

DOI
https://doi.org/10.1007/978-3-642-10228-8_38

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