Operational NWP assimilation of GPS radio occultation data
نویسندگان
چکیده
منابع مشابه
Assimilation of GPS Radio Occultation Data for Numerical Weather Prediction
With the availability of approximately 4,000 radio occultation soundings per day within three hours of observation, COSMIC has the potential to contribute significantly to global and regional weather analysis and prediction. However, the basic radio occultation measurements (phase delays) are very different from traditional meteorological measurements (i.e., temperature, water vapor), and to ef...
متن کاملBackpropagation Processing of GPS Radio Occultation Data
We provide an assessment of the backpropagation (BP) method for processing GPS radio occultations using simulations as well as recent data from CHAMP and SAC-C. It is found that BP gives improved retrievals over the standard Doppler technique, even when multipath ambiguities are not completely removed. In addition, by being an amplitude-weighted algorithm, BP is robust in the presence of receiv...
متن کاملGPS radio occultation with CHAMP
GPS radio occultation with CHAMP: monitoring of climate change parameters T. Schmidt, S. Heise, J. Wickert, G. Beyerle, and C. Reigber GeoForschungsZentrum Potsdam, Department 1: Geodesy and Remote Sensing, Potsdam, Germany Received: 20 September 2004 – Accepted: 27 October 2004 – Published: 1 December 2004 Correspondence to: T. Schmidt ([email protected]) © 2004 Author(s). This work is l...
متن کاملPotential Impact of COSMIC GPS Radio Occultation Data on Regional
A major challenge for operational numerical weather prediction over the Antarctic and Southern Ocean is the lack of traditional meteorological observations. This increases uncertainty in the model initial condition and results in inferior forecast skills as compared with numerical weather prediction in mid-latitudes over the Northern Hemisphere. With the lack of traditional observations over th...
متن کاملThe Assimilation of Radio Occultation Measurements
GPS radio occultation (RO) measurements are a potentially important new source of profile information that can be used in numerical weather prediction (NWP). This paper outlines the options for assimilating the RO measurements into an operational NWP system. The importance of realistic estimates for the observation error estimates is discussed.
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ژورنال
عنوان ژورنال: Atmospheric Science Letters
سال: 2008
ISSN: 1530-261X,1530-261X
DOI: 10.1002/asl.173