Retrieving temperature, water vapour and surface pressure information from refractive‐index profiles derived by radio occultation: A simulation study

By S. B. Healy, John Eyre, UK The Met. Oflce. 2000

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The Radio Occultation Experiment aboard CHAMP: Operational Data Analysis and Validation of Vertical Atmospheric Profiles (2004, methodology): “The measured refractivity profile is combined with a priori data (derived from ECMWF analyses) taking into account the error characteristics in a “statistic optimal” way (Healy and Eyre, 2000).”
The COSMIC/FORMOSAT-3 Mission: Early Results (2008, methodology): “Healy and Eyre (2000) and Palmer et al. (2000) provided overviews of the 1DVAR method and some specific issues pertinent to GPS RO.”
Forecast impact experiment with GPS radio occultation measurements (2005, methodology): “In addition, the entire measurement profile is rejected if the 1D-Var cost function value is 10 times greater than the expected value [ Healy and Eyre, 2000 ].”
Exploring earth's atmosphere with radio occultation: contributions to weather, climate and space weather (2011, unknown): “One-dimensional, variational techniques have also been used to obtain optimal estimates of temperature and water vapor from observed refractivity (e.g. Healy and Eyre, 2000).”
The GPS radio occulation technique (2000, background): “While Kursinski et al. (1997) show that the Abel trans form will generally be quite accurate as an initial retrieval scheme for GPS occultations of the Earth's atmosphere, improved accuracy can be accomplished by incorporating knowledge of local horizontal structure into the profile retrieval proce”