Articles | Volume 11, issue 1
Research article
10 Jan 2018
Research article |  | 10 Jan 2018

Wave-optics uncertainty propagation and regression-based bias model in GNSS radio occultation bending angle retrievals

Michael E. Gorbunov and Gottfried Kirchengast

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Cited articles

Ao, C.: Effect of ducting on radio occultation measurements: An assessment based on high-resolution radiosonde soundings, Radio Sci., 42, RS2008,, 2007. a
Gorbunov, M.: Wave Optics Propagator Package: Description and User Guide, Technical report for contract eum/co/10/460000812/cja order 4500005632, EUMETSAT, Darmstadt, 2011. a, b, c
Gorbunov, M.: Statistical analysis of systematic errors in RO measurements, ROM SAF Visiting Scientist Report 20, Danish Meteorological Institute, Copenhagen, available at: (last access: 20 December 2017), (SAF/ROM/DMI/REP/VS20/001), 2014. a, b, c, d
Gorbunov, M.: Development of wave optics code for the retrieval of bending angle profiles for reflected rays, ROM SAF CDOP-2, Visiting Scientist Report 27, Danish Meteorological Institute, European Centre for Medium-Range Weather Forecasts, Institut d'Estudis Espacials de Catalunya, Met Office, available at: (last access: 20 December 2017), (SAF/ROM/DMI/REP/VS27/001), 2016. a, b, c
Gorbunov, M. E.: Canonical transform method for processing radio occultation data in the lower troposphere, Radio Sci., 37, 9-1–9-10,, 2002. a
Short summary
We study the systematic discreapancies between atmospheric refractivity derived from radio occulation (RO) sounding of the Earth's atmosphere and the reanalyses of the European Centre for Medium-Range Weather Forecasts. We construct a regression-based bias model. The model can be used for the RO data propagation in the new reference occultation processing system (rOPS) including the uncertainty propagation through the retrieval chain.