Articles, Papers and Reports

Articles and papers

2011

• U. Foelsche, S. Syndergaard, J. Fritzer, and G. Kirchengast, Errors in GNSS radio occultation data: relevance of the measurement geometry and obliquity of profiles, Atmos. Meas. Tech., 4, 189-199, doi: 10.5194/amt-4-189-2011, 2011.
• M. E. Gorbunov, Lauritsen, K. B., Benzon, H.-H., Larsen, G. B., Syndergaard, S., and Sørensen, M. B., Processing of GRAS/METOP radio occultation data recorded in closed-loop and raw-sampling modes, Atmos. Meas. Tech., 4, 1021-1026, doi: 10.5194/amt-4-1021-2011, 2011.
• M. E. Gorbunov, V. Shmakov, S. S. Leroy, and K. B. Lauritsen, COSMIC Radio Occultation Processing: Cross-Center Comparison and Validation, J. Atmos. Oceanic Technol., 28, 737-751, doi: 10.1175/2011JTECHA1489.1, 2011.
• S. B. Healy, Refractivity coefficients used in the assimilation of GPS radio occultation measurements, Journal of Geophysical Research, Vol. 116, D01106, doi: 10.1029/2010JD014013, 2011.
• K. B. Lauritsen, S. Syndergaard, H. Gleisner, M. E. Gorbunov, F. Rubek, M. B. Sørensen, and H. Wilhelmsen, Processing and validation of refractivity from GRAS radio occultation data, Atmos. Meas. Tech., 4, 2065-2071, doi: 10.5194/amt-4-2065-2011, 2011.

2010

• M. E. Gorbunov, K. B. Lauritsen, and S. S. Leroy, Application of Wigner distribution function for analysis of radio occultations, Radio Sci., 45, RS6011, doi: 10.1029/2010RS004388, 2010.
• P. Poli, S. B. Healy, and D. P. Dee, Assimilation of Global Positioning System radio occultation data in the ECMWF ERAInterim reanalysis, Q. J. R. Meteorol. Soc. 136: 19721990. doi: 10.1002/qj.722, 2010.
• M. P. Rennie, The impact of GPS radio occultation assimilation at the Met Office, Quarterly Journal of the Royal Meteorological Society, Vol. 136, No. 646, pp. 116-131. doi: 10.1002/qj.521, 2010.
• F. Xie, D. L. Wu, C. O. Ao, E. R. Kursinski, A. J. Mannucci, and S. Syndergaard, Super-refraction effects on GPS radio occultation refractivity in marine boundary layers, GEOPHYSICAL RESEARCH LETTERS, VOL. 37, L11805, doi: 10.1029/2010GL043299, 2010.

2009

• A. von Engeln,, S. Healy, C. Marquardt, Y. Andres, and F. Sancho, Validation of Operational GRAS Radio Occultation Data, Geophys. Res. Lett., vol. 36, L17809, doi: 10.1029/2009GL039968, 2009.
• M. E. Gorbunov and K. B. Lauritsen, Error Estimate of Bending Angles in the Presence of Strong Horizontal Gradients , pp. 17-26, in: "New Horizons in Occultation Research: Studies in Atmosphere and Climate", Steiner, A.; Pirscher, B.; Foelsche, U.; Kirchengast, G. (Eds.), Springer 2009.
• H. W. Lewis, A Robust Method for Tropopause Altitude Identification Using GPS Radio Occultation Data, Geophys. Res. Lett., vol. 36, L12808, doi: 10.1029/2009GL039231, 2009.
• A. Löscher, K. B. Lauritsen, and M. Sørensen, The GRAS SAF Radio Occultation Processing Intercomparison Project ROPIC , pp.47-60, in: "New Horizons in Occultation Research: Studies in Atmosphere and Climate", Steiner, A.; Pirscher, B.; Foelsche, U.; Kirchengast, G. (Eds.), Springer 2009.

2008

• A. Löscher, C. Retscher, L. Fusco, P. Goncalves, F. Brito, G. Kirchengast, Variational optimization for global climate analysis on ESA's high performance computing grid, Remote Sensing of Environment 112 (2008) 1450-1463, 2008.
• M. A. Ringer and S. B. Healy, Monitoring twenty-first century climate using GPS radio occultation bending angles, Geophys. Res. Lett., 35, L05708, doi: 10.1029/2007GL032462, 2008.

2007

• M. E. Gorbunov and K. B. Lauritsen, Linearized Zverev Transform and its application for modeling radio occultations , Radio Science, Vol. 42, RS3023 (9pp), doi: 10.1029/2006RS003590, 2007
• S. B. Healy, J. R. Eyre, M. Hamrud and J.-N. Thépaut, Assimilating GPS radio occultation measurements with two-dimensional bending angle observation operators Q. J. R. Meteorol. Soc., 133, pp. 1213-1227, doi: 10.1002/qj.63, 2007

2006

• G. Beyerle, T. Schmidt, J. Wickert, S. Heise, M. Rothacher, G. Konig-Langlo, and K. B. Lauritsen, Observations and simulations of receiver-induced refractivity biases in GPS radio occultation, JGR, vol 111, D12101, doi: 10.1029/2005JD006673, 2006.
• M. E. Gorbunov, K. B. Lauritsen, A. Rhodin, M. Tomassini, and L. Kornblueh, Radio holographic filtering and error estimation of radio occultation data, JGR, vol 111, D10105, doi: 10.1029/2005JD006427, 2006.
• M. E. Gorbunov and K. B. Lauritsen, Asymptotic wave optics methods in inversion and direct modeling of radio occultations: recent achievements, pp.81-94 in: 'Atmosphere and Climate: Studies by Occultation Methods', U. Foelsche, G. Kirchengast, A. Steiner, eds., Springer Verlag, 2006
• M. E. Gorbunov and K. B. Lauritsen, Radio holographic filtering of noisy radio occultations, pp.127-134 in: 'Atmosphere and Climate: Studies by Occultation Methods', U. Foelsche, G. Kirchengast, A. Steiner, eds., Springer Verlag, 2006
• J. Schulz, R. Lindau, N. Selbach, K. B. Lauritsen, H. Gleisner, Comparison of ATOVS, CHAMP and ground based humidity estimates on different spatiotemporal scales, Proceedings of the 15th International TOVS Study Conference (ITSC 15), October 2006

2005

• M. E. Gorbunov and K. B. Lauritsen, Canonical Transform Methods for Analysis of Radio Occultations in: 'Earth Observation with CHAMP: Results from Three Years in Orbit', pp.519-524, eds. C. Reigber, H. Luehr, P. Schwintzer, and J. Wickert, Springer Verlag, Berlin, 2005
• M. E. Gorbunov et al, Analysis of the CHAMP Experimental Data on Radio-Occultation Sounding of the Earth's Atmosphere (translated from Russian), Izvestiya, Atmospheric and Oceanic Physics, vol 41, no. 6, pp, 726-740, 2005.
• Larsen, G.B., S. Syndergaard, P. Høeg, and M.B. Sørensen, Single frequency processing of Ørsted GPS radio occultation measurements, GPS Solut (2005) 9: 144-155, doi: 10.1007/s10291-005-0142-x, Springer Verlag 2005.
• S. B. Healy, A. M. Jupp, and C. Marquardt, Forecast impact experiment with GPS radio occultation measurements, Geophys. Res. Lett., 32, L03804, doi: 10.1029/2004GL020806, 2005.
• S. B. Healy and J.-N. Thépaut, Assimilation experiments with CHAMP GPS radio occultation measurements, Q. J. R. Meteorol. Soc., 132, pp. 605-623, 2006

2001 - 2004

• S. Healy, Smoothing radio occultation bending angles above 40 km, Annales Geophysicae 19, pp. 459-468, 2001
• A. D. Collard, S. Healy, The combined impact of future space-based atmospheric sounding instruments on numerical wheather prediction, Q. J. R. Meteorol. Soc. 129, pp. 2741-2760, 2003
• M. E. Gorbunov and K. B. Lauritsen, Analysis of wave fields by Fourier integral operators and their application for radio occultations, Radio Science, Vol. 39(4), RS4010, doi: 10.1029/2003RS002971 (15pp), 2004

Reports

2008

• M. Rennie, Report on the Assimilation of GPS Radio Occultation data into the Met Office global model
  Met Office Forecasting Research Technical Report No. 510, Exeter, UK, 2008

2005

• M. E. Gorbunov and K. B. Lauritsen, Radio holographic filtering of noisy radio occultations
  DMI Scientific Report 05-06, DMI, Copenhagen, 2005
• M. E. Gorbunov, Operational Processing of CH AMP Data: Mathematical Methods, Data Filtering and Quality Control
  DMI Scientific Report 05-07, DMI, Copenhage n, 2005
• S. de Haan, Global Maps from GPS Radio Occul tation Data
  DMI Scientific Report 05-08, DMI, Copenhagen, 2005
• G. Beyerle, Simulating GPS Radio Occultation Events
  DMI Technical Report 05-09, DMI, Copenhagen, 2005
• K. B. Lauritsen and F. Rubek, editors, 'GRAS SAF Open Loop Workshop', (see GOLW 2005)
  DMI Technical Report 05-11, DMI, Copenhagen, 2005

2001 - 2004

• M. E. Gorbunov, Radioholographic methods for processing radio occultation data in multipath regions
  DMI Scientific Report No. 01-02, DMI, Copenhagen, 2001
• M. E. Gorbunov, K. B. Lauritsen, Canonical Transform Methods for Radio Occultation Data
  DMI Scientific Report No. 02-10, DMI, Copenhagen, 2002
• K. B. Lauritsen, M. S. Lohmann, Unfolding of Radio Occultation Multipath Behavior Using Phase Models
  DMI Scientific Report No. 02-11, DMI, Copenhagen, 2002
• A. K. Steiner, Error Analyses of Refractivity Profiles Retrieved from CHAMP Radio Occultation Data
  DMI Scientific Report 04-02, Copenhagen, 2004
• J. Wickert, Comparison of Vertical Refractivity and Temperature Profiles From CHAMP With Radiosonde Measurements
  DMI Scientific Report 04-09, DMI, Copenhagen, 2004