Conference-type papers

2010

• The full-spectrum correlated k method for longwave atmospheric radiative transfer: treatment of gaseous overlap
  Hogan, R. J., Proc. 13th AMS Conf. on Atmospheric Radiation, Portland, Oregon, 28 June - 2 July 2010: PDF

2009

• How well do high resolution models represent tropical covection?
  Pearson, K. J., R. P. Allan, R. J. Hogan and G. Lister, Proc. EUMETSAT Conf., Bath, 21-25 Sept 2009: PDF

2008

• Investigating the radiative impact of clouds using retrieved properties to classify cloud type
  Chalmers, N., R. J. Hogan and R. P. Allan, Proc. International Radiation Symposium (IRS 2008), Foz do Iguassu, Brazil, 4-8 Aug 2008: PDF
• Radiation parametrization and clouds
  Hogan, R. J., and J. K. P. Shonk. Proc. ECMWF Seminar on parametrization of subgrid physical processes, 1-4 Sept 2008: PDF
• Use of a lidar forward model for global comparisons of cloud fraction between the ICESat lidar and the ECMWF model
  Wilkinson, J. M., R. J. Hogan and A. J. Illingworth. ECMWF Technical Memorandum No. 555, 23 pp.: PDF

2007

• A variational scheme for retrieving rainfall rate and hail reflectivity fraction from polarization radar
  Hogan, R. J., Proc 33rd AMS Conf. on Radar Meteorology, Cairns, Queensland: PDF
• Accounting for multiple scattering in spaceborne radar and lidar observations
  Hogan, R. J., and A. Battaglia, Proc 33rd AMS Conf. on Radar Meteorology, Cairns, Queensland: PDF

2006

• Cloudnet: Evaluation of model clouds using ground-based observations
  Hogan, R. J., A. J. Illingworth, E. J. O'Connor, D. Bouniol, M. E. Brooks, J. Delanoe, D. P. Donovan, J. D. Eastment, N. Gaussiat, J. W. F. Goddard, M. Haeffelin, H. Klein Baltink, O. A. Krasnov, J. Pelon, J.-M. Piriou, A. Protat, H. W. J. Russchenberg, A. Seifert, A. M. Tompkins, G.-J. van Zadelhoff, F. Vinit, C. D. Westbrook, U. Willen, D. R. Wilson and C. L. Wrench. Contribution to ECMWF Workshop proceedings: DOC

2004

• A 3D stochastic cloud model for investigating the radiative properties of inhomogeneous cirrus clouds
  Hogan, R. J., and S. F. Kew, Proc. 14th Int. Conf. on Clouds and Precipitation, Bologna, Italy, 1669-1672: PDF (see the poster as PPT)
• Cloud water content and cloud particle characteristics revealed by dual wavelength cloud radar observations
  Gaussiat, N., R. J. Hogan and A. J. Illingworth, Proc. 14th Int. Conf. on Clouds and Precipitation, Bologna, Italy, 524-527.
• Characteristics of drizzle and non-drizzling stratocumulus as revealed by vertically pointing cloud radar and lidar
  O'Connor, E. J., R. J. Hogan, A. J. Illingworth and J.-L. Brenguier, Proc. 14th Int. Conf. on Clouds and Precipitation, Bologna, Italy, 612-615.
• A long term comparison of cloud properties observed by vertically pointing radar and lidar with their representation in operational NWP models.
  Brooks, M. E., R. J. Hogan and A. J. Illingworth, Proc. 14th Int. Conf. on Clouds and Precipitation, Bologna, Italy, 1293-1294.
• Deriving turbulent kinetic energy dissipation rate within clouds using ground based radar
  Bouniol, D., A. J. Illingworth and R. J. Hogan, Proc 3rd European Conf. on Radar Meteorol and Hydrol., 281-285.

2003

• Deriving turbulent kinetic energy dissipation rate within clouds using ground based 94 GHz radar
  Bouniol, D., A. J. Illingworth and R. J. Hogan, Proc. 31st AMS Conf. on Radar Meteorology, Seattle, 192-196. PS.GZ|PDF

2002

• Clouds: do they obscure the forecast?
  Illingworth, A. J., and R. J. Hogan. Planet Earth, UK Natural Env. Res. Council, Summer 2002, 12-13.
• Use of cloud radar and lidar data for validating clouds in operational forecasting models
  Illingworth, A. J., R. J. Hogan, M. E. Brooks and E. J. O'Connor, EarthCARE Workshop, jointly held with 2nd International Workshop on Spaceborne Cloud Profiling Radar/Lidar, Tokyo 17-18 July 2002.

2001

• Comparison of ECMWF winter-season cloud fraction with radar derived values
  Hogan, R. J., C. Jakob and A. J. Illingworth, ECMWF Technical Memorandum No. 333, 20pp.

2000

• Characteristics of mixed-phase clouds from radar and lidar observations
  Hogan, R. J., A. J. Illingworth and P. R. Field, Proc. 13th Int. Conf. on Clouds and Precipitation, Reno, Nevada, 705-708.
• Validation of cloud fraction and overlap using radar and lidar observations
  Hogan, R. J., A. J. Illingworth and C. Jakob, ECMWF/EuroTRMM Workshop on assimilation of clouds and precipitation, ECMWF, Nov 2000, 235-255.

1999

• Cloud characteristics from dual-wavelength millimetre-wave radar
  Hogan, R. J., A. J. Illingworth and H. Sauvageot, Proc. 29th AMS Conf. on Radar Meteorology, Montreal, Canada, 457-459.
• Comparison of ECMWF cloud cover with radar derived values
  Hogan, R. J., C. Jakob and A. J. Illingworth, Proc. 29th AMS Conf. on Radar Meteorology, Montreal, Canada, 460-462.
• In CLARE'98 Cloud Lidar & Radar Experiment, ESTEC International Workshop Proceedings WPP-170, Noordwijk, The Netherlands, 13-14 September 1999, 239pp.
  • Overview of the flights and datasets
    Illingworth, A. J., and R. J. Hogan, 17-24.
  • Calibration of the ground-based radars used in CLARE'98
    Hogan, R. J., and J. W. F. Goddard, 63-68. RJH_RadarCalibration.ps.gz
  • Analysis of radar and lidar returns from clouds: Implications for the proposed Earth Radiation Mission
    Hogan, R. J., and A. J. Illingworth, 75-82. RJH_RadarLidarAnalysis.ps.gz
  • Stratocumulus liquid water content from dual-wavelength radar
    Hogan, R. J., A. J. Illingworth, J. W. F. Goddard, S. C. H. M. Jongen and H. Sauvageot, 107-110. RJH_StratocumulusLWC.ps.gz
  • Estimation of cloud microphysical parameters from radar, lidar and microwave radiometer during CLARE'98
    Erkelens, J. S., S. C. H. M. Jongen, H. W. J. Russchenberg, M. Herben, P. N. Francis and M. Quante, 129-136.
  • Cloud effective radius and water contents inferred from combined lidar and radar observations during CLARE'98
    Donovan, D. P., A. C. A. P. van Lammeren, J. W. F. Goddard, H. Sauvageot and R. J. Hogan, 147-152.
  • A climatology of supercooled layer clouds from lidar ceilometer data
    Hogan, R. J., and A. J. Illingworth, 161-166. RJH_LayerClimatology.ps.gz|RJH_LayerClimatology.pdf
  • Polarimetric radar observations of the growth of highly aligned ice crystals in the presence of supercooled water
    Hogan, R. J., A. J. Illingworth and P. R. Field, 167-172. RJH_HighZdr.ps.gz|RJH_HighZdr.pdf
  • Comparison of lidar/radar ice cloud parameter retrievals with in-situ measurements
    Donovan, D. P., A. C. A. P. van Lammeren, R. J. Hogan, A. J. Illingworth, P. N. Francis, J. Testud, J. Pelon, M. Quante and J. W. F. Goddard, 173-177.
  • Implications for the split mission scenario
    Hogan, R. J., and A. J. Illingworth, 215-216. RJH_SplitMission.ps.gz
  • Comparison of ECMWF cloud cover with radar derived values
    Hogan, R. J., C. Jakob and A. J. Illingworth, 217-221. RJH_CloudCoverComparison.ps.gz

1997

• Dual-wavelength determination of cirrus microphysical properties
  Hogan, R. J., A. J. Illingworth and H. Sauvageot, Proc. 28th AMS Conf. on Radar Meteorology, Austin, Texas, 364-365.