Book chapters

• Parallel developments and formal collaborations between European atmospheric profiling observatories and US ARM research programs
  Haeffelin, M., S. Crewell, A. J. Illingworth, G. Pappalardo, H. Russchenberg, M. Chiriaco, K. Ebell, R. J. Hogan and F. Madonna, 2016. Chapter 29 of The Atmospheric Radiation Measurement Program: The First 20 Years, American Meteorological Society Monograph.
• Deterministic forecasts of binary events
  Hogan, R. J., and I. B. Mason, 2011. In Forecast verification: a practitioner's guide in atmospheric science, Eds. I. T. Jolliffe and D. B. Stephenson, 2nd Ed., Wiley. Online at Wiley

Journal articles

2024

• What are the optimum discrete angles to use in infrared radiative transfer calculations?
  Hogan, R. J., Q. J. R. Meteorol. Soc., 150, 318-333, doi:10.1002/qj4598: PDF [GitHub repository]
• An intercomparison of EarthCARE cloud, aerosol, and precipitation retrieval products
  Mason, S. L., H. W. Barker, J. N. S. Cole, N. Docter, D. P. Donovan, R. J. Hogan, A. Hünerbein, P. Kollias, B. Puigdomènech Treserras, Z. Qu, U. Wandinger and G.-J. van Zadelhoff, Atmos. Meas. Tech., 17, 875-898, doi:10.5194/amt-17-875-2024.
• Evaluation of downward and upward solar irradiances simulated by the Integrated Forecasting System of ECMWF using airborne observations above Arctic low-level clouds
  Müller, H., A. Ehrlich, E. Jäkel, J. Röttenbacher, B. Kirbus, M. Schäfer, R. J. Hogan and M. Wendisch, Atmos. Chem. Phys., 24, 4157-4175, doi:10.5194/acp-24-4157-2024
• Twelve times faster yet accurate: A new state-of-the-art in radiation schemes via performance and spectral optimization
  Ukkonen, P., and R. J. Hogan, J. Adv. Modeling Earth Sys., 16, e2023MS003932, doi:10.1029/2023MS003932.

2023

• (144) The classification of atmospheric hydrometeors and aerosols from the EarthCARE radar and lidar: the A-TC, C-TC and AC-TC products
  Irbah, A., J. Delanoë, G.-J. van Zadelhoff, D. P. Donovan, P. Kollias, B. Puigdomenech Treserras, S. Mason, S., R. J. Hogan and A. Tatarevic, Atmos. Meas. Techniques, 16, 2795-2820.
• (143) A unified synergistic retrieval of clouds, aerosols and precipitation from EarthCARE: the ACM-CAP product
  Mason, S. L., R. J. Hogan, A. Bozzo and N. L. Pounder, Atmos. Meas. Techniques, 16, 3486-3486: doi:10.5194/amt-16-3459-2023.
• (142) Quantification of uncertainties of radiative transfer calculation in urban canopy models
  Schoetter, R., C. Caliot, T. Y. Chung, R. J. Hogan and V. Masson, Bound.-Layer Meteorol., 189, 103-138, doi:10.1007/s10546-023-00827-9
• (141) Evaluation of vertically resolved longwave radiation in SPARTACUS-Surface 0.7.3 and the sensitivity to urban surface temperatures
  Stretton, M. A., W. Morrison, R. J. Hogan and S. Grimmond, Geosci. Model Dev., 16, 5931-5947: doi:10.5194/egusphere-2022-1002.
• (140) Implementation of a machine-learned gas optics parameterization in the ECMWF Integrated Forecasting System: RRTMGP-NN 2.0
  Ukkonen, P., and R. J. Hogan, Geosci. Model Dev., 16, 3241-3261.

2022

• (139) A tool for generating fast k-distribution gas-optics models for weather and climate applications.
  Hogan, R. J., and M. Matricardi. J. Adv. Modeling Earth Sys., 14, e2022MS003033. doi:10.1029/2022MS003033.
• (138) Machine learning emulation of 3D cloud radiative effects
  Meyer, D., R. J. Hogan, P. Dueben and S. L. Mason. J. Adv. Modeling Earth Sys., 14, e2021MS002550, doi:10.1029/2021MS002550.
• (137) Machine learning emulation of urban land surface processes
  Meyer, D., C. S. R. Grimmond, P. Dueben, R. J. Hogan, M. van Reeuwijk. J. Adv. Modeling Earth Sys., 14, e2021MS002744, doi:10.1029/2021MS002744.
• (136) A stratospheric prognostic ozone for seamless Earth System Models: performance, impacts and future
  Monge-Sanz, B. M., A. Bozzo, N. Byrne, M. P. Chipperfield, M. Diamantakis, J. Flemming, L. J. Gray, R. J. Hogan, L. Jones, L. Magnusson, I. Polichtchouk, T. G. Shepherd, N. Wedi and A. Weisheimer. Atmos. Chem. Phys., 22, 4277-4302, doi:10.5194/acp-22-4277-2022.
• (135) Evaluation of the SPARTACUS-Urban radiation model for vertically resolved shortwave radiation in urban areas
  Stretton, M. A., W. Morrison, R. J. Hogan and C. S. R. Grimmond. Bound. Layer Meteorol., 184, 301-331, doi:10.5194/egusphere-2022-1002.

2021

• (134) An urban scheme for the ECMWF integrated forecasting system: single-column and global offline application
  McNorton, J. R., G. Arduini, N. Bousserez, A. Agusti-Panareda, G. Balsamo, S. Boussetta, M. Choulga, I. Hadade and R. J. Hogan. J. Adv. Modelling Earth Sys., 13, e2020MS002375, doi:10.1029/2020MS002375.
• (133) Copula-based synthetic data generation for machine learning emulators in weather and climate: application to a simple radiation model
  Meyer, D., T. Nagler and R. J. Hogan. Geosci. Model Dev., 14, 5205-5215, doi:10.5194/gmd-14-5205-2021.
• (132) Evidence for the 3D radiative effects of boundary-layer clouds from observations of direct and diffuse surface solar fluxes.
  Villefranque, N., and R. J. Hogan. Geophys. Res. Lett., 48, e2021GL093369, doi:10.1029/2021GL093369.
• (131) Process-based climate model development harnessing machine learning: 3. The representation of cumulus geometry and their 3D radiative effects.
  Villefranque, N., S. Blanco, F. Couvreux, R. Fournier, J. Gautrais, R. J. Hogan, F. Hourdin, V. Voldina and D. Williamson. J. Adv. Modeling Earth Sys., 13, e2020MS002423. doi:10.1029/2020MS002423.

2020

• (130) Mean radiant temperature from global-scale numerical weather prediction models
  Di Napoli, C., R. J. Hogan and F. Pappenberger. Int. J. Biometeorol., doi:10.1007/s00484-020-01900-5.
• (129) Parameterizing cloud geometry for use in 3D radiative transfer and cloud erosion schemes
  Fielding, M. D., S. A. K. Schäfer, R. J. Hogan and R. M. Forbes. Q. J. R. Meteorol. Soc., doi:10.1002/qj.3758.
• (128) The ERA5 global reanalysis
  Hersbach, H., B. Bell, P. Berrisford, S. Hirahara, A. Horanyi, J. Munoz-Sabater, J. Nicolas, C. Peubey, R. Radu, D. Schepers, A. Simmons, C. Soci, S. Abdalla, X. Abellan, G. Balsamo, P. Bechtold, G. Biavati, J. Bidlot, M. Bonavita, G. De Chiara, P. Dahlgren, D. Dee, M. Diamantakis, R. Dragani, J. Flemming, R. Forbes, M. Fuentes, A. Geer, L. Haimberger, S. Healy, R. J. Hogan, E. Holm, M. Janiskova, S. Keeley, P. Laloyaux, P. Lopez, G. Radnoti, P. de Rosnay, I. Rozum, F. Vamborg, S. Villaume and J.-N. Thepaut. Q. J. R. Meteorol. Soc., 146, 1999-2049.
• (127) Evaluating and improving the treatment of gases in radiation schemes: the Correlated K-Distribution Model Intercomparison Project (CKDMIP)
  Hogan, R. J., and M. Matricardi. Geosci. Model. Dev., 13, 6501-6521. [GMD Website] [CKDMIP Website]
• (126) Accelerating radiation computations for dynamical models with targeted machine learning and code optimization
  Ukkonen, P., R. Pincus, R. J. Hogan, K. P. Nielsen and E. Kaas. J. Adv. Modeling Earth Sys., 12, e2020MS002226. [JAMES Website]
• (125) Evaluation of ECMWF radiation scheme using aircraft observations of spectral irradiance above clouds
  Wolf, K., A. Ehrlich, M. Mech, R. J. Hogan and M. Wendisch. J. Atmos. Sci., 77, 2665-2685.

2019

• (124) A benchmark for testing the accuracy and computational cost of shortwave top-of-atmosphere reflectance calculations in clear-sky aerosol-laden atmospheres
  Escribano, J., A. Bozzo, P. Dubuisson, J. Flemming, R. J. Hogan, L. C.-Labonnote and O. Boucher. Geosci. Model Dev., 12, 805-827.
• (123) An exponential model of urban geometry for use in radiative transfer applications
  Hogan, R. J., Boundary-Layer Meteorol., 170, 357-472: PDF [Journal page]
• (122) Flexible treatment of radiative transfer in complex urban canopies for use in weather and climate models
  Hogan, R. J., Bound.-Layer Meteorol., 173, 53-78: PDF [SPARTACUS Website]
• (121) Entrapment: An important mechanism to explain the shortwave 3D radiative effect of clouds
  Hogan, R. J., M. D. Fielding, H. W. Barker, N. Villefranque and S. A. K. Schäfer. J. Atmos. Sci., 76, 2123-2141: PDF [SPARTACUS Website]
• (120) The importance of particle size distribution shape for triple-frequency radar retrievals of the morphology of snow
  Mason, S. L., R. J. Hogan, C. D. Westbrook. S. Kneifel, D. Moisseev and L. von Terzi, Atmos. Meas. Tech., 12, 4993-5018.
• (119) Treatment of model uncertainty from radiation by the Stochastically Perturbed Parametrization Tendencies (SPPT) scheme and associated revisions in the ECMWF ensembles
  Lock, S.-J., S. T. K. Lang, M. Leutbecher, R. J. Hogan and F. Vitart, Q. J. R. Meteorol. Soc., 145, 75-89.

2018

• (118) Understanding global model systematic shortwave radiation errors in subtropical marine boundary layer cloud regimes
  Ahlgrimm, M., R. M. Forbes, R. J. Hogan and I. Sandu. J. Adv. Modeling Earth Sys., 10, doi:10.1029/2018MS001346.
• (117) The numerics of physical parametrization in the ECMWF model
  Beljaars, A., G. Balsamo, P. Bechtold, A. Bozzo, R. Forbes, R. J. Hogan, M. Koehler, J.-J. Morcrette, A. M. Tompkins, P. Viterbo and N. Wedi. Frontiers Earth Sci., 6(137), 18 pp.
• (116) A flexible and efficient radiation scheme for the ECMWF model
  Hogan, R. J., and A. Bozzo. J. Adv. Modeling Earth Sys., 10, 1990-2008: PDF [ecRad Website]
• (115) Fast treatment of 3D radiative transfer in vegetation canopies: SPARTACUS-Vegetation 1.1
  Hogan, R. J., T. Quaife and R. Braghiere. Geosci. Model Dev., 11, 339-350: PDF [SPARTACUS Website]
• (114) Retrievals of riming and snow particle density from vertically-pointing Doppler radars
  Mason, S. L., J.-C. Chiu, R. J. Hogan, D. Moisseev and S. Kneifel. J. Geophys. Res., 123, doi:10.1029/2018JD028603.
• (113) Sensitivity of the Brewer-Dobson circulation and polar vortex variability to parametrized nonorographic gravity-wave drag in a high-resolution atmospheric model
  Polichtchouk, I., T. G. Shepherd, R. J. Hogan and P. Bechtold. J. Atmos. Sci., 75, 1525-1543.

2017

• (112) Why are mixed-phase altocumulus clouds poorly predicted by large-scale models? Part I: Physical processes
  Barrett, A. I., R. J. Hogan and R. M. Forbes. J. Geophys. Res., 122, 9903-9926: PDF
• (111) Why are mixed-phase altocumulus clouds poorly predicted by large-scale models? Part II: Vertical resolution sensitivity and parameterization
  Barrett, A. I., R. J. Hogan and R. M. Forbes. J. Geophys. Res., 122, 9927-9944: PDF
• (110) Asperitas - a newly identified cloud supplementary feature
  Harrison, R. J., G. Pretor-Pinney, G. J. Marlton, G. D. Anderson, D. J. Kirshbaum and R. J. Hogan. Weather, 72, 132-141.
• (109) Calculating the millimetre-wave scattering phase function of snowflakes using the Self-Similar Rayleigh-Gans Approximation
  Hogan, R. J., R. Honeyager, J. Tyynela and S. Kneifel. Q. J. R. Meteorol. Soc., 143, 834-844: PDF
• (108) Evaluation of the Rayleigh-Gans Approximation for microwave scattering by rimed snowflakes
  Leinonen, J., S. Kneifel and R. J. Hogan. Q. J. R. Meteorol. Soc. doi:10.1002/qj.3093.
• (107) Stochastic representation of model uncertainties at ECMWF: State of the art and future vision
  Leutbecher, L., S.-J. Lock, P. Ollinaho, S. T. K. Lang, G. Balsamo, P. Bechtold, M. Bonavita, H. M. Christiensen, M. Diamantakis, E. Dutra, S. English, M. Fisher, R. M. Forbes, J. Goddard, T. Haiden, R. J. Hogan, S. Juricke, H. Lawrence, D. MacLeod, L. Magnusson, S. Malardel, S. Massart, I. Sandu, P. K. Smolarkiewicz, A. Subramanian, F. Vitart, N. Wedi and A. Weisheimer. Q. J. R. Meteorol. Soc., doi:10.1002/qj.3094.
• (106) Improved rain rate and drop size retrievals from airborne Doppler cloud radar
  Mason, S. L., J. C. Chiu, R. J. Hogan and L. Tian. Atmos. Chem. Phys., 17, 11,567-11,589.
• (105) Towards process-level representation of model uncertainties: Stochastically perturbed parametrisations in the ECMWF ensmble
  Ollinaho, P., S.-J. Lock, M. Leutbecher, P. Bechtold, A. Beljaars, A. Bozzo, R. M. Forbes, T. Haiden, R. J. Hogan and I. Sandu. Q. J. R. Meteorol. Soc., 143, 408-422.

2016

• (104) Effect of solar zenith angle specification in models on mean shortwave fluxes and stratospheric temperatures
  Hogan, R. J., and S. Hirahara. Geophys. Res. Lett., 43, 482-488: PDF
• (103) Representing 3D cloud-radiation effects in two-stream schemes: 2. Matrix formulation and broadband evaluation
  Hogan, R. J., S. A. K. Schäfer, C. Klinger, J.-C. Chiu and B. Mayer. J. Geophys. Res., 121, 8583-8599: PDF
• (102) Representing 3D cloud-radiation effects in two-stream schemes: 1. Longwave considerations and effective cloud edge length
  Schäfer, S. A. K., R. J. Hogan, C. Klinger, J.-C. Chiu and B. Mayer. J. Geophys. Res., 121, 8567-8582: PDF

2015

• (101) Joint retrievals of cloud and drizzle in marine boundary layer clouds using ground-based radar, lidar and zenith radiances
  Fielding, M. D., J.-C. Chiu, R. J. Hogan, G. Feingold, E. Eloranta, E. J. O'Connor and M. P. Cadeddu. Atmos. Meas. Tech., 8, 2663-2683.
• (100) Mixing length controls on high resolution simulations of convective storms
  Hanley, K. E., R. S. Plant, T. H. M. Stein, R. J. Hogan, J. C. Nicol, H. W. Lean, C. Halliwell and P. A. Clark. Q. J. R. Meteorol. Soc., 141, 272-284.
• (99) Evaluation of boundary-layer type in a weather forecast model using long-term Doppler lidar observations
  Harvey, N. J., R. J. Hogan and H. F. Dacre. Q. J. R. Meteorol. Soc., 141, 1345-1353: PDF
• (98) Mitigating errors in surface temperature forecasts using approximate radiation updates
  Hogan, R. J., and A. Bozzo. J. Adv. Modeling Earth Sys., 7, 836-853: PDF
• (97) The EarthCARE Satellite: the next step forward in global measurements of clouds, aerosols, precipitation and radiation
  Illingworth, A. J., H. W. Barker, A. Beljaars, H. Chepfer, J. Delanoe, C. Domenech, D. P. Donovan, S. Fukuda, M. Hirakata, R. J. Hogan, A. Huenerbein, P. Kollias, T. Kubota, T. Nakajima, T. Y. Nakajima, T. Nishizawa, Y. Ohno, H. Okamoto, R. Oki, K. Sato, M. Satoh, U. Wandinger and T. Wehr. Bull. Am. Meteorol. Soc., 96, 1311-1332.
• (96) Convective updraught evaluation in high-resolution NWP simulations using single-Doppler radar measurements
  Nicol, J. C., R. J. Hogan, T. H. M. Stein, K. E. Hanley, P. A. Clark, C. E. Halliwell, H. W. Lean and R. S. Plant. Q. J. R. Meteorol. Soc., 141, 3177-3189.
• (95) The DYMECS project: A statistical approach for the evaluation of convective storms in high-resolution NWP models
  Stein, T. H. M., R. J. Hogan, P. A. Clark, C. E. Halliwell, K. E. Hanley, H. W. Lean, J. C. Nicol and R. S. Plant. Bull. Am. Meteorol. Soc., 96, 939-951: PDF
• (94) The representation of the West-African Monsoon vertical cloud structure in the Met Office Unified Model: An evaluation with CloudSat
  Stein, T. H. M., D. J. Parker, R. J. Hogan, C. Birch, C. E. Holloway, G. Lister, J. H. Marsham and S. J. Woolnough. Q. J. R. Meteorol. Soc., doi:10.1002/qj.2614
• (93) Clouds, aerosol, and precipitation in the marine boundary layer: An ARM Mobile Facility deployment
  Wood, R., M. Wyant, C. S. Bretherton, J. Remillard, P. Kollias, J. Fletcher, J. Stemmler, S. deSzoeke, S. Yuter, M. Miller, D. Mechem, G. Tselioudis, C. Chiu, J. Mann, E. J. O'Connor, R. J. Hogan, X. Dong, M. Miller, V. Ghate, A. Jefferson, Q. Min, P. Minnis, R. Palinkonda, B. Albrecht, E. Luke, C. Hannay and Y. Lin. Bull. Am. Meteorol. Soc., 96, 419-440.

2014

• (92) The interdependence of continental warm cloud properties derived from unexploited solar background signal in ground-based lidar measurements
  Chiu, J. C., J. Holmes, R. J. Hogan and E. J. O'Connor. Atmos. Chem. Phys., 14, 8389-8401.
• (91) Normalized particle size distribution for remote sensing application
  Delanoe, J., A. J. Heymsfield, A. Protat, A. Bansemer and R. J. Hogan. J. Geophys. Res., 119, 4136-4148.
• (90) A novel ensemble method for retrieving cloud properties in 3D using ground-based scanning radar and zenith radiances
  Fielding, M. D., J. C. Chiu, R. J. Hogan and G. Feingold. J. Geophys. Res, 119, 10912-10930.
• (89) Fast reverse-mode automatic differentiation using expression templates in C++
  Hogan, R. J., ACM Trans. Math. Softw., 40, 26:1-26:16: PDF [Adept Website]
• (88) Equation for the microwave backscatter cross section of aggregate snowflakes using the Self-Similar Rayleigh-Gans Approximation
  Hogan, R. J., and C. D. Westbrook. J. Atmos. Sci., 71, 3292-3301: PDF [SSRGA Website]
• (87) Aerosol impacts on drizzle properties in warm clouds from ARM Mobile Facility maritime and continental deployments
  Mann, J. L., J. C. Chiu, R. J. Hogan, E. J. O'Connor, T. S. L'Ecuyer, T. H. M. Stein and A. Jefferson. J. Geophys. Res., 119, 4204-4227: PDF
• (86) Modelling the diurnal cycle of tropical convection across the "Grey Zone"
  Pearson, K. J., G. M. S. Lister, C. E. Brich, R. P. Allan, R. J. Hogan and S. J. Woolnough. Q. J. R. Meteorol. Soc., 140, 491-499.
• (85) The three-dimensional morphology of simulated and observed convective storms over southern England
  Stein, T. H. M., R. J. Hogan, K. E. Hanley, J. C. Nicol, H. W. Lean, R. S. Plant, P. A. Clark and C. E. Halliwell. Mon. Weath. Rev, 142, 3264-3283: PDF

2013

• (84) A variational approach to retrieve rain rate by combining information from rain gauges, radars and microwave links
  Bianchi, B., P. J. van Leeuwen, R. J. Hogan and A. Berne, J. Hydrometeorol., 14, 1897-1909 (Corrigendum: 15, page 907).
• (83) From CloudSat-CALIPSO to Earth-Care: Evolution of the DARDAR cloud classication and its validation using airborne radar-lidar observations
  Ceccaldi, M., J. Delanoe, R. J. Hogan, N. L. Pounder, A. Protat and J. Pelon, J. Geophys. Res., 70, 708-724.
• (82) Cloud reconstructions for shortwave surface radiation closure: Evaluation of 3D scanning cloud radar scan strategy
  Fielding, M. D., J. C. Chiu, R. J. Hogan and G. Feingold, J. Geophys. Res., 118, 9153-9167.
• (81) A method to diagnose boundary-layer type using Doppler lidar
  Harvey, N. J., R. J. Hogan and H. F. Dacre. Q. J. R. Meteorol. Soc., 139, 1681-1693: PDF
• (80) Incorporating the effects of 3D radiative transfer in the presence of clouds into two-stream radiation schemes
  Hogan, R. J., and J. K. P. Shonk. J. Atmos. Sci., 70, 708-724: PDF

2012

• (79) Cloud droplet size and liquid water path retrievals from zenith radiance measurements: examples from the Atmospheric Radiation Measurement Program and the Aerosol Robotic Network
  Chiu, J. C., A. Marshak, C.-H. Huang, T. Varnai, R. J. Hogan, D. M. Giles, B. N. Holben, E. O'Connor, Y. Knyazikhin, W. J. Wiscombe, Atmos. Chem. Phys., 51, 350-365.
• (78) Parametrising the horizontal inhomogeneity of ice water content using CloudSat observations
  Hill, P. G., R. J. Hogan, J. Manners and J. C. Petch. Q. J. R. Meteorol. Soc., 138, 1784-1793: PDF
• (77) Radar scattering from ice aggreates using the horizontally aligned oblate spheroid approximation
  Hogan, R. J., L. Tian, P. R. A. Brown, C. D. Westbrook, A. J. Heymsfield and J. D. Eastment. J. Appl. Meteorol. Climatology, 51, 655-671: PDF [SSRGA Website]
• (76) A variational method to retrieve the extinction profile in liquid clouds using multiple field-of-view lidar
  Pounder, N. L., R. J. Hogan, T. Varnai, A. Battaglia and R. F. Cahalan: J. Appl. Meteorol. Climatology, 51, 350-365: PDF
• (75) Impact of improved representation of horizontal and vertical cloud structure in a climate model
  Shonk, J. K. P., R. J. Hogan and J. Manners. Clim. Dyn., 38, 2365-2376, doi: 10.1007/s00382-011-1174-2: PDF
• (74) Toward understanding of differences in current cloud retrievals of ARM ground-based measurements
  Zhao, C., S. Xie, S. A. Klein, A. Protat, M. D. Shupe, S. A. McFarlane, J. M. Comstock, J. Delanoë, M. Deng, M. Dunn, R. J. Hogan, D. Huang, M. P. Jensen, G. G. Mace, R. McCoy, E. J. O'Connor, D. D. Turner and Z. Wang. J. Geophys. Res., 117, D10206, doi:10.1029/2011JD016792.

2011

• (73) A 3D cloud construction algorithm for the EarthCARE satellite mission
  Barker, H. W., M. P. Jerg, T. Wehr, S. Kato, D. P. Donovan and R. J. Hogan. Q. J. R. Meteorol. Soc., 137, 1042-1058.
• (72) Evaluating the structure and magnitude of the ash plume during the initial phase of the 2010 Eyjafjallajokull eruption using lidar observations and NAME simulations
  Dacre, H. F., A. L. M. Grant, R. J. Hogan, S. E. Belcher, D. Thomson, B. Devenish, F. Marenco, J. Haywood, A. Ansmann, I. Mattis and L. Clarisse. J. Geophys. Res., 116, D00U03, doi:10.1029/2011JD015608.
• (71) Evaluation of ice cloud representation in the ECMWF and UK Met Office models using CloudSat and CALIPSO data
  Delanoë, J., R. J. Hogan, R. M. Forbes, A. Bodas-Salcedo and T. H. M. Stein. Q. J. R. Meteorol. Soc., 137, 2064-2078: PDF
• (70) Determining the contribution of volcanic ash and boundary layer aerosol in backscatter lidar returns: A three-component atmosphere approach
  Marenco, F., and R. J. Hogan, J. Geophys. Res., 116, D00U06, doi:10.1029/2010JD015415.
• (69) A comparison between four different retrieval methods for ice-cloud properties using data from the CloudSat, CALIPSO, and MODIS satellites
  Stein, T. H. M., J. Delanoë and R. J. Hogan. J. Appl. Meteorol. Climatology, 50, 1952-1969: PDF
• (68) The vertical cloud structure of the West African monsoon: A four-year climatology using CloudSat and CALIPSO
  Stein, T. H. M., D. J. Parker, J. Delanoë, N. S. Dixon, R. J. Hogan, P. Knippertz, R. I. Maidment and J. H. Marsham., J. Geophys. Res., 116, D22205, doi: 10.1029/2011JD016029: PDF

2010

• (67) Multiple-scattering in radar systems: a review
  Battaglia, A., S. Tanelli, S. Kobayashi, D. Zrnic, R. J. Hogan and C. Simmer. J. Quant. Spectroscopy, 111, 917-947: PDF
• (66) Using continuous ground-based radar and lidar measurements for evaluating the representation of clouds in four operational models
  Bouniol, D., A. Protat, J. Delanoë, J. Pelon, D. P. Donovan, J.-M. Piriou, F. Bouyssel, A. M. Tompkins, D. R. Wilson, Y. Morille, M. Haeffelin, E. J. O'Connor, R. J. Hogan, A. J. Illingworth. J. Appl. Meteorol. Climatol., 88, 883-898.
• (65) Combined CloudSat-CALIPSO-MODIS retrievals of the properties of ice clouds
  Delanoë, J., and R. J. Hogan. J. Geophys. Res., 115, D00H29, doi:10.1029/2009JD012346: PDF
• (64) The full-spectrum correlated k method for longwave atmospheric radiative transfer using an effective Planck function
  Hogan, R. J., J. Atmos. Sci., 67, 2086-2100: PDF
• (63) Equitability revisited: Why the `equitable threat score' is not equitable
  Hogan, R. J., C. A. T. Ferro, I. T. Jolliffe and D. B. Stephenson. Weath. Forecasting, 25, 710-726: PDF
• (62) A method for estimating the turbulent kinetic energy dissipation rate from a vertically-pointing Doppler lidar, and independent evaluation from balloon-borne in-situ measurements
  O'Connor, E. J., A. J. Illingworth, I. M. Brooks, C. D. Westbrook, R. J. Hogan, F. Davies and B. J. Brooks. J. Atmos. Oceanic Technol., 27, 1652-1664: PDF
• (61) Evaluation of model representation of the evolution of convective systems using satellite observations of outgoing longwave radiation
  Pearson, K. J., R. J. Hogan, R. P. Allan, G. M. S. Lister and C. E. Holloway. J. Geophys. Res., 115, D20206, doi:10.1029/2010JD014265: PDF
• (60) Effect of improving representation of horizontal and vertical cloud structure on the Earth's radiation budget - 1. Review and parameterisation.
  Shonk, J. K. P., R. J. Hogan, J. M. Edwards and G. G. Mace. Q. J. R. Meteorol. Soc., 136, 1191-1204: PDF
• (59) Effect of improving representation of horizontal and vertical cloud structure on the Earth's radiation budget - 2. The global effects.
  Shonk, J. K. P. and R. J. Hogan. Q. J. R. Meteorol. Soc., 136, 1205-1215: PDF
• (58) Doppler lidar measurements of oriented planar ice crystals falling from supercooled and glaciated layer clouds
  Westbrook, C. D., A. J. Illingworth, E. J. O'Connor and R. J. Hogan. Q. J. R. Meteorol. Soc., 136, 260-276.
• (57) Estimates of drizzle drop size and precipitation rate using two-colour lidar measurements
  Westbrook, C. D., R. J. Hogan, E. J. O'Connor and A. J. Illingworth. Atmos. Meas. Techn., 3, 671-681: PDF
• (56) Using Doppler radar with a simple explicit microphysics model to diagnose problems with ice sublimation depth-scales in forecast models
  Wilkinson, J. M., R. J. Hogan and A. J. Illingworth. Q. J. R. Meteorol. Soc., 136, 2094-2108: PDF

2009

• (55) Evaluating forecasts of the evolution of the cloudy boundary layer using diurnal composites of radar and lidar observations
  Barrett, A. I., R. J. Hogan and E. J. O'Connor. Geophys. Res. Lett., 36, L17811, doi:10.1029/2009GL038919: PDF
• (54) Comparison of balloon-carried atmospheric motion sensors with Doppler lidar measurements
  Harrison, R. G., A. M. Heath, R. J. Hogan and G. W. Rogers. Rev. Sci. Inst., 80, 026108: PDF .
• (53) Vertical velocity variance and skewness in clear and cloud-topped boundary layers as revealed by Doppler lidar
  Hogan, R. J., A. L. M. Grant, A. J. Illingworth, G. N. Pearson and E. J. O'Connor. Q. J. R. Meteorol. Soc., 135, 635-643: PDF
• (52) Verification of cloud-fraction forecasts
  Hogan, R. J., E. J. O'Connor and A. J. Illingworth. Q. J. R. Meteorol. Soc., 135, 1494-1511: PDF

2008

• (51) A variational scheme for retrieving ice cloud properties from combined radar, lidar and infrared radiometer
  Delanoë, J., and R. J. Hogan. J. Geophys. Res., 113, D07204, doi:10.1029/2007JD009000: PDF
• (50) A one-dimensional finite-element boundary layer model with a vertical adaptive grid
  Dunbar, T. M., E. Hanert and R. J. Hogan. Bound. Layer. Meteorol., 128, 459-472: PDF
• (49) Retrospective cloud determinations from surface solar radiation measurements
  Harrison, R. G., N. Chalmers and R. J. Hogan. Atmos. Res., 90, 54-62.
• (48) Testing IWC retrieval methods using radar and ancillary measurements with in situ data
  Heymsfield, A. J., A. Protat, R. T. Austin, D. Bouniol, R. J. Hogan, H. Okamoto, K. Sato, G.-J. van Zadelhoff, D. P. Donovan and Z. Wang, J. Appl. Meteorol. Climatology, 47, 135-163.
• (47) Fast lidar and radar multiple-scattering models - 1. Small-angle scattering using the photon variance-covariance method
  Hogan, R. J. J. Atmos. Sci., 65, 3621-3635: PDF [Multiscatter Website]
• (46) Fast lidar and radar multiple-scattering models - 2. Wide-angle scattering using the time-dependent two-stream approximation
  Hogan, R. J., and A. Battaglia. J. Atmos. Sci., 65, 3636-3651: PDF [Multiscatter Website]
• (45) Estimating mass and momentum fluxes in a line of cumulonimbus observed by a single high-resolution Doppler radar
  Hogan, R. J., A. J. Illingworth and K. Halladay. Quart. J. Roy. Meteorol. Soc., 134, 1127-1141: PDF
• (44) Tripleclouds: an efficient method for representing horizontal cloud inhomogeneity in 1D radiation schemes by using three regions at each height
  Shonk, J. K. P., and R. J. Hogan. J. Climate, 21, 2352-2370: PDF
• (43) The capacitance of pristine ice crystals and aggregate snowflakes
  Westbrook, C. D., R. J. Hogan, A. J. Illingworth. J. Atmos. Sci., 65, 206-219.
• (42) 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, A. J. Illingworth and A. Benedetti. Mon. Weath. Rev., 136, 3742-3759: PDF
• (41) Three-dimensional radiative transfer in mid-latitude cirrus clouds
  Zhong, W., R. J. Hogan and J. D. Haigh. Quart. J. Roy. Meteorol. Soc., 134, 199-215: PDF

2007

• (40) Accurate liquid water path retrieval from low-cost microwave radiometers using additional information from lidar and operational forecast models
  Gaussiat, N., R. J. Hogan and A. J. Illingworth. J. Atmos. Oceanic Technol., 24, 1562-1575: PDF
• (39) A sensitivity study of the effect of horizontal photon transport on the radiative forcing of contrails
  Gounou, A., and R. J. Hogan. J. Atmos. Sci., 64, 1706-1716: PDF
• (38) Response to comment on "In-situ atmospheric turbulence measurement using the terrestrial magnetic field - a compass for a radiosonde" by Ralph D. Lorenz
  Harrison, R. G., and R. J. Hogan. J. Atmos. Oceanic Technol., 24, 1521-1522.
• (37) A three-dimensional magnetometer for motion sensing of a balloon-carried atmospheric measurement package
  Harrison, R. G., G. W. Rogers and R. J. Hogan. Rev. Sci. Inst., 78, 124501.
• (36) Refinements to ice particle mass dimensional and terminal velocity relationships for ice clouds - 2. Evaluation and parameterizations of ensemble ice particle sedimentation velocities
  Heymsfield, A. J., G.-J. van Zadelhoff, D. P. Donovan, F. Fabry, R. J. Hogan and A. J. Illingworth. J. Atmos. Sci., 64,1068-1088.
• (35) A variational scheme for retrieving rainfall rate and hail reflectivity fraction from polarization radar
  Hogan, R. J., J. Appl. Meteorol. Climatology, 46, 1544-1564: PDF
• (34) Cloudnet - continuous evaluation of cloud profiles in seven operational models using ground-based observations
  Illingworth, A. J., R. J. Hogan, E. J. O'Connor, D. Bouniol, M. E. Brooks, J. Delanoë, 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, U. Willen, D. R. Wilson and C. L. Wrench. Bull. Am. Meteorol. Soc., 88, 883-898: PDF
• (33) Comparison between ATSR-2 stereo, MOS O₂ A-band and ground-based cloud top heights
  Naud, C., K. L. Mitchell, J.-P. Muller, E. E. Clothiaux, P. Albert, R. Preusker, J. Fischer, R. J. Hogan. Int. J. Remote Sensing, 28, 1969-1987.
• (32) Theory and observations of ice particle evolution in cirrus using Doppler radar: evidence for aggregation
  Westbrook, C. D., R. J. Hogan, A. J. Illingworth and E. J. O'Connor. Geophys. Res. Lett., 34, L02824, doi:10.1029/2006GL027863: PDF

2006

• (31) Ice sublimation depth scales in frontal cloud
  Forbes, R. M., and R. J. Hogan. Q. J. R. Meteorol. Soc., 132, 865-884.
• (30) In-situ atmospheric turbulence measurement using the terrestrial magnetic field: a compass for a radiosonde
  Harrison, R. G., and R. J. Hogan. J. Atmos. Oceanic Technol., 23, 517-523: PDF.
• (29) Fast approximate calculation of multiply scattered lidar returns
  Hogan, R. J. Applied Optics, 45, 5984-5992: PDF [Multiscatter Website]
• (28) Independent evaluation of the ability of spaceborne radar and lidar to retrieve the microphysical and radiative properties of ice clouds
  Hogan, R. J., D. P. Donovan, C. Tinel, M. A. Brooks, D. Bouniol, A. J. Illingworth and J. P. V. Poiares Baptista. J. Atmos. Oceanic Technol., 23, 211-227: PDF
• (27) The retrieval of ice water content from radar reflectivity factor and temperature and its use in the evaluation of a mesoscale model
  Hogan, R. J., M. P. Mittermaier and A. J. Illingworth. J. Appl. Meteorol. Climatology, 45, 301-317: PDF
• (26) Evaluation of a large eddy model simulation of a mixed-phase altocumulus cloud using microwave radiometer, lidar and Doppler radar data
  Marsham, J., S. Dobbie and R. J. Hogan. Q. J. R. Meteorol. Soc., 132, 1693-1715: PDF
• (25) Assessing vertical resolution requirements for operational weather radar data quality
  Mittermaier, M. P., A. J. Illingworth and R. J. Hogan. Atmos. Sci. Lett., 7, 9-14.

2005

• (24) Parameterizing the difference in cloud fraction defined by area and volume as observed with radar and lidar
  Brooks, M. E., R. J. Hogan and A. J. Illingworth. J. Atmos. Sci., 62, 2248-2260.
• (23) Numerical modelling of mixed-phase frontal clouds observed during the CWVC project
  Clark, P. D., T. W. Choularton, P. R. A. Brown, P. R. Field, A. J. Illingworth and R. J. Hogan. Q. J. R. Meteorol. Soc., 131, 1677-1694.
• (22) Parametrization of ice particle size distributions for mid-latitude stratiform cloud
  Field, P. R., R. J. Hogan, P. R. A. Brown, A. J. Illingworth, T. W. Choularton and R. J. Cotton. Q. J. R. Meteorol. Soc., 131, 1997-2017. PDF
• (21) A 3D stochastic cloud model for investigating the radiative properties of inhomogeneous cirrus clouds
  Hogan, R. J., and S. F. Kew. Q. J. R. Meteorol. Soc., 131, 2585-2608: PDF [Cloudgen Website]
• (20) Stratocumulus liquid water content from dual-wavelength radar
  Hogan, R. J., N. Gaussiat and A. J. Illingworth. J. Atmos. Oceanic Technol., 22, 1207-1218: PDF
• (19) Retrieving stratocumulus drizzle parameters using Doppler radar and lidar
  O'Connor, E. J., R. J. Hogan and A. J. Illingworth. J. Appl. Meteorol., 44, 14-27. PDF
• (18) The retrieval of ice cloud properties from cloud radar and lidar synergy
  Tinel, C., J. Testud, J. Pelon, R. J. Hogan, A. Protat, J. Delanoë and D. Bouniol. J. Appl. Meteorol., 44, 860-875.

2004

• (17) Simultaneous radar and aircraft observations of mixed-phase cloud at the 100-m-scale
  Field, P. R., R. J. Hogan, P. R. A. Brown, A. J. Illingworth, T. W. Choularton, P. H. Kaye, E. Hirst and R. Greenaway. Quart. J. Roy. Meteorol. Soc., 130, 1877-1904: PDF
• (16) Estimating the global distribution of supercooled liquid water clouds using spaceborne lidar
  Hogan, R. J., M. D. Behera, E. J. O'Connor and A. J. Illingworth. Geophys Res. Lett., 32, L05106, doi:10.1029/2003GL018977: PDF
• (15) Using mesoscale model winds for correcting wind-drift errors in radar estimates of surface rainfall
  Mittermaier, M. P., R. J. Hogan and A. J. Illingworth. Q. J. R. Meteorol. Soc., 130, 2105-2123.
• (14) A technique for auto-calibration of cloud lidar
  O'Connor, E. J., A. J. Illingworth and R. J. Hogan. J. Atmos. Oceanic Tech., 21, 777-786. PDF

2003

• (13) Characteristics of mixed-phase clouds - 1. Lidar, radar and aircraft observations from CLARE'98
  Hogan, R. J., P. N. Francis, H. Flentje, A. J. Illingworth, M. Quante and J. Pelon. Quart. J. Roy. Meteorol. Soc., 129, 2089-2116. PDF
• (12) Characteristics of mixed-phase clouds - 2. A climatology from ground-based lidar
  Hogan, R. J., A. J. Illingworth, E. J. O'Connor and J. P. V. Poiares Baptista. Quart. J. Roy. Meteorol. Soc., 129, 2117-2134. PDF
• (11) Absolute calibration of 94/95-GHz radars using rain
  Hogan, R. J., D. Bouniol, D. N. Ladd, E. J. O'Connor and A. J. Illingworth. J. Atmos. Oceanic Tech., 20(4), 572-580. PDF
• (10) Parameterizing ice cloud inhomogeneity and the overlap of inhomogeneities using cloud radar data
  Hogan, R. J., and A. J. Illingworth. J. Atmos. Sci., 60(5), 756-767. PDF
• (9) Simulations of the glaciation of a frontal mixed-phase cloud with the Explicit Microphysics Model
  Phillips, V. T. J., T. W. Choularton, A. J. Illingworth, R. J. Hogan and P. R. Field. Quart. J. Roy. Meteorol. Soc., 129, 1351-1371.

2002

• (8) Properties of embedded convection in warm-frontal mixed-phase cloud from aircraft and polarimetric radar
  Hogan, R. J., P. R. Field, A. J. Illingworth, R. J. Cotton and T. W. Choularton. Quart. J. Roy. Meteorol. Soc., 128, 451-476. PDF

2001

• (7) Cloud effective particle size and water content profile retrievals using combined lidar and radar observations - 2. Comparison with IR radiometer and in situ measurements in ice clouds
  Donovan, D. P., A. C. A. P. van Lammeren, R. J. Hogan, H. W. J. Russchenberg, A. Apituley, P. N. Francis, J. Testud, J. Pelon, M. Quante and J. W. F. Goddard. J. Geophys. Res., 106(D21), 27449-27464.
• (6) Comparison of ECMWF winter-season cloud fraction with radar derived values
  Hogan, R. J., C. Jakob and A. J. Illingworth, J. Appl. Meteorol., 40(3), 513-525. PDF

2000

• (5) Combined radar and lidar cloud remote sensing: Comparison with IR radiometer and in-situ measurements
  Donovan, D. P., A. C. A. P. van Lammeren, R. Hogan, H. W. J. Russchenberg, A. Apituley, P. N. Francis, J. Testud, J. Pelon, M. Quante and J. Agnew, Phys. Chem. Earth, 25(10-12), 1049-1055.
• (4) Measuring crystal size in cirrus using 35- and 94-GHz radars
  Hogan, R. J., A. J. Illingworth and H. Sauvageot, J. Atmos. Oceanic Tech., 17(1), 27-37. PDF
• (3) Deriving cloud overlap statistics from radar
  Hogan, R. J., and A. J. Illingworth, Quart. J. Roy. Meteorol. Soc., 126(569A), 2903-2909. PDF
• (2) Weather observations from the Chilbolton Advanced Meteorological Radar
  Kilburn, C. A. D., D. Chapman, A. J. Illingworth and R. J. Hogan, Weather, 55(10), 352-355.

1999

• (1) The potential of spaceborne dual-wavelength radar to make global measurements of cirrus clouds
  Hogan, R. J., and A. J. Illingworth, J. Atmos. Oceanic Tech., 16(5), 518-531. PDF