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

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