Senior ScientistResearch Department, Earth System Modelling Section, Physical Processes Grouppage tabs Profile Summary: Robin is responsible for the representation of solar and infrared radiation in ECMWF's Integrated Forecasting System. Radiative processes provide the energy that drives the atmospheric circulation, and an accurate representation in forecast models is crucial for surface temperature forecasts as well as for pushing the boundaries of predictability. Professional interests: Developing novel numerical methods for radiative transfer and particle scattering Managing the CKDMIP project to evaluate and improve the treatment of gas optics in the radiation schemes used for weather and climate prediction Cloud and precipitation remote sensing using radar and lidar, and their use in model evaluation Cloud processes, boundary-layer meteorology, the stratosphere and other areas of atmospheric science Developing the fast and user-friendly automatic differentiation software tool Adept Some specific research questions currently being tackled: How can we improve the accuracy and efficiency of the representation of gas optics in radiation schemes? How can we represent the effects of 3D radiative transfer efficiently in NWP models? How can the radiative effects of urban and vegetated areas be represented in NWP models? How can the synergy of instruments on board the forthcoming EarthCARE satellite be used optimally to retrieve cloud and precipitation properties? The offline version of the ECMWF radiation scheme is available under the OpenIFS license. Career background: 2014–present: Senior Scientist, ECMWF, UK (95%) 2010–present: Professor of Atmospheric Physics, Dept of Meteorology, University of Reading, UK (5% since April 2014) 2011–2014: Head of Department for Research, Dept of Meteorology, University of Reading, UK 2007–2010: Reader in Atmospheric Physics, Dept of Meteorology, University of Reading, UK 2003–2007: Lecturer, Department of Meteorology, University of Reading, UK 1998–2002: Postdoctoral research scientist, Department of Meteorology, University of Reading, UK External recognitions: 2014: Henry G. Houghton Award, American Meteorological Society 2012: Elected a commissioner of the International Radiation Commission 2007: Elected a Fellow of the Royal Meteorological Society 2005: L. F. Richardson Prize, Royal Meteorological Society Publications Latest publicationsTo see all publications please visit the links on the right-hand side2022Chloe Brimicombe, Tiago Quintino, Simon Smart, Claudia Di Napoli, Robin Hogan, Hannah L. Cloke [ORCID iD: 0000-0002-1472-868X], Florian Pappenberger (April 2022) Calculating the Cosine of the Solar Zenith Angle for Thermal Comfort Indices, ECMWF Technical Memoranda n. 895. DOI: 10.21957/o7pcu1x2b 2021Inna Polichtchouk, Peter Bechtold, Massimo Bonavita, Richard Forbes, Sean Healy, Robin Hogan, Patrick Laloyaux, Michael Rennie, Timothy Stockdale, Nils Wedi, Michail Diamantakis, Johannes Flemming, Stephen English, Lars Isaksen, Filip Vána, Sonja Gisinger, Nicholas Byrne (January 2021) Stratospheric modelling and assimilation, ECMWF Technical Memoranda n. 877. DOI: 10.21957/25hegfoq Ryan Williams, Robin Hogan, Inna Polichtchouk, Michaela Hegglin, Timothy Stockdale, Johannes Flemming (October 2021) Evaluating the impact of prognostic ozone in IFS NWP forecasts, ECMWF Technical Memoranda n. 887. DOI: 10.21957/rakfo1qo3 2018Robin Hogan, Alessio Bozzo (2018) A new radiation scheme for the IFS, ECMWF Newsletter, issue 155, pp. 26-31. DOI: 10.21957/ab84rhs9t5 Robin J. Hogan, Tristan Quaife, Renato Braghiere (January 2018) Fast matrix treatment of 3-D radiative transfer in vegetation canopies: SPARTACUS-Vegetation 1.1, Geoscientific Model Development n. 1, pp. 339–350. DOI: 10.5194/gmd-11-339-2018 I. Polichtchouk, T. G. Shepherd, R. J. Hogan, P. Bechtold (May 2018) Sensitivity of the Brewer–Dobson Circulation and Polar Vortex Variability to Parameterized Nonorographic Gravity Wave Drag in a High-Resolution Atmospheric Model, Journal of the Atmospheric Sciences n. 5, pp. 1525–1543. DOI: 10.1175/jas-d-17-0304.1 Robin J. Hogan, Alessio Bozzo (July 2018) A flexible and efficient radiation scheme for the ECMWF model, Journal of Advances in Modeling Earth Systems. DOI: 10.1029/2018ms001364 Rossana Dragani, Angela Benedetti, Johannes Flemming, Gianpaolo Balsamo, Michail Diamantakis, Alan Geer, Robin Hogan, Timothy Stockdale, Melanie Ades, Anna Agusti-Panareda, Barré J., Peter Bechtold, Alessio Bozzo, Hans Hersbach, Elias Hólm, Zak Kipling, Antje Inness, Julie Letertre-Danczak, Sebastien Massart, Marco Matricardi, Tony McNally, M. Parrington, irina sandu, Cornel Soci, Frederic Vitart (December 2018) Atmospheric Composition priority developments for Numerical Weather Prediction, ECMWF Technical Memoranda n. 833. DOI: 10.21957/5e0whui2y Shepherd T.G., I. Polichtchouk, Robin Hogan, Simmons A.J. (June 2018) Report on Stratosphere Task Force, ECMWF Technical Memorandum n. 824. DOI: 10.21957/0vkp0t1xx Hans Hersbach, Patricia de Rosnay, Bill Bell, Dinand Schepers, Adrian Simmons, Cornel Soci, Saleh Abdalla, Magdalena A. Balmaseda, Gianpaolo Balsamo, Peter Bechtold, P. Berrisford, Jean Bidlot, de Boisséson E., Massimo Bonavita, Browne P., Roberto Buizza, Per Dahlgren, Dick Dee, Rossana Dragani, Michail Diamantakis, Johannes Flemming, Richard Forbes, Alan Geer, Thomas Haiden, Elias Hólm, L. Haimberger, Robin Hogan, Andras Horanyi, Janiskova M., Patrick Laloyaux, Philippe Lopez, Joaquin Muñoz-Sabater, C. Peubey, Raluca Radu, David Richardson, Jean-Noel THEPAUT, Frederic Vitart, Yang X, Ervin Zsoter, Hao Zuo (December 2018) Operational global reanalysis: progress, future directions and synergies with NWP, ERA Report Series n. 27. DOI: 10.21957/tkic6g3wm 2017Roberto Buizza, Peter Bechtold, Massimo Bonavita, Niels Bormann, Alessio Bozzo, Thomas Haiden, Robin Hogan, Elias Hólm, Gabor Radnoti, David Richardson, Michael Sleigh (2017) IFS Cycle 43r3 brings model and assimilation updates, ECMWF newsletter, issue 152, pp. 18-22. DOI: 10.21957/76t4e1 Jussi Leinonen, Stefan Kneifel, Robin J. Hogan (August 2017) Evaluation of the Rayleigh-Gans approximation for microwave scattering by rimed snowflakes, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.3093 Martin Leutbecher, Sarah-Jane Lock, Pirkka Ollinaho, Simon T. K. Lang, Gianpaolo Balsamo, Peter Bechtold, Massimo Bonavita, Hannah M. Christensen, Michail Diamantakis, Emanuel Dutra, Stephen English, Michael Fisher, Richard M. Forbes, Jacqueline Goddard, Thomas Haiden, Robin J. Hogan, Stephan Juricke, Heather Lawrence, Dave MacLeod, Linus Magnusson, Sylvie Malardel, Sebastien Massart, Irina Sandu, Piotr K. Smolarkiewicz, Aneesh Subramanian, Frédéric Vitart, Nils Wedi, Antje Weisheimer (July 2017) Stochastic representations of model uncertainties at ECMWF: state of the art and future vision, Quarterly Journal of the Royal Meteorological Society n. 707, pp. 2315–2339. DOI: 10.1002/qj.3094 Shannon L. Mason, J. Christine Chiu, Robin J. Hogan, Lin Tian (April 2017) Improved rain-rate and drop-size retrievals from airborne andspaceborne Doppler radar, Atmospheric Chemistry and Physics Discussions, pp. 1–34. DOI: 10.5194/acp-2017-280 Robin J. Hogan, Ryan Honeyager, Jani Tyynelä, Stefan Kneifel (January 2017) Calculating the millimetre-wave scattering phase function of snowflakes using the self-similar Rayleigh-Gans Approximation, Quarterly Journal of the Royal Meteorological Society n. 703, pp. 834–844. DOI: 10.1002/qj.2968 R. Giles Harrison, Gavin Pretor-Pinney, Graeme J. Marlton, Graeme D. Anderson, Daniel J. Kirshbaum, Robin J. Hogan (May 2017) Asperitas - a newly identified cloud supplementary feature, Weather n. 5, pp. 132–141. DOI: 10.1002/wea.2996 Andrew I. Barrett, Robin J. Hogan, Richard M. Forbes (September 2017) Why are mixed-phase altocumulus clouds poorly predicted by large-scale models? Part 2. Vertical resolution sensitivity and parameterization, Journal of Geophysical Research: Atmospheres n. 18, pp. 9927–9944. DOI: 10.1002/2016jd026322 Andrew I. Barrett, Robin J. Hogan, Richard M. Forbes (September 2017) Why are mixed-phase altocumulus clouds poorly predicted by large-scale models? Part 1. Physical processes, Journal of Geophysical Research: Atmospheres n. 18, pp. 9903–9926. DOI: 10.1002/2016jd026321 Alan Geer, Maike Ahlgrimm, Peter Bechtold, Massimo Bonavita, Niels Bormann, Stephen English, Mark Fielding, Richard Forbes, Robin Hogan, Elias Hólm, Marta Janiskova, Katrin Lonitz, Philippe Lopez, Marco Matricardi, irina sandu, P. Weston (2017) Assimilating observations sensitive to cloud and precipitation, ECMWF Technical Memoranda n. 815. DOI: 10.21957/sz7cr1dym Robin Hogan, Maike Ahlgrimm, Gianpaolo Balsamo, Anton Beljaars, P. Berrisford, Alessio Bozzo, Francesca Di Giuseppe, R.M. Forbes, Thomas Haiden, Simon Lang, Michael Mayer, I. Polichtchouk, irina sandu, Frederic Vitart, Nils Wedi (2017) Radiation in numerical weather prediction, ECMWF Technical Memoranda n. 816. DOI: 10.21957/2bd5dkj8x I. Polichtchouk, Robin Hogan, T.G. Shepherd, Peter Bechtold, Timothy Stockdale, S. Malardel, Sarah-Jane Lock, Linus Magnusson (2017) What influences the middle atmosphere circulation in the IFS?, ECMWF Technical Memoranda n. 809. DOI: 10.21957/mfsnfv15o 2016Pirkka Ollinaho, Sarah-Jane Lock, Martin Leutbecher, Peter Bechtold, Anton Beljaars, Alessio Bozzo, Richard M. Forbes, Thomas Haiden, Robin J. Hogan, Irina Sandu (2016) Towards process-level representation of model uncertainties: stochastically perturbed parametrizations in the ECMWF ensemble, Quarterly Journal of the Royal Meteorological Society n. 702, pp. 408–422. DOI: 10.1002/qj.2931 M. Haeffelin, S. Crewell, A. J. Illingworth, G. Pappalardo, H. Russchenberg, M. Chiriaco, K. Ebell, R. J. Hogan, F. Madonna (April 2016) Parallel Developments and Formal Collaboration between European Atmospheric Profiling Observatories and the U.S. ARM Research Program, Meteorological Monographs, pp. 29.1–29.34. DOI: 10.1175/amsmonographs-d-15-0045.1 Robin Hogan, Alessio Bozzo (2016) ECRAD: A new radiation scheme for the IFS, ECMWF Technical Memorandum n. 787. DOI: 10.21957/whntqkfdz P. Ollinaho, Sarah-Jane Lock, Martin Leutbecher, Peter Bechtold, Anton Beljaars, Alessio Bozzo, R.M. Forbes, Thomas Haiden, Robin Hogan, irina sandu (2016) Towards process-level representation of model uncertainties: Stochastically perturbed parameterisations in the ECMWF ensemble, ECMWF Technical Memoranda n. 784. DOI: 10.21957/jjk9l5yy Hogan Robin J., Hirahara Shoji (2016) Effect of solar zenith angle specification in models on mean shortwave fluxes and stratospheric temperatures, Geophysical Research Letters n. 1, pp. 482-488. DOI: 10.1002/2015GL066868 Schafer Sophia A. K., Hogan Robin J., Klinger Carolin, Chiu J. Christine, Mayer Bernhard (2016) Representing 3-D cloud radiation effects in two-stream schemes: 1. Longwave considerations and effective cloud edge length, Journal of Geophysical Research-Atmospheres n. 14, pp. 8567-8582. Hogan Robin J., Schafer Sophia A. K., Klinger Carolin, Chiu J. Christine, Mayer Bernhard (2016) Representing 3-D cloud radiation effects in two-stream schemes: 2. Matrix formulation and broadband evaluation, Journal of Geophysical Research-Atmospheres n. 14, pp. 8583-8599. 2015Robin Hogan, Alessio Bozzo (2015) Reducing surface temperature errors at coastlines, ECMWF Newsletter, issue 145, pp. 30-34. DOI: 10.21957/lxcr5fqd Robin Hogan, Alessio Bozzo (February 2015) Mitigating surface temperature errors using approximate radiation updates, ECMWF Technical Memorandum n. 746. DOI: 10.21957/gak4abqr4 Robin Hogan, S. Hirahara (August 2015) Effect of solar zenith angle specification on mean shortwave fluxes and stratospheric temperatures, ECMWF Technical Memorandum n. 758. DOI: 10.21957/jwv20erlv Illingworth A. J., Barker H. W., Beljaars A., Ceccaldi M., Chepfer H., Clerbaux N., Cole J., Delanoe J., Domenech C., Donovan D. P., Fukuda S., Hirakata M., Hogan R. J., Huenerbein A., Kollias P., Kubota T., Nakajima T., Nakajima T. Y., Nishizawa T., Ohno Y., Okamoto H., Oki R., Sato K., Satoh M., Shephard M. W., Velazquez-Blazquez A., Wandinger U., Wehr T., van Zadelhoff G. -J. (2015) THE EARTHCARE SATELLITE The Next Step Forward in Global Measurements of Clouds, Aerosols, Precipitation, and Radiation, Bulletin of the American Meteorological Society n. 8, pp. 1311-1332. DOI: 10.1175/BAMS-D-12-00227.1 Stein Thorwald H. M., Parker Douglas J., Hogan Robin J., Birch Cathryn E., Holloway Christopher E., Lister Grenville M. S., Marsham John H., Woolnough Steven J. (2015) The representation of the West African monsoon vertical cloud structure in the Met Office Unified Model: an evaluation with CloudSat, Quarterly Journal of the Royal Meteorological Society n. 693, pp. 3312-3324. DOI: 10.1002/qj.2614 Hogan Robin J., Bozzo Alessio (2015) Mitigating errors in surface temperature forecasts using approximate radiation updates, Journal of Advances in Modeling Earth Systems n. 2, pp. 836-853. DOI: 10.1002/2015MS000455 Hanley Kirsty E., Plant Robert S., Stein Thorwald H. M., Hogan Robin J., Nicol John C., Lean Humphrey W., Halliwell Carol, Clark Peter A. (2015) Mixing-length controls on high-resolution simulations of convective storms, Quarterly Journal of the Royal Meteorological Society n. 686, pp. 272-284. DOI: 10.1002/qj.2356 Wood Robert, Wyant Matthew, Bretherton Christopher S., Remillard Jasmine, Kollias Pavlos, Fletcher Jennifer, Stemmler Jayson, de Szoeke Simone, Yuter Sandra, Miller Matthew, Mechem David, Tselioudis Georgrge, Chiu J. Christine, Mann Julian A. L., O'Connor Ewan J., Hogan Robin J., Dong Xiquan, Miller Markrk, Ghate Virendra, Jefferson Anne, Min Qilong, Minnis Patrickck, Palikonda Rabindra, Albrecht Bruce, Luke Ed, Hannay Cecile, Lin Yanluan (2015) CLOUDS, AEROSOLS, AND PRECIPITATION IN THE MARINE BOUNDARY LAYER An ARM Mobile Facility Deployment, Bulletin of the American Meteorological Society n. 3, pp. 419-439. DOI: 10.1175/BAMS-D-13-00180.1 Nicol J. C., Hogan R. J., Stein T. H. M., Hanley K. E., Clark P. A., Halliwell C. E., Lean H. W., Plant R. S. (2015) Convective updraught evaluation in high-resolution NWP simulations using single-Doppler radar measurements, Quarterly Journal of the Royal Meteorological Society n. 693, pp. 3177-3189. DOI: 10.1002/qj.2602 Harvey N. J., Hogan R. J., Dacre H. F. (2015) Evaluation of boundary-layer type in a weather forecast model utilizing long-term Doppler lidar observations, Quarterly Journal of the Royal Meteorological Society n. 689, pp. 1345-1353. DOI: 10.1002/qj.2444 Fielding M. D., Chiu J. C., Hogan R. J., Feingold G., Eloranta E., O'Connor E. J., Cadeddu M. P. (2015) Joint retrievals of cloud and drizzle in marine boundary layer clouds using ground-based radar, lidar and zenith radiances, Atmospheric Measurement Techniques n. 7, pp. 2663-2683. DOI: 10.5194/amt-8-2663-2015 Stein Thorwald H. M., Hogan Robin J., Clark Peter A., Halliwell Carol E., Hanley Kirsty E., Lean Humphrey W., Nicol John C., Plant Robert S. (2015) The DYMECS Project: A Statistical Approach for the Evaluation of Convective Storms in High-Resolution NWP Models, Bulletin of the American Meteorological Society n. 6, pp. 939-951. DOI: 10.1175/BAMS-D-13-00279.1 2014Mann Julian A. L., Chiu J. Christine, Hogan Robin J., O'Connor Ewan J., L'Ecuyer Tristan S., Stein Thorwald H. M., Jefferson Anne (2014) Aerosol impacts on drizzle properties in warm clouds from ARM Mobile Facility maritime and continental deployments, Journal of Geophysical Research-Atmospheres n. 7, pp. 4136-4148. DOI: 10.1002/2013JD021339 Bianchi Blandine, van Leeuwen Peter Jan, Hogan Robin J., Berne Alexis (2014) CORRIGENDUM, Journal of Hydrometeorology n. 2, pp. 907. DOI: 10.1175/JHM-D-14-0010.1 Hogan Robin J., Westbrook Christopher D. (2014) Equation for the Microwave Backscatter Cross Section of Aggregate Snowflakes Using the Self-Similar Rayleigh-Gans Approximation, Journal of the Atmospheric Sciences n. 9, pp. 3292-3301. DOI: 10.1175/JAS-D-13-0347.1 Pearson K. J., Lister G. M. S., Birch C. E., Allan R. P., Hogan R. J., Woolnough S. J. (2014) Modelling the diurnal cycle of tropical convection across the 'grey zone', Quarterly Journal of the Royal Meteorological Society n. 679, pp. 491-499. DOI: 10.1002/qj.2145 Hogan Robin J. (2014) Fast Reverse-Mode Automatic Differentiation using Expression Templates in C++, Acm Transactions on Mathematical Software n. 4. DOI: 10.1145/2560359 Delanoe J. M. E., Heymsfield A. J., Protat A., Bansemer A., Hogan R. J. (2014) Normalized particle size distribution for remote sensing application, Journal of Geophysical Research-Atmospheres n. 7, pp. 4204-4227. DOI: 10.1002/2013JD020700 Fielding Mark D., Chiu J. Christine, Hogan Robin J., Feingold Graham (2014) A novel ensemble method for retrieving properties of warm cloud in 3-D using ground-based scanning radar and zenith radiances, Journal of Geophysical Research-Atmospheres n. 18, pp. 10912-10930. DOI: 10.1002/2014JD021742 Chiu J. C., Holmes J. A., Hogan R. J., O'Connor E. J. (2014) The interdependence of continental warm cloud properties derived from unexploited solar background signals in ground-based lidar measurements, Atmospheric Chemistry and Physics n. 16, pp. 8389-8401. DOI: 10.5194/acp-14-8389-2014 Stein Thorwald H. M., Hogan Robin J., Hanley Kirsty E., Nicol John C., Lean Humphrey W., Plant Robert S., Clark Peter A., Halliwell Carol E. (2014) The Three-Dimensional Morphology of Simulated and Observed Convective Storms over Southern England, Monthly Weather Review n. 9, pp. 3264-3283. DOI: 10.1175/MWR-D-13-00372.1 2013Fielding Mark D., Chiu J. Christine, Hogan Robin J., Feingold Graham (2013) 3D cloud reconstructions: Evaluation of scanning radar scan strategy with a view to surface shortwave radiation closure, Journal of Geophysical Research-Atmospheres n. 16, pp. 9153-9167. DOI: 10.1002/jgrd.50614 Harvey Natalie J., Hogan Robin J., Dacre Helen F. (2013) A method to diagnose boundary-layer type using Doppler lidar, Quarterly Journal of the Royal Meteorological Society n. 676, pp. 1681-1693. DOI: 10.1002/qj.2068 Bianchi Blandine, van Leeuwen Peter Jan, Hogan Robin J., Berne Alexis (2013) A Variational Approach to Retrieve Rain Rate by Combining Information from Rain Gauges, Radars, and Microwave Links, Journal of Hydrometeorology n. 6, pp. 1897-1909. DOI: 10.1175/JHM-D-12-094.1 Ceccaldi M., Delanoe J., Hogan R. J., Pounder N. L., Protat A., Pelon J. (2013) From CloudSat-CALIPSO to EarthCare: Evolution of the DARDAR cloud classification and its comparison to airborne radar-lidar observations, Journal of Geophysical Research-Atmospheres n. 14, pp. 7962-7981. DOI: 10.1002/jgrd.50579 Hogan Robin J., Shonk Jonathan K. P. (2013) Incorporating the Effects of 3D Radiative Transfer in the Presence of Clouds into Two-Stream Multilayer Radiation Schemes, Journal of the Atmospheric Sciences n. 2, pp. 708-724. DOI: 10.1175/JAS-D-12-041.1 Donovan D. P., Barker H. W., Hogan R. J., Wehr T., Eisinger M., Lajas D., Lefebvre A., EarthCARE Phase-B ESA JAXA Mission, Cahalan RF, Fischer J (2013) Scientific Aspects of the Earth Clouds, Aerosols, and Radiation Explorer (EarthCARE) Mission, Radiation Processes in the Atmosphere and Ocean (Irs2012), pp. 444-447. DOI: 10.1063/1.4804802 2012Robin J. Hogan, Ian B. Mason (February 2012) Deterministic Forecasts of Binary Events, Forecast Verification, pp. 31–59. DOI: 10.1002/9781119960003.ch3 Pounder Nicola L., Hogan Robin J., Varnai Tamas, Battaglia Alessandro, Cahalan Robert F. (2012) A Variational Method to Retrieve the Extinction Profile in Liquid Clouds Using Multiple-Field-of-View Lidar, Journal of Applied Meteorology and Climatology n. 2, pp. 350-365. DOI: 10.1175/JAMC-D-10-05007.1 Chiu J. C., Marshak A., Huang C. -H., Varnai T., Hogan R. J., Giles D. M., Holben B. N., O'Connor E. J., Knyazikhin Y., Wiscombe W. J. (2012) Cloud droplet size and liquid water path retrievals from zenith radiance measurements: examples from the Atmospheric Radiation Measurement Program and the Aerosol Robotic Network, Atmospheric Chemistry and Physics n. 21, pp. 10313-10329. DOI: 10.5194/acp-12-10313-2012 Shonk Jonathan K. P., Hogan Robin J., Manners James (2012) Impact of improved representation of horizontal and vertical cloud structure in a climate model, Climate Dynamics n. 11-12, pp. 2365-2376. DOI: 10.1007/s00382-011-1174-2 Hill Peter G., Hogan Robin J., Manners James, Petch Jon C. (2012) Parametrizing the horizontal inhomogeneity of ice water content using CloudSat data products, Quarterly Journal of the Royal Meteorological Society n. 668, pp. 1784-1793. DOI: 10.1002/qj.1893 Hogan Robin J., Tian Lin, Brown Philip R. A., Westbrook Christopher D., Heymsfield Andrew J., Eastment Jon D. (2012) Radar Scattering from Ice Aggregates Using the Horizontally Aligned Oblate Spheroid Approximation, Journal of Applied Meteorology and Climatology n. 3, pp. 655-671. DOI: 10.1175/JAMC-D-11-074.1 Zhao Chuanfeng, Xie Shaocheng, Klein Stephen A., Protat Alain, Shupe Matthew D., McFarlane Sally A., Comstock Jennifer M., Delanoe Julien, Deng Min, Dunn Maureen, Hogan Robin J., Huang Dong, Jensen Michael P., Mace Gerald G., McCoy Renata, O'Connor Ewan J., Turner David D., Wang Zhien (2012) Toward understanding of differences in current cloud retrievals of ARM ground-based measurements, Journal of Geophysical Research-Atmospheres. DOI: 10.1029/2011JD016792 2011Delanoe Julien, Hogan Robin J., Forbes Richard M., Bodas-Salcedo Alejandro, Stein Thorwald H. M. (2011) Evaluation of ice cloud representation in the ECMWF and UK Met Office models using CloudSat and CALIPSO data, Quarterly Journal of the Royal Meteorological Society n. 661, pp. 2064-2078. DOI: 10.1002/qj.882 Stein T. H. M., Parker D. J., Delanoe J., Dixon N. S., Hogan R. J., Knippertz P., Maidment R. I., Marsham J. H. (2011) The vertical cloud structure of the West African monsoon: A 4 year climatology using CloudSat and CALIPSO, Journal of Geophysical Research-Atmospheres. DOI: 10.1029/2011JD016029 Barker H. W., Jerg M. P., Wehr T., Kato S., Donovan D. P., Hogan R. J. (2011) A 3D cloud-construction algorithm for the EarthCARE satellite mission, Quarterly Journal of the Royal Meteorological Society n. 657, pp. 1042-1058. DOI: 10.1002/qj.824 Stein Thorwald H. M., Delanoe Julien, Hogan Robin J. (2011) A Comparison among Four Different Retrieval Methods for Ice-Cloud Properties Using Data from CloudSat, CALIPSO, and MODIS, Journal of Applied Meteorology and Climatology n. 9, pp. 1952-1969. DOI: 10.1175/2011JAMC2646.1 Marenco Franco, Hogan Robin J. (2011) Determining the contribution of volcanic ash and boundary layer aerosol in backscatter lidar returns: A three-component atmosphere approach, Journal of Geophysical Research-Atmospheres. DOI: 10.1029/2010JD015415 Dacre H. F., Grant A. L. M., Hogan R. J., Belcher S. E., Thomson D. J., Devenish B. J., Marenco F., Hort M. C., Haywood J. M., Ansmann A., Mattis I., Clarisse L. (2011) Evaluating the structure and magnitude of the ash plume during the initial phase of the 2010 Eyjafjallajokull eruption using lidar observations and NAME simulations, Journal of Geophysical Research-Atmospheres. DOI: 10.1029/2011JD015608 2010Delanoe Julien, Hogan Robin J. (2010) Combined CloudSat-CALIPSO-MODIS retrievals of the properties of ice clouds, Journal of Geophysical Research-Atmospheres. DOI: 10.1029/2009JD012346 Pearson K. J., Hogan R. J., Allan R. P., Lister G. M. S., Holloway C. E. (2010) Evaluation of the model representation of the evolution of convective systems using satellite observations of outgoing longwave radiation, Journal of Geophysical Research-Atmospheres. DOI: 10.1029/2010JD014265 Shonk Jonathan K. P., Hogan Robin J., Edwards John M., Mace Gerald G. (2010) Effect of improving representation of horizontal and vertical cloud structure on the Earth's global radiation budget. Part I: Review and parametrization, Quarterly Journal of the Royal Meteorological Society n. 650, pp. 1191-1204. DOI: 10.1002/qj.647 O'Connor Ewan J., Illingworth Anthony J., Brooks Ian M., Westbrook Christopher D., Hogan Robin J., Davies Fay, Brooks Barbara J. (2010) 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, Journal of Atmospheric and Oceanic Technology n. 10, pp. 1652-1664. DOI: 10.1175/2010JTECHA1455.1 Westbrook C. D., Illingworth A. J., O'Connor E. J., Hogan R. J. (2010) Doppler lidar measurements of oriented planar ice crystals falling from supercooled and glaciated layer clouds, Quarterly Journal of the Royal Meteorological Society n. 646, pp. 260-276. DOI: 10.1002/qj.528 Shonk Jonathan K. P., Hogan Robin J. (2010) Effect of improving representation of horizontal and vertical cloud structure on the Earth's global radiation budget. Part II: The global effects, Quarterly Journal of the Royal Meteorological Society n. 650, pp. 1205-1215. DOI: 10.1002/qj.646 Hogan Robin J., Ferro Christopher A. T., Jolliffe Ian T., Stephenson David B. (2010) Equitability Revisited: Why the "Equitable Threat Score" Is Not Equitable, Weather and Forecasting n. 2, pp. 710-726. DOI: 10.1175/2009WAF2222350.1 Westbrook C. D., Hogan R. J., O'Connor E. J., Illingworth A. J. (2010) Estimating drizzle drop size and precipitation rate using two-colour lidar measurements, Atmospheric Measurement Techniques n. 3, pp. 671-681. DOI: 10.5194/amt-3-671-2010 Battaglia Alessandro, Tanelli Simone, Kobayashi Satoru, Zrnic Dusan, Hogan Robin J., Simmer Clemens (2010) Multiple-scattering in radar systems: A review, Journal of Quantitative Spectroscopy & Radiative Transfer n. 6, pp. 917-947. DOI: 10.1016/j.jqsrt.2009.11.024 Hogan Robin J. (2010) The Full-Spectrum Correlated-k Method for Longwave Atmospheric Radiative Transfer Using an Effective Planck Function, Journal of the Atmospheric Sciences n. 6, pp. 2086-2100. DOI: 10.1175/2010JAS3202.1 Bouniol Dominique, Protat Alain, Delanoe Julien, Pelon Jacques, Piriou Jean-Marcel, Bouyssel Francois, Tompkins Adrian M., Wilson Damian R., Morille Yohann, Haeffelin Martial, O'Connor Ewan J., Hogan Robin J., Illingworth Anthony J., Donovan David P., Baltink Henk-Klein (2010) Using Continuous Ground-Based Radar and Lidar Measurements for Evaluating the Representation of Clouds in Four Operational Models, Journal of Applied Meteorology and Climatology n. 9, pp. 1971-1991. DOI: 10.1175/2010JAMC2333.1 Wilkinson Jonathan M., Hogan Robin J., Illingworth Anthony J. (2010) Using Doppler radar with a simple explicit microphysics model to diagnose problems with ice sublimation depth-scales in forecast models, Quarterly Journal of the Royal Meteorological Society n. 653, pp. 2094-2108. DOI: 10.1002/qj.698 2009Hogan Robin J., Grant Alan L. M., Illingworth Anthony J., Pearson Guy N., O'Connor Ewan J. (2009) Vertical velocity variance and skewness in clear and cloud-topped boundary layers as revealed by Doppler lidar, Quarterly Journal of the Royal Meteorological Society n. 640, pp. 635-643. DOI: 10.1002/qj.413 Barrett Andrew I., Hogan Robin J., O'Connor Ewan J. (2009) Evaluating forecasts of the evolution of the cloudy boundary layer using diurnal composites of radar and lidar observations, Geophysical Research Letters. DOI: 10.1029/2009GL038919 Harrison R. G., Heath A. M., Hogan R. J., Rogers G. W. (2009) Comparison of balloon-carried atmospheric motion sensors with Doppler lidar turbulence measurements, Review of Scientific Instruments n. 2. DOI: 10.1063/1.3086432 Hogan Robin J., O'Connor Ewan J., Illingworth Anthony J. (2009) Verification of cloud-fraction forecasts, Quarterly Journal of the Royal Meteorological Society n. 643, pp. 1494-1511. DOI: 10.1002/qj.481 Chalmers Nicky, Hogan Robin J., Allan Richard P., Nakajima T, Yamasoe MA (2009) Investigating the Radiative Impact Clouds Using Retrieved Properties to Classify Cloud Type, Current Problems in Atmospheric Radiation (Irs 2008), pp. 525-528. 2008Wilkinson J.M., Robin Hogan, A.J. Illingworth, Angela Benedetti (February 2008) Use of a lidar forward model for global comparisons of cloud fraction between the ICESat lidar and the ECMWF model., ECMWF Technical Memorandum n. 555, pp. 23. DOI: 10.21957/to8saqzak Hogan Robin J. (2008) Fast Lidar and Radar Multiple-Scattering Models. Part I: Small-Angle Scattering Using the Photon Variance-Covariance Method, Journal of the Atmospheric Sciences n. 12, pp. 3621-3635. DOI: 10.1175/2008JAS2642.1 Hogan Robin J., Battaglia Alessandro (2008) Fast Lidar and Radar Multiple-Scattering Models. Part II: Wide-Angle Scattering Using the Time-Dependent Two-Stream Approximation, Journal of the Atmospheric Sciences n. 12, pp. 3636-3651. DOI: 10.1175/2008JAS2643.1 Dunbar T. M., Hanert E., Hogan R. J. (2008) A one-dimensional finite-element boundary-layer model with a vertical adaptive grid, Boundary-Layer Meteorology n. 3, pp. 459-472. DOI: 10.1007/s10546-008-9297-7 Delanoe Julien, Hogan Robin J. (2008) A variational scheme for retrieving ice cloud properties from combined radar, lidar, and infrared radiometer, Journal of Geophysical Research-Atmospheres n. D7. DOI: 10.1029/2007JD009000 Hogan Robin J., Illingworth Anthony J., Halladay Kate (2008) Estimating mass and momentum fluxes in a line of cumulonimbus using a single high-resolution Doppler radar, Quarterly Journal of the Royal Meteorological Society n. 634, pp. 1127-1141. DOI: 10.1002/qj.286 Harrison R. Giles, Chalmers Nicky, Hogan Robin J. (2008) Retrospective cloud determinations from surface solar radiation measurements, Atmospheric Research n. 1, pp. 54-62. DOI: 10.1016/j.atmosres.2008.04.001 Zhong Wenyi, Hogan Robin J., Haigh Joanna D. (2008) Three-dimensional radiative transfer in midlatitude cirrus clouds, Quarterly Journal of the Royal Meteorological Society n. 630, pp. 199-215. DOI: 10.1002/qj.182 Zhong Wenyi, Hogan Robin J., Haigh Joanna D. (2008) Three-dimensional radiative transfer in midlatitude cirrus clouds (vol 134, pg 199, 2008), Quarterly Journal of the Royal Meteorological Society n. 633, pp. 1065-1066. DOI: 10.1002/qj.266 Heymsfield Andrew J., Protat Alain, Austin Richard T., Bouniol Dominique, Hogan Robin J., Delanoe Julien, Okamoto Hajime, Sato Kaori, van Zadelhoff Gerd-Jan, Donovan David P., Wang Zhien (2008) Testing IWC retrieval methods using radar and ancillary measurements with in situ data, Journal of Applied Meteorology and Climatology n. 1, pp. 135-163. DOI: 10.1175/2007JAMC1606.1 Westbrook Christopher David, Hogan Robin J., Illingworth Anthony J. (2008) The capacitance of pristine ice crystals and aggregate snowflakes, Journal of the Atmospheric Sciences n. 1, pp. 206-219. DOI: 10.1175/2007JAS2315.1 Shonk Jonathan K. P., Hogan Robin J. (2008) Tripleclouds: An efficient method for representing horizontal cloud inhomogeneity in 1D radiation schemes by using three regions at each height, Journal of Climate n. 11, pp. 2352-2370. DOI: 10.1175/2007JCLI1940.1 Wilkinson Jonathan M., Hogan Robin J., Illingworth Anthony J., Benedetti Angela (2008) Use of a Lidar Forward Model for Global Comparisons of Cloud Fraction between the ICESat Lidar and the ECMWF Model, Monthly Weather Review n. 10, pp. 3742-3759. DOI: 10.1175/2008MWR2309.1 2007D. Bouniol, 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, Robin Hogan, A.J. Illingworth (December 2007) Evaluating cloud occurrence in the ECMWF integrated forecast system and three other operational forecasts models using long-term ground-based radar and lidar measurements., ECMWF Technical Memorandum n. 526, pp. 16. DOI: 10.21957/wv8w1sryh D. Bouniol, 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, Robin Hogan, A.J. Illingworth (December 2007) Evaluating cloud fraction and ice water content in the ECMWF integrated forecast system and three other operational forecasts models using long-term ground-based radar and lidar measurements., ECMWF Technical Memorandum n. 527, pp. 23. DOI: 10.21957/gyrfdolp3
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