Below are the slides from the workshop. A pdf of the schedule can be found here:
Monday 15 July 2019
Monday’s Poster Presentations
101 | A two-fluid single-column model of the convective boundary layer: improvements to and physics John Thuburn and Georgios Efstathiou |
102 | Parameterization of the perturbation pressure in a unified turbulence-convection framework Jia He, Yair Cohen and Tapio Schneider |
103 | Exploring the sensitivity of convection to moisture using the idealised UM Sally Lavender, Alison Stirling, Rachel Stratton and Michael Whitall |
104 | Unified parameterization of boundary layer clouds and turbulence based on two prognostic turbulence energies Ivan Bastak Duran and Juerg Schmidli |
105 | The role of the cold pool scheme in convective memory in a hierarchy of models, and its impact on precipitation frequency Maxime Colin, Jean-Yves Grandpeix, Sandrine Bony, Steven Sherwood |
106 | Linking stochasticity of convection to large-scale vertical velocity to improve Indian summer monsoon simulation in the NCAR CAM5 Yong Wang, Guang Zhang and Yiquan Jiang |
107 | The balance and interaction of convective parametrization and microphysics scheme Taro Anzai, Masashi Ujiie and Hiroshi Kusabiraki |
108 | Simulating clouds using a massively parallel parcel-based framework Steven Böing, Gordon Gibb, Nick Brown, Michèle Weiland and David Dritschel |
109 | Evaluation of heavy rain events over India during the southwest summer monsoon using high resolution Global Forecast System suite (GFS T1534 and GEFS T1534) Snehlata Tirkey, Parthasarathi Mukhopadhyay, R Phani Murali Krishna, Medha Deshpande, Malay Ganai, Tanmoy Goswami, Sahadat Sarkar, Radhika Kanase, Mata Mahakur and Kumar Roy |
110 | Cold pools and the organization of tropical convection in global cloud-system resolving simulations Steven Krueger |
111 | Prognostic turbulence parametrization with sub-filter cloud scheme applied to grey-zone convection Thomas Lloyd Webb and Peter Clark |
Tuesday 16 July 2019
Chair: Peter Clark | |
09:00 – 14:35 | Turbulence and EDMF |
09:00 | A statistical approach to evaluate parametrised turbulence in convection-permitting models using radar-retrieved eddy dissipation rates
Matthew Feist, Peter Clark, Humphrey Lean, Thorwald Stein, Chris Westbrook and Carol Halliwell |
09:20 | Turbulence Kinetic Energy – Scalar Variance Mixing Scheme for NWP Models
Dmitrii Mironov and Ekaterina Machulskaya |
09:40 | Impact of turbulence representation on deep convective clouds
Didier Ricard, Christine Lac, Nicolas Rochetin, Clément Strauss and Antoine Verrelle |
10:00 | Unity, fidelity, and simplicity in parameterizations: The example of momentum fluxes
Vincent Larson, Invited |
10:35 – 11:05 | Coffee and Tea Break |
Chair: John Thuburn | |
11:05 | Performance of a 3D, second order turbulence scheme in the turbulence grey-zone
Carol Halliwell and Peter Clark |
11:25 | Using updraft covariances for entrainment closures in an extended eddy diffusivity/mass flux model
Yair Cohen, Anna Jaruga, Ignacio Lopez, Jia He, Charles Kawczynski and Tapio Schneider |
11:45 | Using LES as a non-hydrostatic testing ground for designing scale-adaptive and stochastic parameterizations for the grey zone
Roel Neggers, Philipp Griewank and Thijs Heus |
12:05 | Scale-aware tests of the MYNN-EDMF PBL and shallow cumulus scheme with a novel framework
Wayne Angevine and Joseph Olson |
12:25 – 12:35 | 30-second Lightning Lectures by Poster Presenters |
12:35 – 14:25 | Lunch and Posters |
Chair: Adrian Lock | |
14:25 – 15:05 | Multi-fluids approaches |
14:25 | Multi-fluid Modelling of Convection
Hilary Weller, William McIntyre and Dan Shi |
14:45 | Identifying coherent structures by optimising a two-fluid representation of shallow convection
Georgios Efstathiou and John Thuburn |
15:05 – 17:30 | Updraught/downdraught dynamics |
15:05 | What is the basic structural unit of cumulus convection, and why does it matter?
Hugh Morrison, Invited |
Chair: Leo Donner | |
16:10 | A simple model of convective drafts accounting for the perturbation pressure term
Jean-Marcel Piriou, Julien Leger, Jean-Philippe Lafore and Jean-François Guérémy |
16:30 | Dynamics of subsiding shells in actively growing clouds with vertical updrafts
Vishnu Nair, Thijs Heus and Maarten van Reeuwijk |
16:50 | Detecting thermals in deep convection
Liam Till, Thorwald Stein, Peter Clark and Carol Halliwell |
17:10 | Entrainment and its dependence on convective organization and large-scale state in convection-permitting simulations
Tobias Becker and Cathy Hohenegger |
17:30 – 17:50 | Returning to the large scale (Part I) |
17:30 | A physical mechanism for the relationship between climate sensitivity, low-level cloud feedback and double-ITCZ bias
Mark Webb and Adrian Lock |
Tuesday’s Poster Presentations
201 | Towards improving the representation of divergent-type modes of tropical variability in the NOAA GFS Stefan Tulich and Jian-Wen Bao |
202 | The Subgrid Convection and Turbulent Mixing Parameterizations in the Grey Zone Jian-Wen Bao |
203 | Buoyancy-Driven Entrainment in Dry Thermals Brett McKim, Nadir Jeevanjee and Daniel Lecoanet |
204 | Assessment of model tendencies in the transition towards resolved deep convection Luc Gerard |
205 | Convectively coupled equatorial wave simulations using the ECMWF IFS and the NOAA GFS cumulus convection schemes in the NOAA GFS model Bengtsson, L., Dias, J., Gehne, M., Bechtold, P., Whitaker, J., Bao., J-W., Magnusson, L., Michelson, S., Pegion, P., Tulich, S., and Kiladis., G.N. |
206 | Enhancing model convective precipitation in the presence of lightning José Davi Moura, Sin-Chan Chou and Osmar Pinto |
207 | Wind shear and deep moist convection Megan Bickle, John Marsham, Andrew Ross and Stephen Griffiths |
208 | The influence of the urban surface on boundary-layer cloud formation: from observing processes to model evaluation Natalie Theeuwes, Janet Barlow, Ryan Teuling, Sue Grimmond, Simone Kotthaus and Ian Boutle |
209 | Exploring the consequences of nearest neighbour interaction in convective parametrisations Tobias Goecke |
210 | Evaluation of a modified convection scheme and its impact on systematic SST biases using initialized ensemble seasonal hindcasts Hsi-Yen Ma, Cheska Siongco, Stephen Klein, Shaocheng Xie, Alicia Karspeck, Kevin Raeder, Jeffrey Anderson, Guang Zhang and Xiaoliang Song |
Wednesday 17 July 2019
Chair: Natalie Harvey | |
09:00 – 10:20 | Constraints on convection permitting models |
09:00 | Radiative-convective equilibrium across the gray zone: Bulk convergence with resolution
Todd Jones and Carol Halliwell |
09:20 | The representation of convection in the Unified Model at 1.5km to 50m gridlength
Kirsty Hanley and Humphrey Lean |
09:40 | Biases in the diurnal cycle of convection in convection permitting configurations of the UM in different parts of the world.
Humphrey Lean, Kirsty Hanley, Stuart Webster, Will Keat, Thorwald Stein, Todd Lane, Martin Jucker, Elizabeth Kendon and Giorgia Fosser |
10:00 | Slantwise Convection: Dynamics and Sensitivity to Resolution in Numerical Modeling
Ting-Chen Chen, M. K. Yau and Daniel Kirshbaum |
10:20 – 10:40 | Coffee and Tea Break |
Chair: Michael Herzog | |
10:40 – 11:35 | Machine learning for understanding organisation |
10:40 | Machine Learning: Building parameterizations and understanding clouds
Stephan Rasp, Invited |
11:15 | Unsupervised classification of convective organisation with Deep Learning
Leif Denby |
11:35 – 12:15 | Grey zone |
11:35 | The Grey Zone Project: an intercomparison project of scale-aware approaches to turbulence and convection
Lorenzo Tomassini, Rachel Honnert, Georgios Efstathiou, Adrian Lock, Stephan de Roode and Pier Siebesma |
11:55 | AROME model in the grey zone and Grey Zone Project II
Rachel Honnert, Ghislain Faure and Fleur Couvreux |
13:45 – 15:00 | Discussion Sessions (summaries at the bottom of the page) |
15:15 – 16:45 | Grey Zone Project Meeting |
Wednesday’s Poster Presentations
301 | How is a single updraft influenced by other clouds in a convective ensemble? Anne Barber, Steven Boeing, Andrew Ross, Alan Blyth and Alison Stirling |
302 | In search of a suitable scheme for modelling grey zone convection with the multi-fluid approach Will McIntyre, Hilary Weller, Chris Holloway and Dan Shipley |
303 | Multi-fluid modelling of Rayleigh-Benard convection at grey-zone resolutions Daniel Shipley, Hilary Weller, Peter Clark, Tom Webb and Will McIntyre |
304 | The Non-Traditional Coriolis Force and Convective Clouds Matthew Igel and Joseph Biello |
305 | Differentiation between dynamical and physical contributions to sub-grid process at grey zone Lijuan Li |
306 | Developing the RAP/HRRR Physics Suite to Improve Shallow-Cumulus Structures Across the Greyzone Joseph Olson, Jaymes Kenyon and Wayne Angevine |
307 | Evaluation of the diurnal precipitation cycle in the New Tiedtke scheme May Wong, Glen Romine and Chris Snyder |
308 | Evaluating size-dependent parametrized plume profiles with Large-Eddy-Simulations of shallow convection Philipp Griewank, Neggers and Heus |
309 | The Impact of Variability in Aerosol Concentrations on the Convective Mixed-Phase Clouds in the Arctic Jan Chylik, Roel Neggers and Stephan Mertes |
Thursday 18 July 2019
Chair: Hilary Weller | |
09:00 – 11:20 | Spectral approaches |
09:00 | Evaluation of bulk mass flux formulation using large-eddy simulations
Jian-Feng Gu, Robert Plant, Christopher Holloway, Todd Jones, Alison Stirling, Peter Clark and Steven Woolnough. |
09:20 | Coexistence of subgrid-scale convective processes within a GCM grid-cell: The picture inferred from a large-eddy simulation
Catherine Rio, Frédéric Hourdin, Jean-Yves Grandpeix, Caroline Müller, Abdoul- Khadre Traore and Nicolas Rochetin. |
09:40 | Spectral cumulus parameterization based on cloud-resolving model and its application to AGCMs
Yuya Baba |
10:00 | Stochastic plume ensembles for a unified shallow-deep mass flux cumulus parameterization in the single column Community Earth System Model (CESM)
Bidyut Bikash Goswami, Boualem Khouider, Phani Murali Krishna Ravuri and Andrew Majda |
10:40 | Single-column model experiments with the MetUM coupled to a stochastic multi-cloud model
Rob Warren and Christian Jakob |
10:20 – 10:40 | Coffee and Tea Break |
Chair: Humphrey Lean | |
11:00 | First Results from Coupling the Convective Cloud Field Model to the Met Office’s Unified Model
Eimear Dunne, Michael Herzog, Maria Russo and Luke Abraham. |
11:20 – 12:35 | Convective Organisation |
11:20 | Convective organization: should we parameterize it?
Cathy Hohenegger, Invited |
11:55 | Evaluating the bias of South China Sea summer monsoon precipitation associated with fast physical processes using climate model hindcast approach
Wei-Ting Chen, Chien-Ming Wu and Hsi-Yen Ma |
12:15 | Using convective aggregation to inform convection parametrization development
Christopher Holloway and Todd Jones |
12:35 – 12:45 | 30-second Lightning Lectures by Poster Presenters |
12:45 – 14:30 | Lunch and Posters |
Chair: Andrew Ross | |
14:30 – 17:00 | Cold pools and triggering |
14:30 | The simulation of the diurnal cycle of deep convection over land in a new Met Office Cloud-Resolving model
Chimene Daleu, Natalie Harvey, Robert Plant and Steven Woolnough |
14:50 | Development and tests of a cold-pool scheme in the Met Office Unified Model
Gabriel Rooney |
15:10 | Cold pool driven convection initiation and missing aspects in km-scale models
Mirjam Hirt, Sophia Schäfer, Julien Savre and George Craig |
15:30 | Coupling cold pools with shallow convection in LMDZ6
Ludovic Touze-Peiffer and Jean-Yves Grandpeix |
15:50 – 16:20 | Coffee and Tea Break |
Chair: Bob Plant | |
16:20 | Diurnal Cycle of Precipitation Simulated by the E3SM Atmosphere Model Version 1 (EAMv1) with a Revised Convective Trigger
Shaocheng Xie |
16:40 | A stochastic triggering parameterization for deep convection in LMDZ
Nicolas Rochetin, Jean-Yves Grandpeix, Fleur Couvreux, Catherine Rio and Frederic Hourdin |
17:00 – 17:35 | Evaluation |
17:00 | Precipitation-buoyancy relationships and their consequences for fundamentals of precipitation statistics
David Neelin, Invited, Remote Presentation |
Thursday’s Poster Presentations
401 | Kurnell Storm (2015) simulation with high resolution ACCESS models Hongyan Zhu and Alain Protat |
402 | Understanding the impact of surface heterogeneity on the diurnal cycle of deep convection Natalie Harvey, Chimene Daleu, Steven Woolnough and Bob Plant |
403 | A Stochastic Unified Convection Scheme (UNICON) Jihoon Shin and Sungsu Park |
404 | A composite study of cloud structure and its implication for the parameterization of vertical fluxes Jian-Feng Gu, Robert Plant, Christopher Holloway and Todd Jones |
405 | Using WRF Single Column Model as a testbed for convective parameterization Yi-Ling Hwong and Steve Sherwood |
406 | The genesis of convective clouds Leif Denby, Steven Boeing, Doug Parker and Mike Whitall |
407 | Recent Approach toward More Physically-based Convection Scheme in the JMA Operational Global Model Akira Shimokobe, Masashi Ujiie, Hitoshi Yonehara, Masayuki Nakagawa, Kei Saitou, Ryoji Nagasawa, Hitoshi Sato and Manabu Ueda |
408 | The effects of switching-off parameterized convection at grey-zone resolutions Jesus Vergara-Temprado, Nikolina Ban and Christoph Schaer |
409 | NWP forecast of hydrological cycle in FV3 with a different convection scheme Haiqin Li, Georg Grell, Saulo Freitas, Hannah Barnes and Keren Rosado |
410 | A study on the relationship between stable water isotopes and precipitation characteristics in the tropics using NICAM-isotope Yuki Takano and Yikari N. Takano |
Friday 19 July 2019
Chair: Hannah Barnes | |
09:00 – 11:20 | Evaluation, continued |
09:00 | Convection over and surrounding an idealised island
Rachel Stratton |
09:20 | Cloud Trails: Are the clouds important?
Michael Johnston, Christopher Holloway and Robert Plant |
09:40 | Evaluation of convective precipitation using space-borne radar observation
Kengo Matsubayashi |
10:00 | New Paradigm for Organized Convection Parameterization in GCMs
Mitchell Moncrieff |
10:20 – 10:40 | Coffee and Tea Break |
Chair: Alison Stirling | |
10:40 | Object-Based Precipitation System Bias in Grey Zone Simulation: A Preliminary Study for Unified Parameterization
Chun-Yian Su, Chien-Ming Wu, Wei-Ting Chen and Jen-Her Chen |
11:00 | Diagnosing Convection in Extra-Tropical Cyclones in GFDL AM4
Leo Donner, Catherine M Naud, James F Booth, Charles Seman, Ming Zhao, Huan Guo and Yi Ming |
11:20 – 11:40 | Returning to the large scale (Part II) |
11:20 | The role of convective schemes in regulating lapse rates and midlatitude jet latitudes
Steven Sherwood and David Fuchs |
11:40 – 12:00 | Discussion (summaries at the bottom of the page) |
12:00 – 14:00 | Lunch |
14:00 – 16:30 | Wrap-up Discussions (summaries at the bottom of the page) |
Summaries on the discussion groups are here: convection playground, nitty gritty details, grey zone, current challenges and machine learning.