Improvement and calibration of clouds in models
Centre International de Conférences - Météo-France - Toulouse - France April 12-16, 2021
CIC meetings
 
 
abstracts/presentations/recordings
  CIC meetings
 

Monday, April 12 LES, Observations and Parameterizations (I) Session
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Tuesday, April 13 Tuning and Sensitivity Session
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Wednesday, April 14 Cloud Radiative Effect Session
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Thursday, April 15 LES, Observations and Parameterizations (II) Session
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Friday, April 16 Future of Clouds in Models Session
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Monday, April 12
 
  14:20-14:30 Introduction to the conference.
Fleur Couvreux
 
     
  14:30-15:00 Results of the High-Tune project.
Frédéric Hourdin & Fleur Couvreux
 
  15:00-15:15 Toward Lagrangian simulations of EUREC4A/ATOMIC cloud regimes.
Steven Boeing
 
  15:15-15:30 Toward realistic cloud transitions during cold air outbreaks in ModelE.
Florian Tornow
 
  15:30-15:45 Organization development in shallow cumulus precipitating convection.
Oumaima Lamaakel
 
  15:55-16:10 The strong impact of weak horizontal convergence on continental shallow convection.
Marcin Kurowski
 
  16:10-16:15 Interactions between the Amazonian rainforest and cumuli clouds: A large-eddy simulation, high-resolution ECMWF-IFS and observational intercomparison study.
Jordi Vila
 
  16:15-16:20 Constraining Stochastic Parametrisation Schemes using High-Resolution Model Simulations.
Hannah Christensen
 
  16:20-16:25 Continental shallow cumulus clouds in E3SM parameterizations against ARM observations and LES.
Yunyan Zhang
 
  16:25-16:30 On the role of aerosol characteristics and parameterization schemes on Arctic mixed-phase clouds.
Luisa Ickes
 
  16:30-16:45 A physically-based bimodal diagnostic cloud scheme: description and evaluation.
Kwinten Van Weverberg
 
  16:45-17:00 Discussion

 
     
  17:00-17:15 Prediction of the bulk liquid fraction of mixed-phase particles in the Predicted Particle Properties (P3) microphysics scheme.
Mélissa Cholette
 
  17:15-17:30 CLUBB+MF in CAM6: implementation and evaluation of shallow convection cases.
Mikael K. Witte
 
  17:30-17:45 Towards operational implementation: A stochastic shallow convection scheme.
Maike Ahlgrimm
 
  17:55-18:00 Improved parametrization of the boundary layer in Harmonie-Arome with a focus on low clouds.
Wim de Rooy
 
  18:00-18:05 Local impact of stochastic shallow convection on clouds and precipitation in the tropical Atlantic.
Mirjana Sakradzija
 
  18:05-18:10 Impacts of a change in deep convection scheme on the ARPEGE data assimilation system.
Antoine Hubans
 
  18:10-18:15 A Unified Eddy-Diffusivity/Mass-Flux Approach for Modeling Atmospheric Convection.
Kay Suselj
 
  18:15-18:45 Discusssion

 
     
 
Tuesday, April 13
 
  9:15-9:30 Synthesis of discussion from the previous day.
Daniel Klocke
     
 
  9:30-9:45 A machine learning assisted stochastic cloud population model as a parameterization of cumulus convection.
Samson Hagos
 
  9:45-10:00 Development of a physically-based parameterization of the raindrop formation processes through machine-learning.
Azusa Takeishi
 
  10:00-10:15 Assessing calibration issues and intrinsic limits of a convection parameterization using machine learning.
Romain Roehrig
 
  10:15-10:30 Machine-learned atmospheric optical properties for radiative transfer computations.
Menno Veerman
 
  10:40-10:55 Parameterization and tuning of cloud and precipitation overlap in LMDz.
Ludovic Touze-Peiffer
 
  10:55-11:10 Characterising Convection Schemes Using Their Linearised Responses to Convective Tendency Perturbations.
Yi-Ling Hwong
 
  11:10-11:15 Sensitivity of observable output of modeled microphysics to stochastically perturbed parameters.
Tomislava Vukicevic
 
  11:15-11:20 A Hybrid Deep Learning CNN-LSTM Model for Predicting Monthly Rainfall Over Japan.
Paul Adigun
 
   
  11:20-11:25 Tropical free-tropospheric humidity differences in global storm-resolving models.
Theresa Lang
 
  11:25-11:30 Microphysical sensitivities in global storm-resolving simulations (SRMs).
Ann Kristin Naumann
 
 
  11:30-11:35 Impact of middle atmospheric humidity on boundary layer turbulence and clouds.
Neelam Namadev Malap
 
  11:35-11:40 Interpretable Machine Learning and Remote Sensing for Cloud Detection and Classification.
Thomas Chen
 
   
  11:50-12:20 Climate model development and the role of machine learning.
Daniel Williamson
 
  12:20-12:50 Discussion

 
     
 
Wednesday, April 14
 
  14:30-14:45 Synthesis of discussion from previous day.
Frédéric Hourdin
     
 
  14:45-15:15 Representing 3D effects in atmospheric radiation schemes.
Robin Hogan
 
  15:15-15:30 Addressing radiation and cloud uncertainties with the new radiation scheme ecRad in ICON.
Sophia Schäfer
 
  15:30-15:45 Process-based climate model development harnessing machine learning: III. The Representation of Cumulus Geometry and their 3D Radiative Effects.
Najda Villefranque
 
  16:00-16:15 A LES-benchmark case for surface solar irradiance variability under shallow cumulus.
Chiel van Heerwaarden
 
  16:15-16:30 To what extent does the radiative effect of low-level clouds depend on an accurate description of their vertical structure?
Raphaël Lebrun
 
  16:30-16:45 Introducing cloud horizontal overlap at NWP scales (1-10 km) in a fast 3D radiative transfer model.
Mihail Manev
 
  16:45-17:00 The Contributions of Shear and Turbulence to Cloud Overlap for Cumulus Clouds.
Thijs Heus
 
  17:00-17h15 Uncertainty of shortwave cloud radiative impact due to the parameterization of liquid cloud optical properties.
Erfan Jahangir
 
  17:15-17:30 Evaluation of low-level marine tropical clouds in CMIP6 models: the 'too few too bright' bias.
Dimitra Konsta
 
  17:45-17:50 Increasing resolution and resolving convection improves the simulation of cloud-radiative effects over the North Atlantic.
Fabian Senf
 
  17:50-17:55 Development of a Fast Three-Dimensional Dynamic Radiative Transfer Solver for Numerical Weather Prediction Models.
Richard Maier
 
  17:55-18:00 Emergent Constraints on Regional Cloud Feedbacks.
Nicholas James Lutsko
 
  18:00-18:05 Effects of different cloud overlapping parameters on simulated total cloud fraction over the globe and East Asian region.
Haibo Wang
 
  18:05-18:30 Discusssion

 
     
 
Thursday, April 15
 
  9:00-9:15 Synthesis of discussion from previous day.
Fabian Jakub
     
 
  9:15-9:30 Convective momentum transport through the subtropical shallow convection in LES simulations.
Vishal Dixit
 
  9:30-9:45 Turbulent effects and dynamics of the cloud-environment interface in a LES of a growing cumulus congestus.
Clément Strauss
 
  9:45-10h00 Improved Ice Aggregation Formulation in a Two-Moment Microphysics Scheme.
Markus Karrer
 
  10:00-10:15 Process-oriented Evaluation of cloud parameterizations using a Cloud System Concept.
Claudia J. Stubenrauch
 
  10:25-10:30 Improving convection in LES through detailed land-surface modelling.
Bart J.H. van Stratum
 
  10:30-10:35 Application of Remote Sensing to Study Dynamical and Morphological Characteristics of Meso-Scale Convective Systems to Develop 'Thunderstorms Numerical Prediction Model (TNPM)'Over Tropics'.
Virendra Kumar Goswami
 
  10:35-10:40 Evaluation and improvement of cloud and precipitation processes of NICAM with ULTIMATE.
Masaki Satoh
 
  10:40-10:45 Aerosol-cloud-turbulence interactions in well-coupled Arctic boundary layers over open water.
Jan Chylik
 
  10:45-11:00 Realities of developing and improving parameterizations related to clouds in global climate models.
Hideaki Kawai
 
  11:00-11:15 Sensitivity of ice formation processes in the ice modes scheme.
Tim Lüttmer
 
  11:15-11:30 A new diagnostic cloud scheme for heterogeneous moist parameterisations.
Martin Köhler
 
  11:30-11:45 Improvement of a representation of mixed-phase clouds, and its impact on a global cloud-system-resolving simulation.
Akira T. Noda
 
 
  11:45-11:50 Cloud microphysical parameterization and Orography influence on extreme rainfall event of Kerala (2018).
Sandeep Pattnaik
 
  11:50-11:55 A cold pool perturbation scheme to improve convective initiation in convection-permitting models.
Mirjam Hirt
 
  11:55-12:00 Recent developments in prognostic physics in ARPEGE-Climate: Turbulence in the presence of convection and discretization of convective vertical velocity in PCMT.
Jean-François Guérémy
 
  12:00-12:05 Persistence behaviour of heat and momentum fluxes in convective surface layer turbulence.
Subharthi Chowdhuri
 
  12:15-12:45 Using LES and observations to inform the representation of convective organization and memory in next-generation Earth System Models.
Roel Neggers
 
  12:45-13:00 Discusssion

 
     
 
Friday, April 16
 
  14:15-14:30 Synthesis of discussion from previous day.
Fleur Couvreux
     
 
  14:30-14:45 Comparing convective memory in different schemes with imposed fixed RCE state.
Maxime Colin
 
  14:45-15:00 Memory properties in cloud-resolving simulations of the diurnal cycle of deep convection.
Chimène Laure Daleu
 
  15:00-15:15 Object-oriented analysis of coherent boundary-layer structures in high-resolution simulations.
Florent Brient
 
  15:15-15:30 Pressure Drag for Shallow Cumulus Clouds: From Thermals to the Cloud Ensemble.
Jian-Feng Gu
 
  15:30-15:45 Some challenges for the future representation of clouds in global models.
Richard Michael Forbes
 
  15:55-16:25 CliMA's Approach Toward Data-Informed Climate Models With Quantified Uncertainties.
Tapio Schneider
 
  16:25-16:40 On the use of Emulators, built from Ensembles of Large Eddy Simulations, to study Clouds and Aerosol-Cloud Interactions.
Graham Feingold
 
  16:40-16:55 Science and Deployment Plan for the Department of Energy (DOE) 3rd Atmospheric Radiation Measurement (ARM) Mobile Facility: Coupled Observational-Modeling Studies of Land-Aerosol-Cloud Interactions in the Southeastern United States.
Chongai Kuang
 
  16:55-17:10 How semi-automatic tuning tools can help parameterization improvement: Application to the sub-grid water distribution of a statistical cloud scheme.
Louis d'Alençon
 
  17:20-17:25 Characterising the shape, size and orientation of cloud-feeding coherent boundary layer structures.
Leif Denby
 
  17:25-17:30 A new terrain-following vertical coordinate formulation to improve the simulation of fog and low stratus in atmospheric models.
Stephanie Westerhuis
 
  17:30-17:35 Higher Vertical Resolution for Select Physical Processes in the Energy Exascale Earth System Model (E3SM).
Hsiang-He Lee
 
  17:35-17:40 Vertical grid-refinement for stratocumulus clouds in ECHAM-HAM.
David Neubauer
 
  17:15-17:45 Final discusssion

 
     
 
 
 
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