Workshop on parametrization of clouds and precipitation across model resolutions

The ECMWF Workshop on Parametrization of clouds and precipitation across model resolutions was held from Monday 5 to Thursday 8 November 2012.

Description

The ECMWF strategy for the development of physical parametrizations over the next decade places particular emphasis on moist physics and there are many questions of how best to represent the hydrological, radiative and dynamical impacts of cloud and precipitation across an increasing range of model resolutions.

This workshop discussed latest advances in understanding some of the key issues in parameterizing cloud and precipitation processes. The aim is to provide advice on the direction of future cloud scheme developments, with a particular emphasis on NWP as resolution increases from the 'large-scale' towards the 'convective-scale'. Such issues include:

  • The appropriate level of complexity and numerical formulation of microphysics.
  • How to represent the impacts of sub-grid heterogeneity efficiently and
  • consistently across the range of model resolutions.
  • How to get the most benefit from observations with an emphasis on evaluating and constraining cloud and precipitation processes.

Programme

PDF iconAnnex I: Posters

PDF iconAnnex II: Participants

PDF iconAnnex III: Programme

Presentations

Monday 5 November  

Overview and cloud parametrization issues for ECMWF

Richard Forbes (ECMWF)

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Parametrization of microphysics
 

GASS Microphysics comparison project

Adrian Hill (Met Office)

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Toward a unified microphysics scheme for NWP in Canada

Peter Yau (McGill University)

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Small scales do not forget!

Axel Seifert (DWD)

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High-resolution winter simulations over the Colorado Rockies: Sensitivity to microphysics parameterizations

Greg Thompson (NCAR)

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Tuesday 6 November  

Representing mixed-phase and ice phase microphysics

Paul Field (Met Office)

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Cloud and microphysical schemes in Arome and Arpege models

Yann Seity and Christine Lac (MeteoFrance)

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Representing cloud-aerosol interactions in GCMs

Ulrike Lohmann (ETHZ)

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Representing sub-grid heterogeneity
 

Implementing a statistical cloud scheme into the CAM climate model

Vincent Larson (Univ. Wisconsin-Milwaukee)

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Sub-grid cloud parametrization issues in MetUM

Cyril Morcrette (Met Office)

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Evaluating parameterisations of subgrid scale variability with satellite data

Johannes Quaas (Univ. Leipzig)

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Extending a PDF cloud scheme to accommodate cirrus physics

Ulrike Burkhardt (DLR)

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Sub-grid cloud-radiation interaction

Robert Pincus (NOAA-ESRL)

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Towards scale-adaptivity and model unification in the representation of moist convection

Roel Neggers (KNMI)

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Microphysics and convection in the "grey zone"

Luc Gerard (RMI Belgium)

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Wednesday 7 November  
Constraining cloud and precipitation parametrization with observations
 

Evaluating the ECMWF model's clouds and radiation with ARM observations

Maike Ahlgrimm (ECMWF)

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Aircraft observations of ice microphysics

Andrew Heymsfield (NCAR)

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Evaluation and improvement of cloud schemes using radar and lidar observations

Robin Hogan (Reading)

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Using CALIPSO for model validation

Hélène Chepfer (LMD/IPSL)

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Using CloudSat and the A-Train for model validation

Matt Lebsock (JPL)

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Working groups

PDF iconWorking group reports

Proceedings

Evaluating the ECMWF model's clouds and radiation with ARM observations

Maike Ahlgrimm (ECMWF)

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Evaluation and improvement of cloud schemes using radar and lidar observations

Robin Hogan (Reading)

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Extending a PDF cloud scheme in order to accommodate cirrus physics

Ulrike Burkhardt (DLR)

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Mixed-phase

Paul Field (Met Office)

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Representing cloud and precipitation in the ECMWF global model

Richard Forbes (ECMWF)

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Microphysics and convection in the grey zone

Luc Gerard (RMI Belgium)

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Ice cloud particle terminal velocity parameterizations for temperatures of 0 to -85C

Andrew Heymsfield (NCAR)

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Kinematic modelling: How sensitive are aerosol-cloud interactions to microphysical representation

Adrian Hill (Met Office)

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The behavior of two climate models that include a PDF-based parameterization (abstract)

Vincent Larson (Univ. Wisconsin-Milwaukee)

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Using CloudSat and the A-Train for model validation

Matt Lebsock (JPL)

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Representing cloud-aerosol interactions in GCMs

Ulrike Lohmann (ETHZ)

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Sub-grid cloud parametrization issues in the Met Office Unified Model: A tale of several grey zones

Cyril Morcrette (Met Office)

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Humidity-convection feedbacks in a mass flux scheme based on resolved size densities

Roel Neggers (KNMI)

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Radiation across spatial scales (and model resolutions)

Robert Pincus (NOAA-ESRL)

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Evaluating parameterisations of subgrid-scale variability

Johannes Quaas (Univ. Leipzig)

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Cloud and microphysical schemes in ARPEGE and AROME models

Yann Seity and Christine Lac (MeteoFrance)

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High-resolution winter simulations of winter precipitation over the Colorado Rockies

Greg Thompson (NCAR)

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Toward a unified microphysics scheme for NWP models in Canada

Peter Yau (McGill University)

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Local information


You can also see an archive of past workshops

View full calendar of events