GEM#
Provided by Canadian Meteorological Center (CMC), CAN
Model description#
The Global Environmental Multiscale (GEM) model is developed by the Numerical Weather Prediction Research Section at Environment and Climate Change Canada (ECCC). It uses a Yin-Yang grid for global integrations. More information can be found in Girard et al. (2014) and McTaggart-Cowan et al. (2019), and source code is available at ECCC-ASTD-MRD/gem.
Experiment runs#
GEM 5.0km atmosphere-only#
- Location:
/fastdata/ka1081/DYAMOND/data/winter_data/DYAMOND_WINTER/CMC/GEM/DW-ATM/with grid information contained in
atmos/fx/gn/- Setup:
Atmosphere-only
The CMC DYAMOND simulations did not include a coupled ocean, nor a complete chemistry model. The model physics configuration matches that described by McTaggart-Cowan et al. (2019), but without parameterized convection.
- Resolution:
In the horizontal, a 5km grid spacing is used.
In the vertical, the model uses the operational L84 configuration with a top at 0.1 hPa, 12 levels below 850 hPa, and the first momentum level at 20m above the surface (thermodynamic level at 10m above the surface).
For all model componenets, a 150s model time step is used.
- Comments:
This run uses DYAMOND-prescribed SST and sea ice forcings.
Soil properties are taken from the CMC operational land surface analysis.
The base-layer sea surface temperature followed the prescribed forcings, with a parameterization based on Zheng and Beljaars (2005) used to represent mixed-layer and cool-skin effects.
Minimal model documentation is available in github: ECCC-ASTD-MRD/gem.
- Data description:
Comming soon.
- Contact person: