WRF (v4.4) | MPAS-A (v7.3) | CPAS (v1.1) ![]() |
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Obtaining/defining regional high-resolution grid | |||
Shape of region |
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Resolution variability |
Example: 27km - 9km - 3km - 1km |
Example: 60km - 3km mesh |
Example: 100km - 200m |
Automatic resolution boost for orography | |||
Automatic resolution boost for coastline | |||
Population of geographic data |
Example: topo_10m, topo_gmted2010_5m, topo_2m, topo_gmted2020_30s |
Example: topo_30, topo_gmted2020_30s |
Example: topo_10m, topo_5m, topo_2m, topo_30s, topo_15s, topo_3s, |
Analyzing simulation error in resolution jump / transition |
WRF (v4.4) | MPAS-A (v7.3) | CPAS (v1.0) ![]() |
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Model type | |||
Forecast accuracy and time horizon | |||
Time stepping |
(This time step size is limited by the smallest cell in the entire mesh. This is required to meet the stability condition for time integration. The presence of a small cell in the mesh makes the computational resource requirement prohibitively large. ) |
(This not only reduces the required computational resources, but also enables the use of extreme variable resolution on a global mesh.) |
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Hierarchical time-stepping (HTS) report | |||
Parallelization and load balancing | |||
Scalability | |||
Scale-awareness of physics model | |||
Handling wave reflection in resolution jump / transition. | |||
Model inconsistency between regional and the global driving model | |||
Four-dimensional data assimilation |