The CMC global ensemble prediction system was upgraded to version 2.0.2 on 17 August 2011. The main changes included in this upgrade are: - The number of members in the ensemble Kalman filter is doubled from 96 to 192.
- The resolution of the medium-range forecasts is changed from 100 to 66 km.
- The model top is raised from 10 hPa to 2 hPa.
- A new dynamical model, with a Charney-Phillips vertical grid, is used.
Further documentation of the operational upgrade can be found at: http://collaboration.cmc.ec.gc.ca/cmc/CMOI/product_guide/docs/changes_e.html
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