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The ECCC global ensemble prediction system (origin cwao in the TIGGE archive) was upgraded on July 3 2019. The main changes in this upgrade are:
Full details of the changes made to the various systems are available in this official page. |
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The ECCC global ensemble prediction system (origin cwao in the TIGGE archive) was upgraded to version 5.0.0 on 18 September 2018. The main changes in this upgrade are:
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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The resolution of one-week ensemble prediction model of JMA was upgraded on 21 November 2007. Major changes are:
Notes:
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UKMO
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UM upgraded to version PS43 for the 12UTC cycle on 4 December 2019. The PS43 upgrade to the Met Office global modelling capability introduces a new data assimilation system to the global ensemble and a significant upgrade to the global model physics. MOGREPS-G is now driven by an ensemble of analyses, each with its own data assimilation cycle (En-4D-en-VAR), replacing the original ETKF (Ensemble Transform Kalman Filter) method. The result is a more sophisticated ensemble with increased spread and stability. The global model physics is upgraded to the GA7.2 configuration which is focused on improvements to physical processes. This has several significant benefits including improvements to 250hPa winds, 850hPa tropical winds and temperatures and improved tracks of Tropical Cyclones. The UM is upgraded to UM11.2. |
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UM upgraded to version PS39 from 12UTC cycle on 11 July 2017. TIGGE global ensemble (the Met Office MOGREPS-G) was upgraded to 20km (from 33km), N640L70, 280x960 lat-long grid, 0.1875 N-S x 0.28125 E-W degrees; the MOGREPS-G will continue to run four times a day (00, 06, 12 and 18UTC), but the number of ensemble members per run has increased from 12 to 18, with the last two runs being combined to create a 36-member time-lagged ensemble. Forecast length remains at 7d 6h. Relevant associated deterministic/data assimilation changes:
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