Page History

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The page will be updated as required. It was last changed on 1523.11.2016.

• Latest change (1523.11.2016): The implementation date is confirmed as IFS Cycle 43r1 was implemented in operations on Tuesday 22 November 2016. The first operational run using the new cycle will be the 06 UTC analysis and forecast in the Boundary Conditions Optional Programme on 22 November followed by the 12 UTC main assimilation and forecast.
  

  This is to confirm the implementation of IFS Cycle 43r1 in operations yesterday, Tuesday 22 November 2016.
  
  The monthly forecast extension to the ensemble will be run with the new IFS

  Cycle 43r1

  cycle for the first time on Thursday 24 November 2016.

  In order to manage the transition, changes to dissemination requirements will be suspended from 09:00 UTC on 21 November 2016  to 09:00 UTC on 22 November 2016.

  Previous changes:
  

  ECMWF thanks all users for their efforts to prepare their systems for the change by using our test datasets.

  
  
• Previous change (157.11.2016): The implementation date is confirmed as Tuesday 22 November 2016. The new delivery schedule for the ENS will not be implemented with the implementation of IFS Cycle 43r1.1.11.2016: A new land surface simulation is used for the land initial conditions of the ENS re-forecasts - see Meteorological content of the new cyclefirst operational run using the new cycle will be the 06 UTC analysis and forecast in the Boundary Conditions Optional Programme on 22 November followed by the 12 UTC main assimilation and forecast. The monthly forecast extension to the ensemble will be run with IFS Cycle 43r1 for the first time on Thursday 24 November 2016.
  

  In order to manage the transition, changes to dissemination requirements will be suspended from 09:00 UTC on 21 November 2016  to 09:00 UTC on 22 November 2016.

For a record of changes made to this page please refer to   Document versions .

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