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Table of Contents
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2023

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title10-08-2023 Three ocean parameters removed from KMA model outputs

Three of nine newly introduced ocean parameters in KMA model outputs since the last model change  on the 1st of July 2023 were problematic and thus discontinued in the archive (since 9.8. resp 1.11. 2023 for the realtime resp reforecast data).

For more details go to the page  Issues with data.


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title27-06-2023 ECMWF forecast system change

With IFS Cycle 48r1, the horizontal resolution of the  medium-range ensemble  (ENS) will increase from 18 to 9 km. This will bring the ENS to the same horizontal resolution as the high resolution forecast (HRES). The vertical resolution for both ENS and HRES will remain at 137 model levels and the ENS will continue to have 51 members. 

Cycle 48r1 will also bring a major upgrade to the configuration of the  extended-range ensemble  (ENS extended): Rather than being  an extension of the medium-range forecasts starting twice a week at day 15 it will  be a completely separate system, running daily from 00 UTC out to day 46 with 101 members. Over the entire forecast range the resolution will remain unchanged at 36 km horizontally and 137 model levels.

The main changes to S2S contribution from ECMWF are:

  • increased ensemble size to 101 for the real-time forecasts
  • the frequency changed to daily for the real-time forecasts since 28/06/2023
  • the same horizontal resolution for the atmosphere Tco319L137 during the whole forecast range
  • the first on-the-fly reforecasts run with the new cycle on 29/06/2023

More details can be found in ECMWF Model and Implementation of IFS Cycle 48r1

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