LC-WFV archive at ECMWF as of Febuary 2026

Created by Richard Mladek on Sept 14, 2026 1 minute read

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Operational support overview at ECMWF
- archive completeness & current status (history pages)
  - real-time data
  - on-the-fly reforecasts
- Incident / service request stats
  - Intense cooperation with CMA on some major technical challenges
    - repeating problems with data transfers between ECMWF & CMA
      - 70-170 GB sent daily to CMA
        last 2 weeks example (all models but HMCR)
    - cooperation on system changes to have both archives in sync
  - Model updates implemented in 2025
    - 3 major system changes (CNRM, IAP-CAS, JMA)
    - pending major changes (new fixed reforecast sets) for CMA, CNRM
- Recommended worflows links
  - Recommended support checks
    - Support checks on provider's end (table)
  - Model update handling
Progress on:
- BoM is preparing to resume their contribution to S2S stopped in 2020
  - reforecast sample data OK; waiting for the rest
- no progress
  - ocean parameters (done by 5 centres CMA, CNRM, ECMWF, ECCC,KMA)
    - BoM agreed in the past too
  - 6-hourly wind (done by 9 centres CNRM, CNR-ISAC, CPTEC, ECCC, ECMWF, IAP-CAS, JMA, KMA, NCEP)
    - CMA agreed in the past too

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