Page History

...

• • is run four times daily:
    • base times 00 UTC and 12 UTC, producing a 10 day forecast (T+0 to T+240) and also a 15 day forecast (T+0 to T+360).
      • Dissemination schedule - Atmospheric model ensemble 10-day forecast (HRES and CTRL) and model analysis and forecast output parameters (Set I-i, I-ii, I-iii as shown for 00UTC and 12UTC base times).
      • Dissemination schedule - Atmospheric model ensemble 15-day forecast (ENS) and model analysis and forecast output parameters (Set III as shown for 00UTC and 12UTC base times).
      • Dissemination schedule - Ocean wave model ensemble 10-day forecast (HRES-WAM)  and model analysis and forecast output parameters (Set II as shown for 00UTC and 12UTC base times).
      • Dissemination schedule - Ocean wave model ensemble 15-day forecast (ENS-WAM)  and model analysis and forecast output parameters (Set IV-i, IV-ii, IV-iii as shown for 00UTC and 12UTC base times).
    • base times 06UTC and 18UTC, producing a 6 day forecast (T+0 to T+144). Results from these runs are:
      • used in Early cut off analysis (SCDA) and Long window data analysis (LWDA).
      • disseminated T+0 to T+72.
      • Dissemination schedule - Atmospheric model 90 hour forecast (HRES) and model analysis and forecast output parameters(Set I-i as shown for 06UTC and 18UTC base times).
      • Dissemination schedule - Atmospheric model 3 day ensemble forecast (ENS) and model analysis and forecast output parameters (Set III as shown for 06UTC and 18UTC base times.  Tropical Cyclone Tracks are also available for 06UTC and 18UTC base times).
      • Dissemination schedule - Ocean wave model ensemble 90 hour forecast (HRES-WAM) and model analysis and forecast output parameters (Set II as shown for 06UTC and 18UTC base times).
  • has horizontal resolution of 9 Km and vertical resolution of 137 model levels.  These values are the same as those of the High Resolution (HRES) in earlier IFS versions.
  • has land-atmosphere and ocean-atmosphere coupling.
  • has 50 ensemble members plus an unperturbed control member (CTRL).
  • the unperturbed control member (CTRL) corresponds to the High Resolution (HRES) in earlier IFS versions.  CTRL forecasts maintain continuity of output for users.

...

• • is run once daily:
    • base time 00UTC, producing a 46 day forecast (T+0 to T+960/1104).
      • Dissemination schedule - Atmospheric model ensemble extended forecast (ENS extended). See also model analysis and forecast output parameter means and anomalies (Set VI).
      • Dissemination schedule - Ocean wave model ensemble extended forecast (ENS-WAM extended). See also model analysis and forecast wave parameters and means (set VI-v-c)

• • has horizontal resolution of 36 Km and vertical resolution of 137 model levels.
  • has land-atmosphere and ocean-atmosphere coupling.
  • has 100 ensemble members plus an unperturbed control member (CONTROL).

...

• • is run once monthly:
    • base time 00UTC on 1st of each month and run on the 5th of each month producing a 7 month forecast (13 months every quarter).
      
      • Dissemination schedule - Seasonal forecast (SEAS).  See also model forecast seasonal output parameter means and anomalies (set V)
      • Dissemination schedule - Seasonal forecast (SEAS).  See also model forecast seasonal output wave monthly means (set V-iii-c) and (set V-v-e))
  • has horizontal resolution of 36 Km and vertical resolution of 91 model levels.
  • has land-atmosphere and ocean-atmosphere coupling.
  • has 50 ensemble members plus an unperturbed control member.

Further information:

• • • Atmospheric Model high resolution 10-day forecast (Set I - HRES)

    • Ocean Wave Model high resolution 10-day Forecast (Set II - HRES-WAM)

    • Atmospheric model Ensemble 15-day forecast (Set III - ENS)

    • Ocean Wave Model Ensemble 15-day forecast (Set IV - ENS-WAM)

    • Seasonal 7-month forecast (Set V - SEAS)

    • Atmospheric Model Ensemble extended forecast (Set VI - ENS extended)