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System Configuration Information

These information can be changed if the corresponding operational model is modified.

GPC Moscow

GPC Moscow
When was the current long-range forecast system implemented?

October 2022 (DJF2022 in WMOLC-LRFMME)

Is it a coupled forecast system? No
Is it a Tier-2 forecast system? Yes
Atmospheric model resolution 0.9x0.72 degree lon-lat, 96 vertical levels
Ocean model (if applicable) N/A
Source of atmospheric initial conditions Operational HMCR  3D-Var analysis for upper-air fields; OI analysis for screen-level temperature and humidity;  simplified extended Kalman filter for soil moisture
Source of ocean initial conditions N/A
If Tier-2, what is the source of SST predictions? persistent SST and sea-ice anomalies
Hindcast Period 1991-2015
Ensemble size for the hindcasts 11 members for each year (total number of hindcasts 275)
How is the hindcast ensemble configured breeding; SPP in the model is partially activated
Ensemble size for the forecast 41
How is the forecast ensemble configured? breeding (the same procedure as for hindcast ensemble, only the number of members differs); SPP in the model is partially activated
Length of forecasts 135 days
Data format GRIB 2
What is the latest date predicted anomalies for the next month/season become available

30th of the month prior to current. (E.g.) forecast for JJA is available on 30th April

How are the forecast anomalies constructed? anomaly=forecast-(hindcast climate)
URL where forecast are displayed
Point of Contact

Mikhail Tolstykh (

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