| Name of the GPC | Moscow, HMC RF |
| When was the current long-range forecast system implemented? | October 2004 / New forecast ensemble construction (described below) implemented in September 2007 |
| Is it a Tier-2 forecast system? | Yes |
| Atmospheric Model Resolution | Semi-Lagrangian, 1.125 lat x 1.40625 lon/L28 |
| Source of atmospheric initial conditions | NCEP Reanalysis 2 (hindcast) / HMC data assimilation system (forecast) |
| Source of ocean initial conditions | Reynolds-Smith OI |
| If Tier-2, what is the source of SST predictions? | Persisted SST anomaly |
| Hindcast Period | 1979-2003 |
| Ensemble size for the hindcasts | 10 |
| How is the hindcast ensemble configured? | 2 per day (5 last days of the month prior to current, 12 hr. steps. For example, hindcast for JJA: from 00 hr. 26th аApr. to 12 hr. 30th аApr with 12 hour step) |
| Ensemble size for the forecast | 10 |
| How is the forecast ensemble configured? | Original and perturbed (breeding of fast growing modes) analysis fields from the date 2 days prior to current month (For example, for JJA it is 12 hr. 28thа April) |
| Length of forecasts | 4 months (seasonal/three month forecast with one month lead time) |
| Data format | GRIB1 |
| What is the latest date seasonal anomalies for the next month/season become available? | SSTs are taken 3 days before the forecast period.
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| How are the forecast anomalies constructed? | Forecast minus model 25 yr. climatology from hindcasts |
Forecast model description
