| When was the current long-range forecast system implemented? | April 2012 |
|---|---|
| Is it a coupled forecast system? | No |
| Is it a Tier-2 forecast system? | Yes |
| Atmospheric model resolution | Semi-Lagrangian, 1.125° lat × 1.40625°lon/L28 |
| Ocean model (if applicable) | N/A |
| 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? | Persisting SST anomaly atop annual cycle |
| Hindcast Period | 1981-2010 |
| 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 Apr. to 12 hr. 30th Apr with 12 hour step) |
| Ensemble size for the forecast | 20 |
| 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. 28th April) |
| Length of forecasts | 4 months (seasonal/three month forecast with one month lead time) |
| Data format | GRIB 1 |
| What is the latest date predicted anomalies for the next month/season become available | 30th of the month prior to current. For example, forecast for JJA is available on 30th April |
| How are the forecast anomalies constructed? | Forecast minus model 30 yr. climatology from hindcasts |
| URL where forecast are displayed | http://wmc.meteoinfo.ru |
| Point of Contact |
Vladimir Kryjov (kryjov@yahoo.co.uk) |
