Provides standardized multi-model ensemble sub-seasonal forecast guidance by combining outputs from multiple international forecasting centres to improve forecast reliability and support operational forecasting.
WMO Lead Centre for Sub-seasonal Prediction Multi-Model Ensemble (S2S MME)
Link To DSS: https://charts.ecmwf.int/wmo/charts
Developer: World Meteorological Organization
Stage Of Maturity: Fully operational
- Coverage: Global
- Climate Timescales Covered: Extended Range (Sub-seasonal), Seasonal, Short-range (Weather: 0–10 days)
Strengths
- Combines forecasts from multiple leading prediction centres
- Reduces dependence on a single model
- Improves forecast robustness through ensemble consensus
- Supports operational sub-seasonal forecasting
- Internationally coordinated and standardized
Weaknesses
- Requires technical expertise to interpret probabilistic guidance
- Not a complete decision support system
- Limited sector-specific advisory functionality
- Forecast skill varies geographically and seasonally
Synergies
- Complements seasonal forecast guidance from APCC MME, IRI, and NMME.
- Provides sub-seasonal forecast inputs for FOCUS.
- Supports operational forecasting within the Climate Services Toolkit.
- Can inform impact-based systems such as SMART and SATARK.