These centres of excellence strengthen the capacity of WMO Members in a given region to deliver better climate services to national users. Groups of centres that collectively provide these forecasts and services in a distributed network are called an RCC Network. The mandatory functions of RCCs include:
- Operational activities for long-range forecasting;
- Operational activities for climate monitoring;
- Operational data services;
- Training in the use of operational RCC products and services.
RCCs are also encouraged to take up climate prediction and projection (beyond 2 years timeframe), non-operational data services, coordination, training and capacity building, and research and development. RCCs use the Regional Climate Outlook Forums (RCOFs) to coordinate the operationalization of objective regional seasonal and sub-seasonal forecasts.