RCCs are the middle tier in a three-tiered WMO operational infrastructure that supports National Meteorological and Hydrological Services (NMHSs) to generate and deliver up-to-date climate information and products for climate services. RCCs and NMHSs are supported by WMO-designated Global Producing Centres for Long-Range Forecasts (GPCLRFs), which have been established to provide a range of global long-range forecasting products. RCCs are being implemented across all WMO regional associations.
The RCCs and GPLRFs are integral components of WMO's Global Data Processing and Forecasting System (GDPFS), with functions and designation criteria defined in the Manual on the GDPFS (WMO No. 485). Through the support they provide to NMHSs, RCCs and GPCLRFs are also key operational entities within the Global Framework for Climate Services (GFCS) the Climate Services Information System (CSIS).