The GCOS Cooperation Mechanism (GCM) was established to identify and make the most effective use of resources available for improving climate observing systems in developing countries, particularly to enable them to collect, exchange, and utilize data on a continuing basis in pursuance of the UNFCCC. In recent years, several countries have provided funds and participated on the Donor Board. The GCOS Sponsors (WMO, IOC, UNEP, ICSU) are seeking additional countries and organizations to help address the considerable and growing demands for improved climate observing networks in developing countries.