Numerous investigators have shown that ENSO cycles (consisting of El Nino and La Nina phases) have significant relations with, and impacts on, climate, environment, and socio-economic aspects on Asian and Western Pacific countries and regions. Therefore, it is necessary to improve our understanding and knowledge in these fields and essential to enhance the monitoring and prediction of ENSO events and SSTA on the warm pool over the Western Pacific Ocean at the seasonal and inter-annual time scales with necessary related information, products and data sets distributed to APN countries/regions via an Internet network, thus leading to the improvement of seasonal and inter-annual prediction of monsoon activity and significant climate events in this region.