El Nino Southern Oscillation (ENSO) is one of climate variabilities that occurs in tropical Pacific ocean. ENSO
consists of two events, namely El Nino and La Nina. The El Nino phenomenon is preceded by the abrupt changes in
sea surface temperatures in the western Pacific. As a result, warm pool region is located in the western Pacific move
to the east, near Peru / Ecuador. An increase convection in Peru / Ecuador lead to the increase number of cumulus
clouds that result in heavy rain. By contrast, in Indonesia drought occurs. The opposite of El Nino events is La nina.
Impact La Nina is heavy rain in Indonesia.