El Nino, La Nina

El nino and La nina is a natural phenomenon that occurs in the Pacific ocean, precisely in the equatorial region. This phenomenon occurs within a period of two to seven years. El nino is a condition where the sea surface temperature was increased (warm phase). While, La Nina is a condition where sea surface temperatures was decreased (cold phase). El-Nino will occur if the temperature and humidity of the atmosphere which is above the warm waters in the central and east Pacific increased. This makes the formation of clouds that will increase rainfall in the area. Meanwhile, La nina will appear if the sea surface temperature in central and eastern Pacific increased from normal at certain times and the air pressure in the equatorial western Pacific region decreased. El Nino causes intense cloud formation, this makes the rainfall in central and eastern Pacific region is high, but in the Western Pacific region is experiencing above normal drought. In the other hand, La nina inhibit the formation of clouds in the Pacific region and the Middle East which resulted drought. Meanwhile, the rainfall in the western Pacific region is very high. This has caused flooding in Indonesia.