Weather and climate are two conditions that are similar but different sense, especially to the period of time. Weather is an early form associated with the interpretation and understanding of the physical condition of the air for a moment at a location and a time, whereas climate is the continuation condition and is a collection of weather conditions which is then compiled and calculated in the form of average weather conditions within a certain time. Weather or meteorological science is science that examines the events and weather within a period of limited space, while the climate science or climatology is a science that is also reviewing about the weather but the symptoms and characteristics of these symptoms have a common trait in the long time and large areas on the surface of the earth’s atmosphere.

Trewartha and Horn says that the climate is an abstract concept, where the climate is a composite of the day to day weather conditions and atmospheric elements within a particular region in the long term. Climate is not just average weather, because there is no concept of an adequate climate without any appreciation for the weather changes daily and seasonal weather changes and the succession of weather episodes caused by atmospheric disturbances that are always changing, even in studies of the climate the emphasis given to average value, but the deviations, variations and circumstances or extreme values ​​which also have significance.

Trenberth, Houghton and Filho defines climate change as the climate changes that directly or indirectly influenced by human activities that alter the composition of the atmosphere which will increase climate variability observed in a fairly long period. One result of the climatic aberrations is the occurrence of the phenomenon of El Nino and La-Nina. El-Nino phenomenon will cause a decrease in the amount of rainfall far below normal for several regions in Asia. The opposite occurs during La-Nina phenomenon takes place. » Read more: Weather and Climate