El Nino and La Nina

El-Nino will occur if the waters are more
heat in the middle and eastern Pacific increased temperature and humidity on
atmosphere that was on it. This incident led to the
formation of clouds that will increase rainfall in some areas
it. The western part of the Pacific Ocean increased air pressure so
causing impaired growth of clouds over the sea east
Indonesia, so in some areas a decline in Indonesia
rainfall is far from normal
Sea surface temperature in central and eastern Pacific become more
higher than usual at certain times, though not always.
The situation is causing La-Nina phenomenon. Pressure
air in the western Pacific region decreased equator, more to the west of the
Under normal conditions, causing the formation of more clouds and rain
dense in the surrounding area
El-Nino occurrence does not happen in a single but progress
sequentially post-or pre-La-Nina. The results of studies from 1900
until the year 1998 show that El-Nino has occurred as many as 23
times (average 4 years). La-Nina is only 15 times (average 6
years). Than 15 times La-Nina events, approximately 12 times (80%)
occur sequentially with El-Nino years. La-Nina-El Nino followed only
happened 4 times from 15 times that preceded the incident while the El-Nino
8 times from 15 times the incident. In general, this shows that
opportunity for the La-Nina-El Nino is not so great. Genesis
1982/83 El-Nino years are categorized as El-Nino events are
not followed by a strong La-Nina.