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El-Nino and La-Nina, what have they got to do with our monsoon?
El nino and Lanina refers to the abnormal conditions prevailing in the Pacific ocean which are periodic in nature that is ,they repeat over a period of 2 to 7 years.The enso events are the coupled atmospheric/oceanic phenomena where there is oscillation of sea surface temperature between the westernRead more
El nino and Lanina refers to the abnormal conditions prevailing in the Pacific ocean which are periodic in nature that is ,they repeat over a period of 2 to 7 years.The enso events are the coupled atmospheric/oceanic phenomena where there is oscillation of sea surface temperature between the western and eastern Pacific ocean
Effect of elnino on Indian monsoon
Elnino in general has negative effect over the south-west monsoon in India that is,in general the amount of precipitation during monsoon is less.Though,every event will have a different actual effect over the monsoon.The exact effect of the elnino will also depend on the conditions prevailing in the Indian Ocean dipole.
Effect of Lanina on Indian monsoon
The Lanina conditions are generally believed to bring positive effect over the south-west monsoon.During this time the Indian Ocean branch of walker cell is strengthened and the high pressure conditions near Madagascar and eastern coast of Africa are strengthened which strengthens the south- west monsoon.Though the exact effect of Lanina also depends on Indian Ocean dipole.
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