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Introduction:-
The Monsoon is basically a result of the flow of moisture laden winds because of the variation of temperature across the Indian Ocean.There are a number of climatic phenomena which affect it namely the Indian ocean dipole, El nino, La nina, Equatorial Indian Ocean Oscillation (EQUINOO) etc. These phenomena affect the temperature distribution over the oceans and thus affecting the direction and intensity of flow of the moisture laden winds.
There have been recent reports that El Nino may disturb the Indian Monsoon and play badly with Indian agriculture. Monsoon is a familiar though a little known climatic phenomenon. In India, from agriculture to economic policies to disaster management, a lot depends on the monsosoon.
El Nino:-
El Nino and La Nina are opposite phases of what is known as the El Niño-Southern Oscillation (ENSO) cycle. The ENSO cycle is a scientific term that describes the fluctuations in temperature between the ocean and atmosphere in the east-central.
La Nina is sometimes referred to as the cold phase of ENSO and El Nino as the warm phase of ENSO. These deviations from normal surface temperatures can have large-scale impacts not only on ocean processes, but also on global weather and climate, including India.
For a normal monsoon season, the pressure distribution is as such:
This facilitates the movement of monsoon winds from the sea to the Indian land without any significant diversion.
But if for some reason this normal distribution is affected, then there is a change in the way trade winds (or monsoon winds) would blow.
For a El Nino Monsoon, the following is the advance of events:-
Impact of El Nino :-
By: Shashank Shekhar ProfileResourcesReport error
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