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disaster
n climatology El Niño - Southern Oscillation , also known by the acronym ENSO ( El Niño - Southern Oscillation ) , it is a periodic climate phenomenon that causes a strong warming of the Pacific Ocean Central and Southern and Eastern ( Latin America) , in the months December and January , -
cause
The causes of the Niño are caused by the presence of 2 types of waves in the atmospheric circulation , ( Kelvin waves and Rossby waves) , which are directed in the opposite direction with respect to each other . Kelvin waves, faster , are directed towards the east ; the Rossby waves are , -
scale global effects
In addition to the direct effects on the spot or on the Pacific, ENSO is considered to be the most known cause of interannual variability of weather and climate conditions on a global scale in the world , with a frequency that varies between three and eight years. -
ENSO description
The ENSO is a cyclical climate phenomenon coupled result of the interaction between ocean and atmosphere. By definition it is in the presence of El - Niño when the surface of the central part of the Pacific Ocean manifests an increase of the temperature of at least 0.5 ° C for a period of time not less than 5 months. -
EL NINO description
The phenomenon causes floods in the areas directly affected , but also drought in the most distant areas from it and other disturbances that vary in all its manifestations.