Can someone help explain El Nino and La Nina please?Watch
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Just quoting in Puddles the Monkey so she can move the thread if needed
I am not really sure how these processes effect South America and Australia is someone able to please explain the process and effects?
Within the western pacific coast e.g. Australia, high air pressure system are developed due to presence of colder surfaces air causing air mass to diverge, hence, causes droughts (such as the great Australian drought).
La Nina is just enhanced normal conditions: air pressure is unusually high over the west coast of South America and low over eastern Australia. As warm water is pushed westwards sea levels rise by up to 1m and so forth.