Think of El Nino-La Nina as a natural cycle a bit like summer-winter.
Instead of the cycle taking a year it’s a little bit random, usually 3-7 years per cycle.
Just like some places get hot and dry in June but others get wet, El Nino affects the weather in different places.
Globally it makes average temperatures go up. This adds even more warmth on top of global warming, like adding even more heat to a summer heatwave. Making a hot thing hotter is usually worse than warming up something cool.
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