Noun. The El Nino Effect is a tropical weather system pattern that does stuff and we don't know what, neither do meteorologists. Which is why they use, this term when they don't know what the fuck is going on, just to cover their asses and to make them sound intelligent. As well as, to give the impression that there is "skill" involved in fortune telling. Oh, I mean meteorology.
Meteorologist: Hey we have this crazy tropical storm coming but we don't know what the fuck it's doing or why. What do we tell the public?
Head Meteorologist: *looks at the doppler radar* I don't know why the fuck its doing that.... tell them it's El Nino Effect.