Well, El Niño is the warmer phase of ENSO. El Niño occurs more often than its colder counterpart, La Nina. The effects of El Niño are:
- Temperature changes,
- Precipitation changes,
- Storm track changes and intensity,
- Alteration of currents and ocean temperature.
Now, there are secondary effects, which include:
- Fires,
- Drought,
- Flooding,
-Economic changes,
-price of heating, food, etc.,
-Political and social unrest,
-Crash of fisheries,
-Famine,
-Plagues (hanta virus),
-Insect population explosion leading to disease and plagues,
-and Crop failure
Hopefully I was able to help you out-!