El Niño and Global Warming
A satellite image showing the 2015 El Niño with rising temperatures in the Pacific. Source: NOAA.
CAAG-El-Nino-and-global-warmingDownload
Bullet-Point Summary:
El Niño events in the Pacific Ocean are natural patterns that have been going on for millions of years.
El Niño events in the 21st century have had some very strong warming spikes.
If you remove the effect warming El Niño events in the climate record, the amount of warming since 2000, you find almost half of the global warming in the 21st century is due to El Niño events.
https://climateataglance.com/el-nino-and-global-warming/