Despite a strong La Nina event cooling the Pacific Ocean, 2011 was about the 10th hottest year on record, scientists have found. “It’s clear over time the El Niño years tend to be the warmer years and the La Niña years tend to be the cooler years,” said Tom Karl, director of NOAA’s National Climatic Data Center. “This year the La Niña-related temperatures for 2011 were as warm as anything we’ve seen in the past, very close to the year 2008.” Every year since 1976 has been warmer than average, according to NOAA. While 2011 was the coolest year in the 21st century, it was tied with the second-warmest year of the 20th century, notes Climate Central’s Andrew Freedman.
2011 Was Hottest La Nina Year Ever