Last month was the warmest September globally since records began being kept in 1880, NASA reported Sunday. January through September data have 2014 already at the third warmest on record. Projections by NOAA make clear 2014 is taking aim at hottest year on record.
Remarkably, this September record occurred even though we’re still waiting for the start of El Niño, which reveals just how strong the underlying trend of human-caused warming is. It’s usually the combination of the long-term manmade warming trend and the regional El Niño warming pattern that leads to new global temperature records.