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... It found global heating accelerated from a steady rate of less than 0.2C per decade between 1970 and 2015 to about 0.35C per decade over the past 10 years. The rate is higher than scientists have seen since they started systematically taking the Earth's temperature in 1880.

"If the warming rate of the past 10 years continues, it would lead to a long-term exceedance of the 1.5C (2.7F) limit of the Paris agreement before 2030," said Stefan Rahmstorf, a scientist at the Potsdam Institute for Climate Impact Research and co-author of the study.

Extreme heat in recent years has been pushed higher by natural fluctuations -- such as solar cycles, volcanic eruptions, and the weather pattern El Nio -- that have led scientists to question whether startling temperature readings are outliers or the result of an increase in global heating. ...