The world’s run of record-breaking hottest years is extremely unlikely to have happened without the global warming caused by human activities, according to new calculations.

Thirteen of the 15 hottest years in the 150-year-long record occurred between 2000-14 and the researchers found there is a just a 0.01% chance that this happened due to natural variations in the planet’s climate.

Natural climate variations just can’t explain the observed recent global heat records, but manmade global warming can.

2015 was revealed to have smashed all earlier records on Wednesday, after the new study had been completed, meaning the odds that the record run of heat is a fluke are now even lower.

“Natural climate variations just can’t explain the observed recent global heat records, but manmade global warming can,” said Prof Stefan Rahmstorf, at the Potsdam Institute for Climate Impact Research in Germany and one of the research team.