CNN —The Northern Hemisphere may be transitioning into fall, but there has been no let up from extreme heat. New data shows last month was the hottest September – the fourth consecutive month of such unprecedented heat – putting 2023 firmly on track to be the hottest year in recorded history. That’s well above the 1.5 degrees Celsius threshold to which countries aim to limit global warming under the Paris Climate Agreement. The extreme September “has pushed 2023 into the dubious honor of first place – on track to be the warmest year and around 1.4 degrees Celsius above pre-industrial average temperatures,” Burgess said. The significant margin by which heat records are being broken matters, she told CNN.

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Persons: Copernicus, ”, Samantha Burgess, Paulo Amorim, Zeke Hausfather, Maximiliano Herrera, ” Herrera, Chris Ratcliffe, ” Burgess, El Niño, Friederike Otto, ” Otto Organizations: CNN, Bloomberg, Oceanic, Atmospheric Administration, Grantham Institute, Climate, “, United Locations: Paris, Libya, Greece, Bulgaria, Turkey, Canada, South America, York, Brazil, Spain, Poland, Austria, France, Europe, London, Dubai, United Nations, COP28