Climate change drives world to first 12-month spell over 1.5 degrees Celsius
The previous warmest January was in 2020, according to the Copernicus Climate Change Service (C3S) records which go back to 1950.
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Countries agreed at United Nations climate talks in Paris in 2015 to keep global warming well below 2 degrees Celsius and aim to limit it to 1.5 degrees Celsius, a level regarded as crucial to preventing the most severe consequences.
The first 12-month period of exceeding 1.5 degrees Celsius does not yet mean the Paris goal has been missed, as the UN agreement refers to an average global temperature over decades.
Some scientists, however, have said the 1.5 degrees Celsius aim can no longer realistically be met, and have urged governments to act faster to cut CO2 emissions to limit the amount of overshoot of the target.
“Rapid reductions in greenhouse gas emissions are the only way to stop global temperatures increasing,” C3S deputy director Samantha Burgess said.
At the same time, economic weakness and political pressures are challenging government will to implement policies to curb greenhouse gases as politicians strive for re-election in a bumper year for democratic elections.
“We are heading towards a catastrophe if we don’t fundamentally change the way we produce and consume energy within a few years,” Denmark’s Global Climate Policy Minister Dan Jorgensen said. We don’t have long,” he said.
Every month since June 2023 has been the world’s hottest on record, compared with the corresponding month in previous years.
US scientists have said 2024 has a one-in-three chance of being even hotter than last year, and a 99 per cent chance of ranking in the top five warmest years.
El Nino began to weaken last month, and scientists have indicated it could shift to the cooler La Nina counterpart later this year. Still, average global sea surface temperatures last month were the highest for any January on record.
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While it is winter in the northern hemisphere, in parts of South America, experiencing the southern hemisphere summer, temperatures are blistering.
Argentina endured a heatwave between January 21 and 31, while the Chilean capital of Santiago registered its third hottest temperature on record on January 31, climbing above 37 degrees Celsius.
Such heat in central Chile caused wildfires that killed at least 131 people in early February.