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The researchers noted that the Paris agreement had helped reduce projections for global warming from the baseline of 4C by 2100 before the accord was signed.<\/p>\n
If countries successfully delivered on promised climate plans that could limit global warming to 2.6C, the world could experience 57 fewer hot days annually than it would have at 4C, the scientists said.<\/p>\n
But Friederike Otto, professor in climate science at Imperial College London, called for greater urgency to limit the consequences further. \u201cThe difference between the 1.3C of global warming and the 2.6C means the difference between life and death of thousands of people, and of course, also ecosystems.\u201d<\/p>\n
The scientists also warned that extreme heat events had become more likely over the past decade. A weeklong heatwave in southern Europe, as the region experienced in 2023, was now 70 per cent more likely at a temperature that was 0.6C hotter than a decade ago, the research found. <\/p>\n
<\/p>\n The study was among several reports and papers released this week quantifying the implications of long-term global warming.<\/p>\n The WMO reported that the level of carbon dioxide in the atmosphere reached a record high in 2024, increasing by 3.5 parts per million to 423.9 ppm. It was the largest one-year increase since measurements began in 1957, it said.<\/p>\n The rate of growth had also increased from an average of 0.8 ppm per year in the 1960s to 2.4 ppm per year in the decade from 2011 to 2020. <\/p>\n Phil Williamson at the University of East Anglia said while it was expected that CO\u2082 levels in 2024 would reach a record high, \u201cwhat\u2019s new \u2014 and scary even for climate scientists\u201d was the rate of increase had sped up when annual fossil fuel emissions had stayed much the same.<\/p>\n \u201cThat means that the balance of removals and additions in the natural climate system is also changing, with worldwide forest fires and warming seas now providing a positive feedback to global heating.\u201d<\/p>\n <\/p>\n Climate change had also made this year\u2019s wildfires in Los Angeles about two to three times more likely and 25 times larger, in terms of burnt area, according to an annual assessment by scientists, including those from the European Centre for Medium-Range Weather Forecasts and the UK Centre for Ecology & Hydrology.<\/p>\n This came at the same time as a warning of \u201cnew reality\u201d in the breach of the first so-called tipping point, where a small change in the Earth\u2019s system can trigger a significant, sudden and potentially irreversible transformation.<\/p>\n The research, led by scientists from Exeter university, said warm-water coral reefs, experiencing widespread dieback, were passing their tipping point and the world was \u201cdangerously close\u201d to other tipping points.<\/p>\n Climate Capital Where climate change meets business, markets and politics. Explore the FT\u2019s coverage here<\/a>.<\/p>\n<\/a><\/p>\n
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