PLEA Network

17 May 2023, The Conversation: Global warming to bring record hot year by 2028 – probably our first above 1.5°C limit. One year in the next five will almost certainly be the hottest on record and there’s a two-in-three chance a single year will cross the crucial 1.5℃ global warming threshold, an alarming new report by the World Meteorological Organization predicts. The report, known as the Global Annual to Decadal Climate Update, warns if humanity fails to reduce greenhouse gas emissions to net zero, increasingly worse heat records will tumble beyond this decade. So what is driving the bleak outlook for the next five years? An expected El Niño, on top of the overall global warming trend, will likely push the global temperature to record levels. Has the Paris Agreement already failed if the global average temperature exceeds the 1.5℃ threshold in one of the next five years? No, but it will be a stark warning of what’s in store if we don’t quickly reduce emissions to net zero. Warming makes record heat inevitable. The World Meteorological Organization update says there is a 98% chance at least one of the next five years will be the hottest on record. And there’s a 66% chance of at least one year over the 1.5℃ threshold. There’s also a 32% chance the average temperature over the next five years will exceed the 1.5℃ threshold. The chance of temporarily exceeding 1.5℃ has risen steadily since 2015, when it was close to zero. For the years between 2017 and 2021, it was a 10% chance. Read more here