A recent analysis by World Weather Attribution (WWA) indicates that human-induced global warming has made a severe heatwave in Australia in early January five times more likely. This heatwave, the most intense since the summer of 2019-20, saw temperatures surpassing 40 degrees Celsius in cities like Melbourne and Sydney and impacted multiple regions, contributing to significant bushfires.
The report attributes the intensity of the heat to greenhouse gas emissions, which have increased average temperatures by approximately 1.6 degrees Celsius, outweighing the cooling effects of a weak La Niña event. According to Professor Sarah Perkins-Kirkpatrick, a climate scientist involved in the report, heatwaves cause more fatalities in Australia than any other natural disaster. She warns that the effects of extreme heat can be hazardous, especially for those with underlying health issues.
The analysis suggests that, under current emissions trends, Australians can expect heatwaves similar to January’s every five years, with occurrences possibly increasing to every two years if global temperatures rise by 2.6 degrees Celsius by the century’s end. WWA emphasizes the deadly nature of extreme heat events as global temperatures rise, highlighting the urgency of addressing climate change.
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