In 2004, researchers pioneered a study that quantified the impact of human-induced climate change on extreme weather events, focusing on the 2003 European heatwave, which resulted in over 70,000 deaths. This study laid the groundwork for “extreme event attribution,” a field assessing how climate change influences the intensity, frequency, and impact of various weather extremes.
Carbon Brief’s updated interactive map now includes over 600 studies covering nearly 750 extreme events, revealing that 74% were exacerbated by climate change, while 9% were less likely or severe. The remaining cases included 10% with no observed human influence and 7% that were inconclusive. Heat extremes account for over one-third of the studied events, and attribution science has expanded significantly, with a dramatic increase in studies published in the last decade.
New methodologies such as “rapid studies” from the World Weather Attribution initiative allow for swift analyses following extreme events, providing timely insights into human contributions. An emphasis on “impact attribution” quantifies the social and economic ramifications of climate influences on weather extremes.
Research has predominantly focused on the global north, exposing disparities in data availability and recognition of extremes in developing regions. Notably, 16% of studies now focus on China, driven by recent extreme weather incidents. Overall, the map illustrates a growing understanding of the link between climate change and extreme weather, emphasizing the urgent need for continued research and attention to vulnerable areas.
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