Questions about Extreme event attribution

Short answers, pulled from the story.

When did the Intergovernmental Panel on Climate Change issue its First Assessment Report?

The Intergovernmental Panel on Climate Change issued its First Assessment Report in 1990. That document stated it was virtually impossible to demonstrate a cause-effect relationship with high confidence from studies of a single variable.

What year did Fraction attributable risk first apply to extreme weather events?

Fraction attributable risk was first applied in a 2004 analysis of the 2003 European heatwave. This provided a direct link between anthropogenic climate change and an individual extreme climate event.

How many days with extreme heat did Suriname experience compared to without global warming?

Suriname experienced 182 days with extreme heat compared to 24 days without global warming. These figures represent data recorded between May 2023 and May 2024.

Which organization announced the formation of a constantly operating attribution office in late 2025?

Copernicus Climate Change Service announced the formation of a constantly operating attribution office in late 2025. This office aims to provide two assessments a month that arrive within a week of an extreme weather event.

What percentage of events were found more likely or severe by Climate Central's November 2024 review?

Climate Central's November 2024 review found that climate change made 74% of events more likely or severe. The review covered more than 600 climate attribution studies addressing almost 750 extreme weather events and trends.