World Weather Attribution

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World Weather Attribution (WWA) is an international initiative that provides rapid, scientifically rigorous studies determining if and to what extent anthropogenic climate change alters the likelihood and intensity of extreme weather events, such as heatwaves, floods, and droughts. Founded in 2015, WWA aims to inform public discourse and disaster response shortly after events occur.

Climate change means extreme fire seasons in Canada are here to stay

More than 3 million hectares have burned to date  (Natural Resources Canada, 2026), prompting a Level 4 National Preparedness response (GoC, 2026, ciffc). Although...

Climate change increases likelihood of compounding drivers of severe wildfire conditions in France and Spain

After months of drought (WWA, 2026a) and periods of extreme heat (WWA, 2026b), Western Europe is battling widespread and intense wildfires. At the time...

Increasingly hot Europe faces more Severe Droughts and Growing Challenges for Water and Land Management

The European summer of 2026 has so far been characterised by exceptional heat and widespread dryness (Copernicus, 2026). Between April and June, large parts...

Climate Change and urban pressures intensify flood risk on the Gulf of Guinea coast

Between 20–22 June, the coastal regions of the countries bordering the Gulf of Guinea, particularly Côte d’Ivoire, Ghana, Togo, and Nigeria, experienced exceptionally widespread...

Fossil Fuels Are Heating America’s 250th Birthday  

A widespread heat wave is forecast to affect much of the central and eastern United States over the Fourth of July weekend, driven by...
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