World Weather Attribution

World Weather Attribution (WWA) is a consortium of scientists that conducts rapid attribution studies to determine the influence of climate change on extreme weather events. They use climate models and historical data to assess how much more likely or intense an event was due to human-caused global warming. WWA is newsworthy because of its recent analyses of several high-profile extreme weather events around the globe. Recent studies have linked the US West heatwave, deadly floods in Brazil's coffee region, and wildfires in Patagonia to the climate crisis. Specifically, they found the US heatwave would have been "virtually impossible" without climate change, that continued fossil fuel use will intensify floods in Brazil, and that climate change made the Patagonian wildfires three times more likely. WWA's work is significant because it provides scientific evidence linking specific extreme weather events to climate change, informing public understanding and potentially influencing policy decisions related to climate mitigation and adaptation.