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The deadly rainfall and flooding that devastated parts of West Africa this fall was 80 percent more likely to happen because of climate change, according to an international climate science collaborative. 

The study from the World Weather Attribution, or WWA, also concluded that 2022’s seasonal rainfall in two major West African water regions, the Lake Chad and Niger Basins, was 20 percent wetter due to the impacts of climate change. Nigeria, Niger, Chad, and Cameroon, all of which have territories within either of the two basins, were the most impacted by the flooding. 

The team of researchers used historic weather data and computerized climate models to compare the likely intensity of seasonal rainfall in the Lake Chad Basin with and without human activities altering the climate. They found that the region’s extreme rainfall would have been unlikely without human-caused warming. Now, such rain is likely to occur once every 10 years.  

In September, Chad, one of the poorest countries in the world, expe... Read more

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