PLEA Network

15 August 2016, Washington Post, What we can say about the Louisiana floods and climate change. Here we are again, with a flood event upending the lives of large numbers of Americans and making everybody wonder about the role of climate change. In this case, it’s the stunning, multiday flooding in southern Louisiana that hit after a low pressure system combined with record amounts of atmospheric water vapor, dumping more than two feet of rainfall over three days in some places. At least 11 people were killed, and thousands have had to leave their homes.On Monday, climate researchers and weather experts were in what’s by now a familiar posture — explaining that, no, this event wasn’t “caused” by climate change, but then again, it’s precisely the sort of event that you’d expect to see more of on a warming planet. “Climate change has already been shown to increase the amounts of rain falling in the most intense events across many parts of the world, and extreme rainfall events like this week’s Louisiana storm are expected [to] grow increasingly common in the coming years,” wrote the Weather Underground’s Bob Henson and Jeff Masters. [‘The worst situation I’ve ever been through.’ Six killed, thousands displaced during historic Louisiana flooding] “Louisiana is always at risk of floods, naturally, but climate change is exacerbating that risk, weighting the dice against us,” Katharine Hayhoe, a climate researcher at Texas Tech University, told The Washington Post. “How long will it be until we finally recognize that the dice are loaded?” The easiest link between climate change and extreme weather events involves heat waves, arecent study by the National Academy of Sciences found. This makes sense: A warming planet overall breaks warm-temperature records more frequently than cold-temperature records and sets the stage for lengthier, or stronger, bouts of extreme heat. Read More here