Tuesday, October 30, 2018

Are Extreme Weather Events Linked to Climate Change?

It seems the news has no shortage of extreme weather events: wildfires raged across Greece and the northwestern United States, flooding washed out the northeastern US, and intense heatwaves blanketed Japan and the United Kingdom. The island of Puerto Rico is facing down another hurricane season while many areas only recently regained power after Hurricane Maria devastated the island in 2017.
If it feels like we are hearing about extreme weather events more and more frequently now, it’s because we are. Large fires are now five times more common and fire season lasts three months longer than 40 years ago. The most intense rainstorms have increased by as much as 70% in the last 50 years and the city of Houston, Texas has seen three five-hundred-year floods—that is, floods so intense they are only expected to happen once every 500 years—in the last 3 years.
What does science say about the link between climate change and this increase in extreme weather? Can we attribute a single event, like a particular heat wave or wildfire or flood, to climate change?

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