You may have heard the term “atmospheric river” in recent years – but what does it mean? Did you know that it’s literally akin to a river in the sky? Or that they carry water vapor content that’s comparable to twenty-five Mississippi Rivers? Today we’re going Off The Radar to discuss ARs with the scientist that put this weather phenomenon on the map. Dr. Marty Ralph is the Director of the Center for Western Weather and Water Extremes at the Scripps Institution of Oceanography. We’ll be diving into the ways the West Coast gets their precipitation, how we rank them, and the impact they have on weather across the globe.

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