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Drought-Stricken Colorado River Basin Could See Additional 20% Drop in Water Flow by 2050

/in , , /by /Yale Climate Connectionsby Jan Ellen Spiegel

Colorado is no stranger to drought. The current one is closing in on 20 years, and a rainy or snowy season here and there won’t change the trajectory. This is what climate change has brought. “Aridification” is what Bradley Udall formally calls the situation in the western U.S. But perhaps more accurately, he calls it hot drought – heat-induced lack of water due to climate change. That was the core of research released in 2017 by Udall, a senior climate and water scientist at Colorado State University’s Colorado Water Center, and Jonathan Overpeck at the University of Michigan.

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Atmospheric Rivers: California Could Experience More Intense Rains In The Future

/in , , /by /Yale Climate Connectionsby Diana Madson

Imagine a river flowing through the sky – and all of its water dropping down to earth. That’s kind of what happens during many winter storms on the west coast. A so-called “atmospheric river” is a long, flowing band of water vapor – typically a few hundred miles wide – that contains vast amounts of moisture. When it moves inland over mountains, the moisture rises, causing it to cool and fall to earth as rain or snow. Duane Waliser of NASA’s Jet Propulsion Laboratory says atmospheric rivers are often beneficial, because they provide about half of California’s fresh water supply. But strong atmospheric river systems can also be dangerous – especially when they stall, or produce rain on top of snow.

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