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Michael D. Regan
Michael D. Regan
A natural spectacle called "firefall" happens each February in California's Yosemite National Park when light from the setting sun strikes the park's Horsetail Falls, making it look like it's ablaze with fire. But this year the waterfall slowed to a trickle. NewsHour Weekend's Christopher Booker spoke with University of California Berkeley climate scientist Patrick Gonzalez to learn more.
Once a year, California's Yosemite National Park plays host to an impressive trick of sunlight and water on the vertical rock formation known as El Capitan. But warmer weather this year led to disappointment. Christopher Booker has more.
For a few weeks each February, a natural spectacle draws thousands of people to California's Yosemite National Park. It's called Firefall. It only lasts for a few minutes at sunset when the winter light hits the park's towering Horsetail Falls. At just the right angle. But this year, there was no firefight. Patrick Gonzalez is a professor with the University of California, Berkeley. He says this year there wasn't enough water. The reason, climate change.
The more snow that you have in the winter, the more water that you'll have coming over the falls. Our analysis show that total annual rainfall and snowfall has decreased across all of Yosemite National Park.
And Gonzalez says Firefall is not the only part of the park that's being impacted by climate change.
Our analysis of climate data shows that human caused climate change has heated the park 1.1 degrees Celsius or 2 degrees Fahrenheit. That might not sound like a lot, but 1.1 degrees Celsius is the equivalent of pushing a mountain down a hundred and eighty meters or six hundred feet — more than the height of the Washington Monument — from cooler areas at high elevation to warmer areas below. In Yosemite and across the western U.S., human-caused climate change has doubled the area of wildfire burned, has doubled tree death, and has shifted trees upslope into meadows.
In recent years due to concerns over the ecological damage that come with large crowds gathering in Yosemite. The National Park Service has tried to limit the number of people who come to watch Firefall. But as the climate continues to change, such restrictions may no longer be necessary.
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Christopher Booker is a correspondent and producer for PBS NewsHour Weekend covering music, culture, our changing economy and news of the cool and weird. He also teaches at Columbia University’s School of International and Public Affairs, following his work with Northwestern's Medill School of Journalism in Chicago and Doha, Qatar.
Michael D. Regan is a senior digital editor for PBS NewsHour.
Mori Rothman has produced stories on a variety of subjects ranging from women’s rights in Saudi Arabia to rural depopulation in Kansas. Mori previously worked as a producer and writer at ABC News and as a production assistant on the CNN show Erin Burnett Outfront.
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