More detailed blog posts made this week on the research attempting to quantify the potential human contribution to California's drought are available from Dana Nuccitelli at the Guardian's "Climate Consensus - the 97% blog, and from Dr. Michael Mann at Huffington Post.
Figure 1. Kevin Anchukaitis (left) and Daniel Griffin (right) used tree-rings from centuries-old blue oak like the one pictured to provide long-term context for the ongoing California drought. 2014 image by Megan Lundin.
Figure 2. Super Soaker: A massive drought-denting extratropical storm soaks the U.S. West Coast as seen in this 4 pm PST December 10, 2014 satellite image. Image credit: NASA/GSFC.
Yosemite Park waterfalls resume flowing
Yosemite National Park's big waterfalls--Yosemite Falls, Bridalveil Fall, and Cascade Fall--resumed flowing again on December 3 after two days of significant rainfall in California's Yosemite area. "To see Yosemite Falls coming to life this morning is truly exhilarating," stated Don Neubacher, Yosemite National Park Superintendent on December 3. "This is a wonderful time to visit Yosemite National Park and the waterfalls just add to the magnificence of the park." The falls slowed to a trickle in mid-July and were completely dry for most of August, September, October, and November due to California's exceptional drought. You can view the falls on the Yosemite Falls webcam. Today's rains are sure to make the waterfall roar big-time!
Figure 3. Yosemite Falls on December 4, 2014 after a round of heavy rains got them flowing again (top) and what the falls looked like on December 1, 2014 during the peak of California's record drought (bottom.) Image credit: Yosemite Conservancy.
Video 1. NatureRelaxation.com just released this beautiful high definition journey to the magnificent and rejuvenating Yosemite Falls, photographed in 2011.
I'm on the road today to rainy San Francisco, where I'll be visiting the WU main office and attending next week's American Geophysical Union conference. As a result, my posts will be a little irregular for the next ten days.
Jeff Masters
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