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Keep up to date with the Southwest Climate Change Network news feeds. Drawing on a selection of high-quality credible sources, the feeds provide quick access to new and recent stories on climate change and energy in the Southwest, cutting-edge climate change research, and climate change solutions involving policy, new technology, and the private sector.

Tree-Rings Reveal Second-Century Megadrought in the SW

Date Posted: 
November 10, 2011
Publisher: 
Geophysical Research Letters

A new study soon to be published in Geophysical Research Letters finds a previously unknown multi-decade drought in the southwestern U.S. during the second century A.D. Scientists at the University of Arizona produced a new tree-ring record from living and remnant bristlecone pine wood, and combined this record with other regional records to determine periods of unusually severe drought over the past 2000 years. According to the UANews, the researchers believe that these results indicate the southwestern U.S. should expect to see similar multi-decade droughts in the future, when temperatures are predicted to be even warmer than the past.