13 Feb 2015:
Study Says U.S. Southwest Set
To Face Unprecedented Drying This Century
Risk of future prolonged drought in the Southwest
The U.S. Southwest and Great Plains are on track to face persistent drought during the second half of this century, a new study
forecasts, and the drought will be worse than anything seen in modern history or even during ancient so-called "megadroughts." Many studies have predicted that the Southwest could dry due to human-induced climate change, but this is the first to say that such drying could exceed the worst conditions of the distant past. The impacts of such a future drought would be devastating, the researchers say, given the region’s much larger population and heavy reliance on water and other natural resources. The study used 17 different climate models to analyze the future impact of rising temperatures, and it compared two different global warming scenarios — “business as usual,” which assumes that greenhouse gases will continue to steadily rise, and a scenario in which emissions are moderated. “The surprising thing to us was really how consistent the response was over these regions, nearly regardless of what model we used or what soil moisture metric we looked at,” said lead author Benjamin I. Cook, a researcher with Columbia University and NASA.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
Watch the video.
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.