Megadrought

Mega-Drought!?

The 15-year drought across most of the Western U.S. is what bioclimatologist Park Williams indicated is notable because "more area in the West has persistently been in drought during the past 15 years than in any other 15-year period since the 1150s and 1160s" — that's more than 850 years ago. 


September 3, 2014--California's 100-year drought (USA Today)

California is in the third year of one of the state's worst droughts in the past century, one that's led to fierce wildfires, water shortages and restrictions, and potentially staggering agricultural losses.


September 1, 2014--American Southwest has 80% chance of decade-long drought this century (Ars Technica)

In a good year, the management of water resources in the American West is contentious. When a drought hits, most everyone feels it, and this year is certainly no exception. The notion of sustainability in water-strapped places isn’t much more complicated than balancing a checking account. And the budget projections aren’t exactly encouraging.


August 29, 2014--Greenhouse gas buildup ‘loads the dice’ for Southwest megadroughts (Summit Voice)

Tree ring records clearly show that the southwestern U.S. experienced megadroughts long before the anthropogenic global warming era. One such decades-long dry spell may have been a factor in the collapse of the Anasazi civilization at Mesa Verde.


November 6, 2011--Scientists find evidence of ancient megadrought in Southwestern U.S. (Science Daily)

A new study at the the University of Arizona's Laboratory of Tree-Ring Research has revealed a previously unknown multi-decade drought period in the second century A.D. The findings give evidence that extended periods of aridity have occurred at intervals throughout our past. Almost 900 years ago, in the mid-12th century, the southwestern U.S.


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