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Excerpt: "The conflict that has torn Syria apart can be traced, in part, to a record drought worsened by global warming, a new study says."

An extreme drought in Syria between 2006 and 2010 may have helped trigger the country's 2011 revolution. (photo: Hadi Mizban/AP)
An extreme drought in Syria between 2006 and 2010 may have helped trigger the country's 2011 revolution. (photo: Hadi Mizban/AP)


Syria's Civil War Linked, in Part, to Global Warming

By Al Jazeera America

03 March 15

 

he conflict that has torn Syria apart can be traced, in part, to a record drought worsened by global warming, a new study says.

In what scientists say is one of the most detailed and strongest connections between violence and human-caused climate change, researchers from Columbia University and the University of California Santa Barbara trace the effects of Syria's drought from the collapse of farming, to the migration of 1.5 million farmers to the cities, and then to poverty and civil unrest. Syria's drought started in 2007 and continued until at least 2010 — and perhaps longer. Weather records are more difficult to obtain in wartime.

"There are various things going on, but you're talking about 1.5 million people migrating from the rural north to the cities," said climate scientist Richard Seager at Columbia, a co-author of the study published Monday in the journal Proceedings of the National Academy of Sciences. "It was a contributing factor to the social unraveling that occurred that eventually led to the civil war."

The study's authors do not claim climate change caused Syria's civil war. It's not that simple. Lead author Colin Kelley at the University of California said there are numerous factors involved, including the oppressive Assad regime, an influx of more than 1 million refugees from Iraq, the tumult of the Arab Spring, as well as the drought. Kelley and Seager said they couldn't say which factors were the most important.

But, Seager said, this is the "single clearest case" ever presented by scientists of climate change playing a part in conflict because "you can really draw a blow-by-blow account with the numbers."

Kelley and Seager do statistical and computer simulation analysis to connect global warming to the multi-year drought, finding that such dry spells are two to three times more likely because of human-caused heat-trapping carbon dioxide in the atmosphere than under natural conditions. The connection between climate change and drought in the eastern Mediterranean is one of the most robust in science, said Seager and other scientists.

They also show that Syria's temperature has risen by nearly 2 degrees Fahrenheit since 1900, which adds to drying through evaporation, and winter rainfall has dropped, too. Three of the four worst multi-year droughts in Syria's history have occurred in the last 30 years, Kelley said.

Martin Hoerling, a National Oceanic and Atmospheric Administration meteorologist, praised the study and the arguments as "quite compelling." Hoerling, who has produced studies dismissing global warming's role in some U.S. droughts including California's, said the Kelley paper makes a strong case for the Syrian drought and the violence being connected to climate change.

David Titley, a Pennsylvania State University scientist and retired Navy admiral, said the paper does a good job linking climate change and drought to "varsity-level instability."

"Reading this paper is like reading the analysis of an airline crash," Titley wrote in an email. "There is a chain of events stretching back over 40 years that has led to the present calamitous conditions. The change in climate, forced by greenhouse gases, was one of the key events in this tragic story."

Robert Danin, who is an expert in Middle Eastern politics as a former State Department official, said it's probably correct to say the drought is one factor in the chaos in Syria. But Danin, now a senior fellow at the Council on Foreign Relations, cautions about taking the link too far.

But the link between climate change and conflict has been suggested often in recent years. Last October, then-Defense Secretary Chuck Hagel unveiled a Pentagon report that made exactly that point. "Droughts and crop failures can leave millions of people without any lifeline, and trigger waves of mass migration," Hagel said.

Also last year the Nobel Peace Prize winning Intergovernmental Panel on Climate Change concluded: "Human security will be progressively threatened as the climate changes."

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