Brilliant research! Everyone knows that the reason North Dakota is full of lush green rainforests is because of the very consistent rainfall they receive year after year. North Dakota rainforests are even more lush than those found in Arizona.
This year, record amounts of snow and rainfall resulted in unprecedented flooding of the Souris and Missouri rivers, wreaking millions of dollars in damages in North Dakota towns like Minot and states throughout the Midwest. The U.S. Army Corps of Engineers braced for crisis along the Souris on Father’s Day, with severe flooding setting in June 24. Last weekend the river crested, some areas reaching 14 feet above flood level.
With thousands of people displaced and homes swallowed by the river, it is hard to imagine the midwestern United States could soon be experiencing water shortages. But a paper published earlier this month in the journal Science, shows that in the coming years the trend will be toward uniformly increased temperatures and less snowfall in the north. The research was based on 66 tree-ring chronologies showing data back to the 1200s. Ultimately, this could result in lower peak streamflows in headwaters feeding the Missouri, Columbia and Colorado rivers.
“The past 30 years have been unusually warm across the northern Rockies compared to the last 800 years,” said Gregory Pederson, research ecologist for the U.S. Geological Survey and lead author of the paper. “What’s worrying is that it may indicate a point when we have generally synchronous decline [of snowpack] across the West.”
http://www.nytimes.com/