"Both natural variability in temperature and anthropogenic warming have contributed to the recent snowpack decline, though disentangling their influences exactly remains elusive," Betancourt said. "Regardless of the ultimate causes, continuation of present snowpack trends in the Rocky Mountains will pose difficult challenges for watershed management and conventional water planning in the American West."
The study's findings were published online May 12 in the journal Geophysical Research Letters, a publication of the American Geophysical Union.
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