BURLINGTON (AP) - A new report on the long-term impact of climate change in Vermont says the state's ski areas could see a short-term benefit with increased snowfall in the mountainous parts of the state.

But the estimate of what's being called a global warming "sweet spot" that could last for 25 years could be followed by most winter precipitation falling as rain.

That's one of the conclusions of the Vermont Climate Assessment report done by the University of Vermont's Gund Institute that was released Tuesday.

The document is said to be the first state-scale climate assessment in the nation.

The report found that over the past 40 years, the freezing period has shortened by four days each decade while the growing season has lengthened by 3.7 days over the same period.