54 Years Of Montana Temp Records Show Nighttime Warming In Both Winter & Summer Months

[hatrack]

HELENA, Mont. (AP) — A former climatologist and professor at Montana State says in a recent study that late winter, early spring and parts of summer are getting warmer in Montana.

Joseph Caprio, who led the study published in the January edition of the international journal "Climate Change," found that the coldest nighttime temperatures in Bozeman and Coldstream, British Columbia, have occurred less often over the past several decades. In contrast, Caprio said Wednesday that extreme warm nighttime temperatures are occurring more often — at nearly a rate of 1% a year, or roughly 10% more often each decade.

"It means that these events of cold daily temperatures have been decreasing each decade," he said. "It was a new way of looking at the way climate is changing by using extreme meteorological data."

Researchers began the study by compiling 54 years of daily temperatures recorded at Bozeman and Coldstream. The sites are about 500 miles apart and are separated by the Continental Divide, but they showed very similar warming trends.

EDIT

http://www.usatoday.com/weather/climate/globalwarming/2009-02-19-montana-warming_N.htm