Cold

Increasing hot weather has been accompanied by a decrease in cold weather. Across the globe in recent decades, there has been a reduction in the number of cold extremes, such as very cold nights, and a widespread reduction in the number of frost days in mid-latitude regions.1 In the United States, there have been fewer unusually cold days. The 10-year period ending in 2007 witnessed fewer severe cold snaps than any other 10-year period since record keeping began in 1895.2 These changes cannot be explained by natural variation, and correspond very well with computer simulations that include human influences on climate.3 Snow cover has decreased in most regions, especially in the spring, and mountain snowpack has also decreased in several regions.4 - See more at: http://www.climatecommunication.org/new/features/extreme-weather/reduced-cold/#sthash.QC1sWc8U.dpuf