Day-to-day weather variations are growing more erratic and more extreme for at least one-third of the global climate, according to research by Princeton University's David Medvigy, assistant professor of geosciences, and postdoctoral researcher Claudie Beaulieu. Heavily overcast days with sudden thunderstorms and cloudless sunny days are more common now than they were in the early 1980s, according to the study, which was reported May 24, 2012 in the Trenton Times.
Journal citation: Medvigy, D. , and C. Beaulieu, 2012. Trends in daily solar radiation and precipitation coefficients of variation since 1984. J. Climate, 25, 1330-1339.