CASCADE team members Chris Paciorek and Michael Wehner prepared this figure describing changes in extreme temperature and precipitation for review articles in the Bulletin of the American Meteorological Society as source material for the 3rd US National Climate Assessment.  The figure shows changes in observed twenty year return value of the daily accumulated precipitation from 1948 to 2010. Units: inches. Only locations for which data from at least 2/3 of the days in the 1948-2010 period were recorded are included in this analysis. The change in return period threshold at each station is shown by a circle whose relative size portrays its statistical significance.

Source: Kunkel et al. (2013) Monitoring and Understanding Trends in Extreme Storms: State of Knowledge, Bulletin of the American Meteorological Society, 94, 499–514, 10.1175/BAMS-D-11-00262.1