JPEG of maps

Cover Caption: Maps of linear trends (°C/50yr) in time-varying percentiles of daily minimum air temperature (T_min) from 1948 to 2000. The 10^th, 50^th, and 90^th percentiles of T_min during January, April, July, and October reveal differential trends that are occurring between the lower-tail, middle, and upper-tail of the air-temperature frequency distribution. A pattern of strong lower-tail trends (some in excess of 4°C/50yr) that exceed those in the upper tail is evident in western North America during January and April. This differential warming pattern also occurs during February and March. Other locations and times of year show little or no warming, with modest cooling occurring during October.

Citation:
Robeson, S. M. (2004) "Trends in time-varying percentiles of daily minimum and maximum temperature over North America," Geophysical Research Letters, 31, L04203, doi:10.1029/2003GL019019. Abstract PDF

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