Extended Abstract (1.3M)J1.3
Trends in time-varying percentiles of daily minimum and maximum temperature over North America
Scott M. Robeson, Indiana University, Bloomington, IN
By estimating trends in time-varying percentiles of daily air temperature across North America, variations in the entirety of the air-temperature frequency distribution are evaluated. Strong warming (2-3C/50yr) of daily maximum temperatures from 1948 to 2000 has been restricted to December to April in northwestern North America, but has occurred across all percentiles. More-intense warming (>3C/50yr) in daily minimum temperatures has been more widespread – occurring over the western half of North America – but has been concentrated in the lower portion of the air-temperature frequency distribution during January to March. The coldest minimum temperatures, therefore, are warming at a faster rate than the warmest minimum temperatures.
Joint Session 1, Climate Trends (Joint between the 15th Symposium on Global Change and Climate Variations and the 14th Conference on Applied Climatology; Room 6C)
Monday, 12 January 2004, 10:45 AM-12:00 PM, Room 6C
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