Study on the Characteristics of Extreme Precipitation Climate Events in Guiyang From 1961 to 2023
Based on the precipitation observation day data of Guiyang National Benchmark Climate Station from 1961 to 2023,four sets of 8 precipitation extreme indices were selected to analyze the temporal trend of extreme precipitation climate events in Guiyang.The results showed that:① Extreme precipitation climate events showed an overall increasing trend,with RX1day,SDII,R50mm,R95p,and R99p increasing year by year,while CDD and CWD decreasing year by year.②RX1day and R20mm underwent significant mutations in 1986 and 1989;SDII,R95p,and R99p mutated in 1982,1997,and 1990 respectively,but the mutations were not significant.③The aver-age values of CDD,RX1day,SDII,R50mm,R95p,and R99p in the 1990s and 2010s were significantly higher than those in other eras;The average values of CWD and R20mm in the 2010s were also higher than those in the first decade of the 20th century since the 2010s.④The extreme precipitation intensity in Guiyang has increased,with the maximum values of RX1day,SDII,R20mm,R50mm,and R95p appearing from 2014 to 2020.
万方数据
维普
