9ALEXANDER L V,ZHANG X,PETERSON T C,et al.Global observed changes in daily climate extremes of temperature and precipitation[J].Journal of Geophysical Research,2006,111(3):5109.
10ZHAI P M,ZHANG X B,WAN H,et al.Trends in total precipitation and frequency of daily precipitation extremes over China[J].Journal of Climate,2005,18(7):1096-1108.