近62 a甘肃极端降水特征及其关键影响因子
王鑫, 杨金虎, 王朋岭, 黄鹏程, 卢国阳, 胡婕

Spatial-temporal variation of extreme precipitation and its key influencing factors in Gansu Province over the past 62 years
WANG Xin, YANG Jinhu, WANG Pengling, HUANG Pengcheng, LU Guoyang, HU Jie
表4 极端降水指数均值突变年份及突变前后均值差值
Tab.4 The abrupt change years of extreme precipitation indices’ mean values and the difference in mean values before and after the abrupt change
极端指数 突变年份 突变后较突变前的均值差值
全省 河西 河东 全省 河西 河东
CDD/d 1990 2004 1990 -4.0 -4.9 -3.3
CWD/d 1987 1987 -0.5 -0.7
PRCPTOT/mm 1993 16.3
SDII/(mm·d-1 2011 2012 2011 0.4 0.4 0.4
Rx1day/mm 2011 2010 2.9 3.9
Rx5day/mm 1972 4.1
R10mm/d 2008 1972 0.6 -1.7
R20mm/d 2012 0.3
R95p/mm 2011 2012 17.1 11.9
R95n/次 2012 7.4
R95i/(mm·次-1 1993 1.0
R95c/% 2004 2012 2.5 5.1