1975年8月河南省特大暴雨雨强极值的重新估算  

THE REESTIMATE OF RAIN INTENSITY EXTREMES OF THE SUPER-HEAVY RAIN IN HENAN IN CHINA IN AUG.1975

作　　者：王兴荣[1] 高守亭[2] 

机构地区：[1]安徽省气象科学研究所,安徽合肥230061 [2]中国科学院大气物理研究所,北京100029

出　　处：《热带气象学报》2007年第2期196-200,共5页Journal of Tropical Meteorology

摘　　要：通过对云中气载液态水含量以及水汽和气载液态水之间的平衡方程的讨论,建立了改进的可降水量Ia公式。按照改进的公式,重新估算了1975年8月河南省特大暴雨7日20时雨强。结果表明,分别以遂平气象站记录的8 m/s和按物象估算的12 m/s地面风速为基础的改进的板桥水库附近8月7日20时雨强估算值Iae1=75.0 mm/h和Iae1=95.8 mm/h很接近实际的雨强极值Ioe=99.7 mm/h。By the discussion of airborne liquid water content and the balance equation between water vapor and liquid water, an advanced precipitable formula is set up. According to the advanced formula, the precipitable water of the super-heavy rain in Henan in China in August 1975 is a fresh estimation, and the advanced enumerative extremes of rain intensity in the neighborhood of Banqiao reservoir Iae=75.0 mm/h or Iael=95.8 mm/h according to 8 m/s （at Suiping weather station） or 12 m/s surface velocity （the estimated value from physical phenomena） , respectively, are close to the actual extremes of rain intensity Ioe=99.7 mm/h.

关 键 词：水汽 气载液态水 平衡方程 改进 可降水量 特大暴雨 雨强 极值 

分 类 号：P426.62[天文地球—大气科学及气象学]