攀枝花短时强降水气候特征分析  

Climate Characteristics Analysis of Short-term Strong Precipitation in Panzhihua

作　　者：张玉琴[1] 姜波[1] 李永军[1] 尹雪梅[1] 惠富斐 

机构地区：[1]四川省攀枝花市气象局,攀枝花617000

出　　处：《高原山地气象研究》2013年第2期36-40,共5页Plateau and Mountain Meteorology Research

摘　　要：利用攀枝花市1988～2010年5～10月的逐时降水资料,对各历时各级强降水的时空分布特征进行了分析,利用皮尔逊-Ⅲ型频率分布函数,计算了攀枝花市4站1h、3h和6h各重现期的极端最大降水量。结果表明:各级强降水主要集中在6～9月,以7月为最多,且日变化特征显著,最容易出现在00～05时。1h、3h、6h的最大降水量均出现在盐边,盐边和市区更容易发生1h≥50mm的极端强降水。短时强降水过程具有非常强的局地性,单站过程高达80%,且雨强越大局地性越强。各历时各重现期的极端最大降水量均以盐边为最大。Based on the hourly precipitation data in may to October of PanZhiHua from 1988 to 2010, the spatial and tem- poral distribution characteristics of the strong precipitation at all levels and durations are analyzed. Using the Pearson-Ill type frequency distribution function,the paper calculated the extreme maximum precipitation in the return period in 1 hours,3 hours and 6 hours of all four station. The results show that strong precipitation at all levels which have significant daily variation char- acteristics are mainly concentrated in June, September and July for the most, and they most easy to appear at 00 to 05. The big- gest precipitation in 1 hours,3 hours and 6 hours all appear in Yanbian station,Yanbian and Panzhihua station are more likely to appear extreme strong precipitation with 1 hour rainfalls≥50 mm. Short -term strong precipitation process has significant lo- cal characteristic, single station process reaches as high as 80%, and the raininess is stronger always companying with more sig- nificant local characteristic. The Yanbian station has the biggest extreme maximum precipitation in all durations and return pe- riods.

关 键 词：攀枝花 短时强降水 重现期 

分 类 号：P468[天文地球—大气科学及气象学]