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Position: Home > Articles > Study on Compiling Rainstorm Intensity Formula in Xi'an Urban Journal of Anhui Agricultural Sciences 2015 (26) 223-225+228

西安城区暴雨强度公式编制研究

作  者:
毕旭;党超琪;程龙;罗慧;石明生;赵荣
单  位:
陕西省西安市气象局
关键词:
暴雨强度公式;对比;年最大值法;多个样法
摘  要:
利用西安观测站1961~2003年自记纸降雨量观测值转化为逐分钟降雨量的观测资料和2004~2012年逐分钟自动站降雨量观测资料,建立了分钟雨量资料序列,选取5~180 min的累积雨量资料样本,采用指数分布、耿贝尔分布和皮尔逊-Ⅲ型分布曲线拟合,3种曲线分布拟合效果比较指数分布拟合效果较好;采用最小二乘法和高斯-牛顿法进行计算,经过对比选取指数分布结合高斯-牛顿法计算的结果为西安城区暴雨强度公式计算结果;对计算的结果与历史计算结果进行对比分析,年多个样法的计算结果与2008年计算结果误差相近,新年最大值法暴雨强度公式均方根误差和相对均方根误差稍大。
译  名:
Study on Compiling Rainstorm Intensity Formula in Xi'an Urban
作  者:
BI Xu;DANG Chao-qi;CHENG Long;Xi'an Weather Bureau;
关键词:
Rainstorm intensity formula;;Comparison;;Annual maximum method;;Multiple method
摘  要:
By using the minutely precipitation of autographic record paper data from 1961 to 2003 and automatic observation data from 2004 to2012 of Xi'an Observation station( 57036),the data sequence of minute precipitation was established. Selecting the data sample of 5-180 min accumulative rainfall,and the distribution curve fitting were carried out with exponential distribution,Gumber distribution and P-Ⅲ distribution,and the result showed the exponential distribution had better effect than the others,then calculated with least square method and Gauss-Newton method,compared with these two results,we chose the result calculated by exponential distribution combined with Gauss-Newton method as the result of rainstorm intensity formula in Xi'an urban,and comparedwith the historical result,the result calculated by the method of multiple values per year is close to the result calculated in 2008,and both the root mean square( RMS) error and relative RMS error of the new rainstorm intensity formula calculated with annual maximum method are a little larger.

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