吴川市暴雨强度公式的推导及评估  

Derivation and Evaluation of Rainstorm Intensity Formula for Wuchuan

作　　者：吴宗树 陈志权 罗舒萌 郑华斌 陈晓珠 WU Zong-shu;CHEN Zhi-quan;LUO Shu-meng;ZHENG Hua-bin;CHEN Xiao-zhu(Wuchuan Meteorological Service,Wuchuan 524500)

机构地区：[1]吴川市气象局,广东吴川524500

出　　处：《广东气象》2024年第4期20-24,共5页Guangdong Meteorology

摘　　要：为进一步做好城市排水系统的科学性和实用性,采用吴川市国家气象观测站1980—2021年逐分钟雨量数据资料,利用年最大值法、数值逼近和最小二乘法等,推导吴川市暴雨强度公式,结果表明:湛江市暴雨强度公式理论值与吴川市实际值误差太大,不能达到室外排水规范的要求,而推导的暴雨强度区间参数公式和暴雨强度综合公式精度均符合精度要求,可作为相关部门设计吴川市排水基础设施的相关参考依据,且暴雨强度区间参数公式精度明显优于暴雨强度综合公式。In order to further improve the scientific and practical nature of urban drainage systems,the minute by minute rainfall data of Wuchuan National Meteorological Observation Station from 1980 to 2021 were used in this paper to deduce the formula of rainstorm intensity in the city,together with the annual maximum method,numerical approximation and least squares method.The results are shown as follows.The error between the theoretical value of Zhanjiang and the actual value of Wuchuan is too large to meet the requirements of outdoor drainage specifications.The accuracy of both the parameter formula of rainstorm intensity interval and the comprehensive formula of rainstorm intensity derived in this paper meet the accuracy requirements,which can be used as reference for relevant departments to design drainage infrastructure in Wuchuan,and the accuracy of the parameter formula of rainstorm intensity interval is much better than that of the comprehensive formula of rainstorm intensity.

关 键 词：气候学 暴雨强度公式 年最大值法 皮尔逊-Ⅲ型分布曲线 吴川市 

分 类 号：P46[天文地球—大气科学及气象学]