陕西主要城市新旧暴雨强度误差变化特征  

Variation Characteristics of Intensity Error of New and Old Rainstorm in Main Cities of Shaanxi Province

作　　者：毛明策[1] 吴素良[1] 雷杨娜[1] Mao Mingce;Wu Suliang;Lei YangNa(Shaanxi Climate Center,Xi,an 710014,Shaanxi)

机构地区：[1]陕西省气候中心,陕西西安710014

出　　处：《陕西水利》2023年第1期62-65,共4页Shaanxi Water Resources

基　　金：陕西省2021年重点研发计划(2021SF-477)。

摘　　要：为了适应城市暴雨强度增强的事实,修编了陕西部分城市的暴雨强度公式。比较新公式与1980年代公式发现:早期公式与当前实况误差大于规范要求的限值,表明观测资料长度对暴雨强度公式与实况强度之间的误差有很大影响;早期公式暴雨强度低于当前值,因此当前仍使用早期暴雨强度公式会降低设计和建设标准,这也是造成城市积水和洪涝灾害的重要原因。西安4个年代暴雨强度公式的误差表明,随着暴雨强度变化更新城市暴雨强度公式是较为合理的选择。The rainfall intensity formula for several cities in Shaanxi province was revised in order to adapt the fact of increasing urban rainfall. The result shows, comparing the new formula to the formula made about 1980’s, the error between early formula and reality is beyond the national standard, that means the length of rain data is deeply influenced the error between the formula and reality. The rainfall intensity predicted by the earlier formula is lower than the real intensity, so the earlier formula reduces the design and construction standard, which was the main reasons for the urban waterlogging and flood disaster. The error of four formulas in different era suggests it is reasonable selection that the revision of urban rainfall intensity formula along with the change of storm intensity.

关 键 词：暴雨强度公式 气候变化 修编 城市积水灾害 

分 类 号：P333[天文地球—水文科学]