[1]周绍毅,苏志,廖雪萍,等.基于芝加哥法的桂林市短历时暴雨特征分析[J].气象研究与应用,2019,40(02):25-29.
　Zhou Shaoyi,Su Zhi,Liao Xueping,et al.Analysis of Short-duration Rainstorm Characteristics in Guilin City Based on Chicago Method[J].Journal of Meteorological Research and Application,2019,40(02):25-29.
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基于芝加哥法的桂林市短历时暴雨特征分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第40卷
期数:
2019年02期
页码:
25-29
栏目:
天气气候
出版日期:
2019-06-30

文章信息/Info

Title:
Analysis of Short-duration Rainstorm Characteristics in Guilin City Based on Chicago Method
作者:
周绍毅1;  苏志1;  廖雪萍2;  何如1
1. 广西气象服务中心, 南宁 530022;
2. 广西气象科学研究所, 南宁 530022
Author(s):
Zhou Shaoyi1;  Su Zhi1;  Liao Xueping2;  He Ru1
1. Guangxi Meteorological Service Center, Nanning 530022;
2. Guangxi Meteorological Society, Nanning 530022
关键词:
芝加哥法; 短历时; 雨型; 桂林市
Keywords:
Chicago Law; dhort duration; rainfall pattern; Guilin City
分类号:
P429
摘要:
利用桂林气象站1957-2014年逐分钟降雨资料，运用线性倾向估计、M-K突变检验方法分析了桂林市短历时暴雨变化特征，采用芝加哥法推算了重现期2a，历时30-180 min的暴雨雨型。结果表明：（1）桂林市各短历时最大降雨量均呈增加趋势，30-90min最大降雨量增加趋势较为显著，120-180min最大降雨量增加趋势不明显；（2）各历时前10个降雨极值在1986-2014年间出现的个数大于1957-1985年间，降雨极端值均出现在1978年以后，各历时年最大降雨量变化均未有明显的突变；（3）桂林市短历时暴雨雨型为单峰型，30-90min雨峰位置降雨量随着历时的增加而增加，90-150min雨峰位置降雨量随着历时的增加先减少后增加，雨峰位置基本处于整场降雨过程的1/3分位；（4）30min和60min降雨过程的累积降雨量一开始出现激增变化，随后增速趋于平缓，历时90-180min降雨过程的累积降雨量经过平缓增加-激烈增加-平缓增加的过程。
Abstract:
Based on the minute-by-minute rainfall data of Guilin meteorological station from 1957 to 2014, the variation characteristics of short-duration rainstorm in Guilin City are analyzed by linear tendency estimation and M-K mutation test. The rainstorms have a 2a recurrence period and last 30-180 min are calculated by Chicago method. The results show that:(1) the maximum precipitation in each short duration of Guilin City shows an increasing trend, the increasing trend of a duration ranges from 30 to 90 minutes is more signifcant, while 120-180 minute duration is not obvious; (2) the extremum number of the top 10 rainfall duration in 1986-2014 is greater than that in 1957-1985; the extreme precipitation values all appear after 1978, and there was no abrupt change in the annual maximum precipitation. (3) The short-duration rainstorm pattern in Guilin is single-peak, the peak position of the rainfall duration between 30 and 90 minutes increases with the increase of duration; when the duration ranges from 90 to 150 minutes, the peak position decreases frst and then increases with the increase of duration, and the location of the rain peak is basically 1/3 of the whole rainfall process; (4) the cumulative rainfall of the 30-minute and 60-minute rainfall process changes sharply at the beginning, and then the growth rate tends to be flat. The cumulative rainfall ranges from 90 to 180 minutes shows a process of gentle increase-intense increase-gentle increase.

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相似文献/References:

[1]周绍毅,卢小凤,罗红磊.南宁市短历时暴雨演变特征分析[J].气象研究与应用,2016,37(01):64.
　Zhou Shao-yi,Lu Xiao-feng,Luo Hong-lei.Analysis on Change Characteristics of Short Duration Rainstorm in Nanning City[J].Journal of Meteorological Research and Application,2016,37(02):64.
[2]谢东,苏小玲,刘蕾,等.基于芝加哥法的柳州市设计暴雨雨型研究[J].气象研究与应用,2018,39(03):72.
　Xie Dong,Su Xiaoling,Liu Lei,et al.Study on rainstorm type design of Liuzhou based on Chicago Method[J].Journal of Meteorological Research and Application,2018,39(02):72.

备注/Memo

备注/Memo:
收稿日期:2019-01-20。
基金项目:广西气象局气象科研项目（桂气科2017TG02）和广西气象服务中心科研项目（201809）
作者简介:周绍毅(1980-),男,广西藤县人,高级工程师,从事气候应用与气候资源研究工作。E-mail:343173058@qq.com
更新日期/Last Update: 1900-01-01