昆山市暴雨短歷時(shí)設(shè)計(jì)雨型的推求

doi:10.12306/2020jms.0048

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昆山市暴雨短歷時(shí)設(shè)計(jì)雨型的推求
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                        10.12306/2020jms.0048
                    
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中圖分類(lèi)號(hào):P426
基金項(xiàng)目:昆山市社會(huì)發(fā)展科技計(jì)劃項(xiàng)目(KS1459);江蘇省大學(xué)生科技創(chuàng)新訓(xùn)練項(xiàng)目(201610300081X)

Deduction of short-duration designed rainstorm pattern in Kunshan City

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基于2008—2016年昆山市自動(dòng)氣象站逐分鐘降水觀測(cè)數(shù)據(jù),分別利用芝加哥雨型法和Pilgrim&Cordery雨型法,推求昆山市不同生態(tài)系統(tǒng)在不同重現(xiàn)期下60 min和120 min短歷時(shí)設(shè)計(jì)暴雨雨型,并對(duì)比分析兩種雨型推求方法的結(jié)果以及不同生態(tài)系統(tǒng)的雨型計(jì)算結(jié)果。結(jié)果表明:推求昆山市60 min歷時(shí)設(shè)計(jì)暴雨雨型分布時(shí),芝加哥雨型法和Pilgrim & Cordery雨型法的結(jié)果基本一致,為單峰型雨型,雨峰位置位于中間偏前;推求120 min歷時(shí)設(shè)計(jì)暴雨雨型分布時(shí),芝加哥雨型法結(jié)果為單峰型,Pilgrim & Cordery雨型法為多峰型,但兩種方法求得的雨峰位置都位于中間偏前。在歷時(shí)60 min和120 min時(shí),芝加哥雨型法計(jì)算出的平均最大分段降水量顯著大于Pilgrim & Cordery法和實(shí)際雨樣的結(jié)果,Pilgrim & Cordery法的結(jié)果略小于實(shí)際雨樣。昆山市不同地區(qū)的降水會(huì)受到生態(tài)系統(tǒng)類(lèi)型的影響,以農(nóng)田生態(tài)系統(tǒng)的影響最為明顯,兩種雨型推求方法的結(jié)果均表示,農(nóng)田生態(tài)系統(tǒng)的最大分段降水量是5種生態(tài)系統(tǒng)中最大的。

Abstract:

Based on the minute-by-minute precipitation observation data of Kunshan automatic meteorological stations from 2008 to 2016, designed rainstorm pattern of different ecosystems in Kunshan City for the durations of 60 minutes and 120 minutes were deduced with the Chicago method and the Pilgrim & Cordery method, meanwhile, the two methods and the results of rain pattern calculation in different ecosystems were compared and analyzed. Results show that when inferring the designed rainstorm distribution of 60 minutes in Kunshan, the results of the Chicago method and the Pilgrim & Cordery method are basically the same. Both of them are unimodal rain patterns, and the rain peaks are located in the front. When inferring the design rainstorm distribution of 120 minutes, the Chicago method is unimodal and the Pilgrim & Cordery method is multimodal, but the rain peak positions obtained by the two methods are located in front of the middle. During 60 minutes and 120 minutes, the average maximum segmental precipitation calculated by the Chicago method is significantly larger than those of the Pilgrim & Cordery method and actual rain samples, and the results of the Pilgrim & Cordery method are slightly smaller than the actual rain samples. Precipitation in different areas of Kunshan will be affected by ecosystem type, in which, the farmland ecosystem is the most obvious. The results of the two rain type estimation methods indicate that the maximum segmental precipitation of farmland ecosystems is the largest of the five ecosystems.

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汪婷,包云軒,陳粲,唐倩,吳俊梅,夏蘊(yùn)玉.昆山市暴雨短歷時(shí)設(shè)計(jì)雨型的推求.氣象科學(xué),2021,41(2):259-269 WANG Ting, BAO Yunxuan, CHEN Can, TANG Qian, WU Junmei, XIA Yunyu. Deduction of short-duration designed rainstorm pattern in Kunshan City. Journal of the Meteorological Sciences,2021,41(2):259-269

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收稿日期:2019-12-11
最后修改日期:2020-05-26
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在線發(fā)布日期: 2021-05-14
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