Page 5 - 《水资源与水工程学报》2022年第3期
P. 5
!33 " ! 3 # & ' ( ) & * + , - Vol.33No.3
2022 $ 6 % JournalofWaterResources&WaterEngineering Jun.,2022
DOI:10.11705/j.issn.1672-643X.2022.03.01
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8IBJK:P458.1 21.1;P426.62 LMNOP:A LQRK:1672643X(2022)03000111
Simulationanalysisofmaximum hourlyrainfallprocessinZhengzhou
rainstorm centerbasedonWRF
1,2
1
1
ZHANGJinping ,ZENGMuxiang,GUOYuan
(1.CollegeofHydraulicScienceandEngineering,ZhengzhouUniversity,Zhengzhou450001,China;2.StateKeyLaboratoryof
SevereWeather ,ChineseAcademyofMeteorologicalSciences,Beijing100081,China)
Abstract:InordertoexploretheperformanceofWRF(weatherresearchandforecasting)modelonthe
simulationofmaximumhourlyrainfallprocessattherainstormcenterofZhengzhouCity ,weselectedfive
commonmicrophysicalprocessschemestosimulatethe14shorttermrainstormsthatoccurredinZheng
zhouCityfrom2011to2018 ,andanalyzedtherainfallcharacteristicsincombinationwiththetemporal
andspatialdistribution,rainpattern,rainfallpeakvalueandrainfallconcentration.Theresultsshowthat
theWRFmodelcansimulatetherainfallofthecorrespondingevent,butwithadeviationattheposition
oftherainarea ,andthetimedeviationsoftherainfallprocessformorethan60% oftheeventsareless
than180min.Themodelperformswellatthesimulationoftheaccumulatedrainfall ,withahighcorrela
tiontotherainfallprocess ,butlackingtheabilitytosimulatetheprocessrainfallamount.Accordingto
rainpatternanalysisproducedbythefuzzyrecognitionmethod ,theWRFmodelperformswellatthesim
ulationofsinglepeakrainstorm patterninZhengzhouCity ,butpoorlyattheuniform rainfallpattern.
WhentheWRFmodelisusedtosimulatethesinglepeakrainfallpattern,therainpeakdeviationcanbe
controlledwithin±30%.Thesimulatedrainfallconcentrationof13rainfalleventsareconsistentwiththe
actualmeasurements.ResearchshowsthattheoverallsimulationresultsoftheWRFmodelareideal ,
whichcanprovidenumericalmethodsupportforthestudyofshorttermrainstormsinZhengzhouCity.
Keywords:maximumhourlyrainfallprocess;WRF(weatherresearchandforecasting)model;rainfall
simulation ;rainstormcenter;fuzzyrecognitionmethod;characteristicsofrainstorm pattern;Zhengzhou
City
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