Page 92 - 《水资源与水工程学报》2024年第6期
P. 92
!35 "!6 # & ' ( ) & * + , - Vol.35No.6
2024 $ 12 % JournalofWaterResources&WaterEngineering Dec.,2024
DOI:10.11705/j.issn.1672-643X.2024.06.09
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3IJKL:P641.8 MNOPQ:A MRSL:1672643X(2024)06008810
Uncertaintyofglobalclimatemodelassessmentfor
groundwaterstorageinnortheastChina
2
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1
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WANGHaiqing ,QIPeng,ZHANGGuangxin,CHENYuexin
(1.SchoolofHydraulicandElectricPower,HeilongjiangUniversity,Harbin150080,China;2.KeyLaboratoryofBlackSoilConservation
andUtilization,NortheastInstituteofGeographyandAgroecology,ChineseAcademyofSciences,Changchun130102,China)
Abstract:Ensemblebasedglobalclimatemodels(GCMs)arecommonlyusedforpredictinghydrological
variables,butthediversityofGCMsintroducessignificantuncertaintyinmodelpredictions.Thus,this
studyemploysthelongshorttermmemory(LSTM)modelcombinedwithensemblepredictionsfromseven
GCMstoforecastmonthlygroundwaterstorage(GWS)inthenortheastregionunderfourscenariosfrom
2022to2100.Resultsindicatethatthe GWSinthenortheastregionexhibitsageneralincreasingtrend,with
thehighestgrowthrateof0.20mm/aundertheSSP585scenariothroughequalweightaveraging.However ,
significantspatialandtemporaldifferencesareobservedintheoutputresultsofdifferentGCMs,withthe
maximumdifferenceintrendsreaching0.33mm/a.Using44°Nastheboundary,allGCMsshowaconsist
enttrendofdecreasing GWSinthesouthandincreasingGWSinthenorthcomparedtothehistoricalperiod
underdifferentscenarios.ThefindingsofthisstudycanshedsomelightontheapplicationofGCMsincli
matesimulationandthepredictionoffuturegroundwaterstorageinnortheastChina.
Keywords:groundwaterstorage;globalclimatemodels(GCMs);coupledmodelintercomparisonproject
phase6(CMIP6);longshorttermmemory(LSTM);northeastChina
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