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:1672643X(2024)06008810
                              Uncertaintyofglobalclimatemodelassessmentfor
                                    groundwaterstorageinnortheastChina


                                                                           2
                                                       2
                                                                                          1
                                            1,2
                              WANGHaiqing ,QIPeng,ZHANGGuangxin,CHENYuexin
           (1.SchoolofHydraulicandElectricPower,HeilongjiangUniversity,Harbin150080,China;2.KeyLaboratoryofBlackSoilConservation
               andUtilization,NortheastInstituteofGeographyandAgroecology,ChineseAcademyofSciences,Changchun130102,China)
               Abstract:Ensemblebasedglobalclimatemodels(GCMs)arecommonlyusedforpredictinghydrological
               variables,butthediversityofGCMsintroducessignificantuncertaintyinmodelpredictions.Thus,this
               studyemploysthelongshorttermmemory(LSTM)modelcombinedwithensemblepredictionsfromseven
               GCMstoforecastmonthlygroundwaterstorage(GWS)inthenortheastregionunderfourscenariosfrom
               2022to2100.Resultsindicatethatthe GWSinthenortheastregionexhibitsageneralincreasingtrend,with
               thehighestgrowthrateof0.20mm/aundertheSSP585scenariothroughequalweightaveraging.However ,
               significantspatialandtemporaldifferencesareobservedintheoutputresultsofdifferentGCMs,withthe
               maximumdifferenceintrendsreaching0.33mm/a.Using44°Nastheboundary,allGCMsshowaconsist
               enttrendofdecreasing GWSinthesouthandincreasingGWSinthenorthcomparedtothehistoricalperiod
               underdifferentscenarios.ThefindingsofthisstudycanshedsomelightontheapplicationofGCMsincli
               matesimulationandthepredictionoffuturegroundwaterstorageinnortheastChina.
               Keywords:groundwaterstorage;globalclimatemodels(GCMs);coupledmodelintercomparisonproject
               phase6(CMIP6);longshorttermmemory(LSTM);northeastChina

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