SAiscapableofreducinghighparameterdimensionthatmaylowerconvergenceefficiencyevencausingdimensionaldisaster.IntegratingSAwithoptimizationalgorithmisanadvisableapproach.Anotherefficientwayistheparallelizationinmodelcalibration.Considerableprogressintheenhan...[继续阅读]

    StatisticalsummaryshowsthatlanduseinUYRregioncanbeclassifiedinto23categories[Figure6-2(a)].Theregionisdominatedbygrassland(50.8%),openforest(9.95%),forestland(13.7%),andruralarea(3.52%).Inhighlandarea,landscapeiscoveredbylowdensitygrass,gobiandlandcap.For...[继续阅读]

    ThestudycasecombinedLH-OATandMOSCEM-UAforEasyDHMmodelcalibration.InEasyDHMmodel,29parameterswereincludedthatcanbedividedintoroutingandunderlyingrelatedcategories.ZhubacatchmentlocatedinupstreamofYangtzeRiverwaschosenforhydrologicalmodeling.7.1.1Sensitivit...[继续阅读]

    UYRissub-delineatedinto52geo-hydrologicalcatchments.TopologicalrelationshipisillustratedinFigure6-3(a).Meteorologicaldataiscollectedfrom15weatherstations[Figure6-3(b)]inUYRincludingdailyprecipitation,airtemperature,humidity,windspeedandsunshineprovidedbyC...[继续阅读]

    Thepresenceofhydrologicalmodelsismotivatedbypracticalengineeringproblems.Hydrologicalmodelingiscreatedtounderstandtherelationshipbetweenrainfallandrunoffinthelate19thcenturyaimingtosolveengineeringproblemslikeurbansewerdesign,drainagesystemsdesign,andspil...[继续阅读]

    Post-processingincludesLH-OATglobalsensitivityanalysis,singleormulti-objectiveparametercalibration,spatialdisplayandstatisticalanalysisofmodelresults.Thedevelopmentofautomaticparameterestimationmodulesallowstheusertoavoidthetediousmanualmodelcalibration,a...[继续阅读]

    ThisstudypresentedastudycaseondistributedwaterresourceassessmentonupstreamHanjiangRiver.Thestudyareawasdividedinto12routingrelatedcatchmentsalongtheupstreamreachofHanjiangRiver.Themodelwascalibratedbythecomparisonofsimulatedandobservedhydrographateachcatc...[继续阅读]

    Withthefastdevelopmentofhydrologicalmodel,themodelcomplexityhasbeenincreased.Comparedtoconceptuallumpedmodel,distributedhydrologicalmodelrequireshighercomputationalcapability.Meanwhile,overparameterization(Beven,1989),hypernonlinearparameterspacecancausee...[继续阅读]

    Infloodprediction,muchhigherrunofftimeseriesforecastingaccuracyisoftenrequested.Besides,theforecastingability,especiallytheforecastingintervallength,isalsoasignificantcriteriontobetakenintoconsideration.Inthisstudycase,theANNmodelhybridwaveletfunctionwasa...[继续阅读]

    Logically,catchment,rivernetwork,andcorrespondingattributesarethemainelementsweshouldobtainbeforewecansetupahydrologicalmodel.TheflowchartofhydrologicanalysiscanbeshowninFigure2-1.Indistributedhydrologicalmodeling,thefirstthingishydrologicalanalysisthatis...[继续阅读]