the whistler radar - knmi：惠斯勒雷达knmi

《the whistler radar - knmi：惠斯勒雷达knmi》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、RadarQualityControlandQuantitativePrecipitationEstimationIntercomparisonProjectStatusPaulJoeEnvironmentCanadaCommissionofInstruments,MethodsandObservations(CIMO)UpperAirandRemoteSensingTechnologies(UA&RST)OutlineProjectConceptTheProblemOverviewofDataQualityTechniqu

2、esPre-RQQIResultsStatusExternalFactorsSegmentingtheDQAdjustmentAlgorithmsWindTurbinesRLANRVdilemmaNoiseConversionto“P”DatacorrectionZDRcalibrationAntpolerrors;NoiseprocessingOrographicenhancementRecursiveissues!SegmentingtheDQProcessforQuantitativePrecipitationEstim

3、ationRemoveArtifacts-CleanedUp3DvolumeEstimatingSurface/3DReflectivityEstimatingSurface/3DPrecipitationMosaicingSpace-TimeEstimationFocusonReflectivityNowcastingClearAirEchoasInformationRadarDQisnotjustaboutQPENowcastingNon-precipitatingechoes/insectsDataClassifica

4、tionRadarDataforNWPReflectivity,radialvelocityassimilationVADWindsSegmentingtheDQProcessRemoveArtifacts-CleanedUp3DvolumeEstimatingSurface/3DRadarMomentsEstimatingSurface3DPrecipitation(Classification)MosaicingSpace-TimeEstimationin3DReflectivityRadialVelocityDual-P

5、olarizationSomeExamplesEveryradarhasclutterduetoenvironment!SeaClutterandDuctingElectromagneticInterferenceTechniquesCAPPIisaclassictechniquetoovercomegroundclutterVVO5o43210Linesareelevationanglesat1ospacing,orangeisevery5o.CanadaAustraliaU.S./ChinaVCP21WhistlerVal

6、leyRadar3.0CAPPI1.5CAPPIThereareavarietyofScanStrategies(CAPPIProfiles)MakebetterordropTheelevationanglesbutnatureofweatherimportantforCAPPI2.5o1.5o0.5oPPI’s1.5kmCAPPIDopplerZeroVelocityNotchDopplerVelocitySpectrumPulsepair(timedomain)FFT(frequencydomain)2.Reflecti

7、vitystatisticsBeforeAfterDopplerFilteringSNOWRAINToomuchechoremoved!However,betterthanwithoutfiltering?DataProcessingplusSignalProcessingTexture+FuzzyLogic+SpectralDixon,Kessinger,HubbertDataProcessingplusSignalProcessingFUZZYLOGICRemovalofAnomalousPropagationNONQCQ

8、CLipingLiu,CMATheMetricofSuccessIso-range“Variance”asanintercomparisonMetricDanielMichelson,SMHIAccumulation–awinterseasonlog(Raingauge-Ra