Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF...

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Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever (CSU) and Ann Fridlind (NASA GISS) ACPC DCC Initiative Co-Chairs Model Setup and Experiment Design tested extensively by Peter Marinescu (CSU) and Bethan White (Oxford)

Transcript of Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF...

Page 1: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

HoustonCaseStudySpecificationsusingWRFandRAMS

SusanC.vandenHeever(CSU)andAnnFridlind (NASAGISS)

ACPCDCCInitiativeCo-Chairs

ModelSetupandExperimentDesigntestedextensivelybyPeterMarinescu(CSU)andBethan White(Oxford)

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ACPCWebsite

• www.acpcinitiative.org• Documentstobeposted– PeterMarinescu• ACPCmeetinginOxford(April2016)=>DCCroadmapdeveloped

• AppendixofDCCroadmaphasrecommendedCRMsetups

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ACPCDCCInitiative

Goals1. toincreaseourunderstandingoftheimpacts

ofaerosolsondeepconvectivestorms,and2. toenhancetherepresentationofthese

impactsincloud-resolvingmodels(CRMs)throughglobalclimatemodels(GCMs)

throughtheutilizationofauniquecombinationofobservationsandnumericalexperiments.

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KeyScienceQuestions• SQ1: Whatisthevariabilityoftheatmosphericresponse,bothlocallyandregionally,toaerosolperturbationsamongdifferentstate-of-the-artCRMs?

• SQ2:Whatphysicalprocessesarethemostsignificantcontributorstoaerosol-induceduncertaintiesincurrentCRMs,intermsofrepresentingaerosol-cloud-precipitation-climateinteractions?

• SQ3: Whatarethespatialandtemporalobservationsrequiredtocalculateaccurateestimatesofenergy,moisture,andaerosolfluxesonthescalesofaGCMgridbox?

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Approach

• PartI:Multi-ModelCaseStudySimulations• PartII:ObservationalAnalysis• PartIII:BoxClosureStudy

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Approach

PartI:Multi-ModelCaseStudySimulations• CasestudyfocusesonisolateddeepconvectionnearHouston,Texason19-20June,2013

• Favorabledueto:– Isolatednatureofdeepconvection– Localizedsourcesofaerosolparticlesevident

• EnsembleofdifferentCRMcasestudysimulationswithcleanandpollutedconditionswillbeevaluatedusingobservations

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Approach

PartI:Multi-ModelCaseStudySimulations• Thesimulationswillbeusedtoquantifythespreadintheresponsetoaerosolperturbationsamongtherangeofstate-of-the-artCRMs=>SQ1

• In-depthanalysisofindividualconvectivecellsandmicrophysicalprocesses(togetherwithobservationalanalysis)willprovidethephysicalreasonsfortheseresults=>SQ2

• ExtensivemodeltestingwithWRFandRAMStoassessappropriatesimulationsetups

Page 8: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

ModelConfiguration

Page 9: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

PhysicsParameterizations

Page 10: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

• 2Experiments=>1cleanand1polluted

• Clean:AP(z)=300cm-3 *exp(z/7000m)

• Polluted:AP(z)=1800cm-3 *exp(z/7000m)

Theseaerosolvaluesarebasedonconvectivecloudbaseclouddropletnumberconcentrationsestimatedviaasatellitealgorithmfromdataon19June2013case.DetailsofthisalgorithmcanbefoundinRosenfield etal.(2014).

AerosolExperiments

ImageprovidedbyDanielRosenfeld

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ModelOutputs

• Specificmodeloutputsarerequested• ThesimulationdatawillbearchivedwithinanACPCworkspaceonJASMIN,adatacenterfundedbytheNaturalEnvironmentResearchCouncil(NERC)andtheUKSpaceAgency(UKSA).

• Variousfrequenciesandformatsrequired

Page 12: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

ComparisonstoObservations• 3KMAGLRadarReflectivity:1800UTC

KHGX RAMS

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

Scatteredconvectivecellsdevelopinnorth-westernTexas

Page 13: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

ComparisonstoObservations• 3KMAGLRadarReflectivity:1900UTC

KHGX RAMS

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

Scatteredconvectivecellsdevelopinnorth-westernTexas

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ComparisonstoObservations• 3KMAGLRadarReflectivity:2000UTC

KHGX RAMS

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

ScatteredcellulardevelopmentshiftssouthwardnearHoustonarea

Page 15: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

ComparisonstoObservations• 3KMAGLRadarReflectivity:2100UTC

KHGX RAMS

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

ScatteredcellulardevelopmentshiftssouthwardnearHoustonarea

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ComparisonstoObservations• 3KMAGLRadarReflectivity:2200UTC

KHGX RAMS

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

ScatteredcellulardevelopmentshiftssouthwardnearHoustonarea

Page 17: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

ComparisonstoObservations• 3KMAGLRadarReflectivity:2300UTC

KHGX RAMS

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

ScatteredcellulardevelopmentshiftssouthwardnearHoustonarea

Page 18: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

ComparisonstoObservations• 3KMAGLRadarReflectivity:2400UTC

KHGX RAMS

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

Convectivecellsbecomelesswidespread

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ComparisonstoObservations• RadarReflectivityCFADs(06/191800UTC– 2400UTC)

– ConvectiveGridColumnsà 3KMAGLReflectivity>40dBZ

KHGXradardataprovidedbyMarcusvanLier-WalquiandAnnFridlind

June19,2013

Page 20: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

Approach

PartII:ObservationalAnalysis• Modelevaluation- bringsimulationsascloseaspossibletothenarrowlistofwell-observedquantitiesinordertofacilitateevaluation

• Observationswillbeusedbothinconjunctionwiththecasestudysimulations,andseparatelyasanothertooltostudyaerosol-cloudinteractions=>SQ2

• Detailsalreadycovered

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Approach

PartIII:BoxClosureStudy• CRMensembleprovidehighspatialandtemporalresolutiondatatoaddressfeasibilityofconductingaboxclosurestudyforaGCMgridbox,asoutlinedinRosenfeldetal.(2014).

• Simulationdatawillbeusedtocalculatepreciseenergy,moisture,momentumandaerosolfluxesacrossaregionrepresentingaGCMgridbox(~100x100kminhorizontalextentandtothetopofthetropopauseinverticalextent).

Page 22: Houston Case Study Specifications using WRF and … · Houston Case Study Specifications using WRF and RAMS Susan C. van den Heever ... 1.to increase our understanding of the impacts

Approach

PartIII:BoxClosureStudy• Hypotheticalfieldcampaignsamplingtechniqueswillbeappliedtomodeldatatodeterminetemporalfrequencyandspatialresolutionofobservationsnecessarytocalculatesyntheticfluxmeasurements=>SQ3

• Thelarge-scaleGCMboxfluxmeasurementswillbecalculatedforallCRMsimulationsinordertoquantifyvariabilityinenergy,moisture,momentumandaerosolfluxestoaerosolperturbationsacrossthedifferentCRMs=>SQ1

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NextSteps• Encouragemodelinggroupstoparticipateinthestudy

• Only2simulationsareneededandthebasicsetupsaredescribedintheroadmap=>limitedmodeltinkering

• InitialresultsatACPCmeeting(April2017)• Finalizesimulationperformanceandanalysisbyendof2017

• SeveralDCCmanuscriptsplannedincludingadescriptionoffieldcampaignneeds


WRF Demo Nomovie

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WRF Model: Software Architecture WRF Tutorial, 8/16/01 John Michalakes, NCAR.

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WRF setup run - climatescience.org.au · WRF Tutorial, UNSW, Sydney, Australia November 2017. Mesoscale& MicroscaleMeteorological Laboratory / NCAR 2 WRF System Flowchart WPS wrf.exe

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By A. VAN DEN HEEVER · A. VAN DEN HEEVER Submitted in fulfilment of the requirements for the degree of Masters in Business Administration to be awarded at the Nelson Mandela Metropolitan

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Optimal Physics Parameterization Scheme Combination of the … · 2020. 1. 14. · 6 AdvancesinMeteorology ERA-Interim WRF-EM WRF-Conf7 WRF-Conf6 WRF-Conf5 WRF-Conf4 WRF-Conf3 WRF-Conf2

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The recent developments of WRFDA (WRF-Var) Hans Huang, NCAR WRFDA: WRF Data Assimilation WRF-Var: WRF Variational data assimilation Acknowledge: NCAR/ESSL/MMM/DAG,

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Running the WRF Preprocessing System - dtcenter.org the WRF Preprocessing System Michael Duda (as told to Dave Gill) 2007 WRF-NMM Winter Tutorial

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Development of WRF-CMAQ Interface Processor (WCIP) Seung-Bum Kim and Daewon W. Byun University of Houston Air Quality Modeling and Monitoring Center.

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WRF Modeling System Overview Jimy Dudhia. What is WRF? WRF: Weather Research and Forecasting Model –Used for both research and operational forecasting.

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