SACR-ADV-VADDopplerLidar(DL)

SACR-ADV-VADDopplerLidar(DL)DopplerLidar(DL) SACR-ADV-VAD

SACR-ADV-VADDopplerLidar(DL)

DataProduct

TimeResolu;on

HeightResolu;on

MaximumHeight

Condi;ons CurrentProductAvailability

SACR-ADV-VAD ~0.5hour 50m 15km Cloud/precipita;onscaLerers

Limitedandinevalua;on:ENA:201612–201702OLI:201612–201702SGP:201208PVC:201209TMP:201408

Sonde 6–12hour,sitedependent

~5–12m ~25km Nearlyall Rou;neatcentralfacility

InterpolatedSonde(IS)

1min 20m;coarserabove~3.5km

~25km Nearlyall Rou;neatcentralfacili;es,orsoon-to-be

RadarWindProfiler(RWP)

10min 62.5m ~1.6–2.2km Nearlyall

Limitedandinevalua;on:ENA:201505–201509,201605–201609SGP+BoundaryFacili;es:201505–201509,201605–201609

DopplerLidar(DL) 0.25–1hour 26m ~1.5–2.0km Nearlyall Rou;neatcentralfacility&boundaryfacili;es

TamiToto1,KarenJohnson1,Ka;aLamer2,ScoLGiangrande1,PavlosKollias31BrookhavenNa-onalLaboratory,2PennsylvaniaStateUniversity,3StonyBrookUniversity

Evalua;onofSACRADVanceVelocity-AzimuthDisplay(SACR-ADV-VAD)Value-AddedProduct

KASACR

Here,theVADtechniqueisappliedtotheKa-BandmillimeterwavelengthScanningARMCloudRadar(KASACR) in the SACR ADVance Velocity-AzimuthDisplay (SACR-ADV-VAD) Value-Added Product(VAP).TheVAPcomplementsinfrequentsoundingsbyprovidingprofilesofhorizontalwindspeedanddirecKon in-cloud every Kme the SACR operatesthe Hemispherical Sky Range-Height Indicator(HSRHI)scanstrategy.

Kollias,P.,N.Bharadwaj,K.Widener,I.Jo,andK.Johnson,2014:ScanningARMCloudRadars.PartI:OperaKonalSamplingStrategies.J.Atmos.OceanicTechnol.,31,569–582,doi:10.1175/JTECH-D-13-00044.1.

1.Evalua;onExample#1:SouthernGreatPlains(SGP)August4,2012 2.Evalua;onExample#2:EasternNorthAtlan;c(ENA)January16,2017

TheVelocityAzimuthDisplay(VAD)techniquehashistoricallybeenusedtoretrieveverKcalprofilesofthewindusingweatherradars (LhermibeandAtlas,1961).ScanningradarmeanDopplervelocityobservaKonsataconstantrangearecombinedtoesKmatewindspeedanddirecKonataparKcularheightabovetheradarlocaKon.

Abstract

WindSpeed

WindDirec;on

WindSpeed

WindDirec;on

InterpolatedSonde(IS)VAP SACR-ADV-VAD InterpolatedSonde(IS)VAP SACR-ADV-VAD

ISWindSpeed(m/s) ISWindSpeed(m/s)(SoundingTimes)

VADWindSpeed(m

/s)

DLWindSpeed(m/s)

VADWindSpeed(m

/s)

4.OtherCodeSprintSACR-ADVProductsSACR-ADV-QVP(Quasi-ver;calprofile) SACR-ADV-3D3C(3Dgridded&domaincloudfrac;on)

InterpolatedSonde(IS)VAP SACR-ADV-VAD InterpolatedSonde(IS)VAP SACR-ADV-VAD

VADWindSpeed(m

/s)

VADWindSpeed(m

/s)

ISWindSpeed(m/s)(SoundingTimes)

ISWindSpeed(m/s)

DLWindSpeed(m/s)

VADWindDirec;on

(deg)

ISWindDirec;on(deg)(SoundingTimes)

ISWindDirec;on(deg)

DLWindDirec;on(deg)

VADWindDirec;on

(deg)

VADWindDirec;on

(deg)

ISWindDirec;on(deg)(SoundingTimes)

ISWindDirec;on(deg)

DLWindDirec;on(deg)

VADWindDirec;on

(deg)

Lhermibe,RM,andDAAtlas.1961,"PrecipitaKonmoKonbypulseDopplerradar."Proc.9thWeatherRadarConf.,Boston,AmericanMeteorologicalSociety,Boston,Mass.,498-503.

Kollias,2014

QVPs of reflecKvity, differenKal reflecKvity, specificdifferenKalphase,correlaKoncoefficient,spectrumwidthandlineardepolarizaKonraKo

Reflec;vity,OLI,20160524

3.SummaryEvalua;onPlots:SGPAugust2012

Dataavailability:OLI:20160328-20160909

Tradi;onallyappliedtoplanposi;onindicator(PPI)scan

Here,appliedtoHSRHIscan

Browning&Wexler1968

Browning,K.;Wexler,R.ThedeterminaKonofkinemaKcproperKesofawindfieldusingDopplerradar.J.Appl.Meteorol.1968,7,105–113.

VADWindDirec;on

(deg)

VADWindDirec;on

(deg)

VADWindSpeed(m

/s)

VADWindSpeed(m

/s)

ISWindSpeed(m/s)(SoundingTimes)

ISWindDirec;on(deg)(SoundingTimes)

ISWindSpeed(m/s) ISWindDirec;on(deg)

VADvs.IS VADvs.ISatSoundingTimes

MaskedtomatchSACR-ADV-VADNoMask

MaskedtomatchSACR-ADV-VADNoMask

MaskedtomatchSACR-ADV-VADNoMask

MaskedtomatchSACR-ADV-VADNoMask

Sounding;mes

WindSpeed(m

/s)

WindSpeed(m

/s)

WindDirec;on

(deg)

WindDirec;on

(deg)

WindDirec;on

(deg)

WindDirec;on

(deg)

WindSpeed(m

/s)

WindSpeed(m

/s)

Sounding;mes

Sounding;mes Sounding;mes

•  GriddedreflecKvity•  GriddedmeanDopplervelocity•  Griddedspectrumwidth

•  CloudfracKon•  CFADs