TOPROF MC/WG, Dublin, Sept. 4, 2017

TOPROFWG3:Microwaveradiometers(MWR)

NicoCimini,UlrichLöhnert,BernhardPospichal,HaraldCzekala,PaulineMartinet,Franciso DeAngelis,Umar Saaed,

NilsKüchler,Leif-LeonardKliesch,OlivierCaumont,AlexanderHaefele,Henk Klein-Baltink,FranciscoNavas and

many others

ActivitiessincelastMCmeetinginVarna

(including2SWGand1STSM)

TOPROF MC/WG, Dublin, Sept. 4, 2017

Objectives WG3O1) EstablishoperationalproceduresforMWR:protocolsforcalibrationprocedures,measurementconfigurationandmaintenanceO2) Implementanetwork-wideMWRharmonized dataprocessingchaintoprovidequality-controlleddata forfirstO-BstatisticsanddataassimilationtrialsO3) Optimizeretrievalssuitablefornetworkuse

• temperatureprofiles• humidityprofiles• integratedwatervaporandcloudliquidwaterpath• boundarylayerheight

TOPROF MC/WG, Dublin, Sept. 4, 2017

WG3CloudRadar&Radiometer(O1)

AW-bandradar-radiometersystemforaccurateandcontinuousmonitoringofcloudsandprecipitation

NilsKüchler,StefanKneifel,andUlrichLöhnert,Pavlos Kollias,Harald Czekala andThomasRose

Earlyon-linerelease:JournalofAtmosphericandOceanicTechnology

https://doi.org/10.1175/JTECH-D-17-0019.1

TOPROF MC/WG, Dublin, Sept. 4, 2017

SWGWG3(O2)Statusandnextstepstowardstheassimilationofground-based

MWRobservations(DWD,12-14December,2016)

Decisionstaken1. MWRnet stationstocommittoadailysubmissionofMWRdata2. Operatorforum3. Newdevelopmentsonreal-timedatastreaming&monitoring4. Long-termmonitoringofMWRdataonadailybasis(O-B)5. EUMETNET/E-PROFILE- proposalfornextphasestarting2019 &

maintenanceofRTTOV-gb6. Assimilation,definitionofbusinesscaseà activitiesin

cooperationwithDWD

TOPROF MC/WG, Dublin, Sept. 4, 2017

PublicationonO-BStatistics(O2)MC6A9 Providelevel1microwavedatafor2014forthefollowingstations:Payerne,Lindenberg,Cabauw,Juelich,Leipzig,&Paris• Submittedpublicationononeyearoflevel1O-Banalysis(basedon

RTTOV-gb)• DeAngelis etal.LongtermObservationsminusBackgroundmonitoring

ofground-basedmicrowaveradiometernetwork.Part1:BrightnessTemperatures

• Firstreviewspositive,secondsubmissionunderreview

TOPROF MC/WG, Dublin, Sept. 4, 2017

DeAngelisetal.2017(O2)

TOPROF MC/WG, Dublin, Sept. 4, 2017

STSM1WG3– AdvancedRetrievals(O3)One-yearof1DVARretrievalsfromground-basedmicrowave

radiometers(10-14April2017)

PaulineMartinet1(Météo France)visitingDomenico Cimini (IMAA-CNR)

à Prepareaprocessingchainflexibletoperform1DVARretrievalsondifferentsiteswithdifferent

instrumentalconfigurations.

TOPROF MC/WG, Dublin, Sept. 4, 2017

Softwaretoolsdeveloped(DeAngelis /Martinet/Cimini)Ø RTTOV-gb

- fastFMforground-basedMWR- Ingestsatmosphericprofiles- ComputesTbandJacobiann

Ø 1DVAR- fastinversionscheme- Ingestsground-basedMWRobs- ComputesretrievalsofTandHprofilesandLWP

Ø Net1D- network1DVARretrievals- Ingestsground-basedMWRobs fromanetwork(curr.6nodes)- Computes1DVARretrievalsconsistentthroughoutthenetwork

AdvancedRetrievals(O3)

TOPROF MC/WG, Dublin, Sept. 4, 2017

STSM2WG3– RTTOV-gb Application(O2)CouplingtheRTTOV-gb withCOSMO-DE(reanalysis)

(26-30September,2016)

MariaToporov (UniversityofCologne,Germany)visiting

FrancescoDeAngelis(Cetemps – UniversityofL’Aquila,Italy)

àCoupleRTTOV-gb toCOSMOenvironmentfor1.)synergeticretrievalstudies

2.)DAassimilationtrialsintheCOSMOKENDAenvironment

(bothcurrentlyon-going)

TOPROF MC/WG, Dublin, Sept. 4, 2017

STSM2WG3– RTTOV-gb Performance

Bias(black),standarddeviation(red),andRMS(blue)ofdifferencesbetweenTbsimulatedwithRTTOV-gb andLBLmodelforclearskyconditionsandat90° elevationangle.Left:K-bandchannels.Right:V-bandchannels.

89COSMOclear-skycases

TOPROF MC/WG, Dublin, Sept. 4, 2017

STSM2WG3– RTTOV-gb Jacobians

Absolute humidity (left) and temperature (right) Jacobians,calculated with K-module of RTTOV-gb for 14 HATPROfrequencies

TOPROF MC/WG, Dublin, Sept. 4, 2017

STSM2WG3– RTTOV-gb retrievalapplicationsforatmosphericstability

TOPROF MC/WG, Dublin, Sept. 4, 2017

AIsfromVarnaMeeting(O1)MC6A5 Softwareadaptationbymanufacturerstocharacterizeuncertainties+driftbetweencalibrations+appliedoffset;tobeincludedinthedatastreamEndof2016Manufacturersofmicrowaveradiometers

Status:on-goingsoftwaredevelopmentatRPG(noimplementationyet),butadjustmentsasrecommendbyWG3willbeincluded(Czekala)• regularchannelcovariancedetermination(ambient/coldcalibrationload)• improvedabsoluteuncertaintycharacterization• automaticmonitoringofinstrumentstabilityforusers• advancedspectralconsistencychecksfordataqualitymonitoring

TOPROF MC/WG, Dublin, Sept. 4, 2017

AIsfromVarnaMeeting(O1)MC6A6 EachWGtoproduceasketchofthedataflow(whichsoftwareandformatandsoftware,atvariouslevels(0,1,2,..)

mwr_pro (MicroWave RadiometerPROcessing)• version4downloadableatftp://gop.meteo.uni-

koeln.de/pub/loehnert/mwr_data_flow/• withbasicinstructions(includingexampledata)• Alsoavailable:exampleoutputfilesgeneratedby

mwr_pro

TOPROF MC/WG, Dublin, Sept. 4, 2017

mwr_pro data flow

Read rawdata from

MWR

Applymulti-

variateretrievals

Qualitycontrol

Store level1 & 2 datato netcdf

(dailybasis)

Visualize data on-line (also via web)

ü Needsite-specificmulti-variate regressionretrievals• Alternatively:Neuralnetworkor1D-Var(planned)

NeedIDLroutinetailoredtoinstrumentoutputformatü RPG• Radiometrics (planned)

ü manualfilter(“byeye”)ü user-definedthresholds(level1andlevel2)ü “housekeeping”dataü rainflagsfromprecipitationsensor• spectralconsistencychecks(planned)

ü Accordingtonetcdf CF1.6conventionadditionallyfulfillingtherequirementsofSAMD

TOPROF MC/WG, Dublin, Sept. 4, 2017

mwr_pro data structure

• verticallyintegratedproducts

• mwr_l2_prw:path-integratedwatervapor(IWV)

• mwr_l2_clwvi:path-integratedliquidwater(LWP)

level2-columns

• brightnesstemperatures(tb)• mwr_l1_tb:inspecifiedazimuthandelevationdirections

• mwrBL_l1_tb:boundarylayerscans(RPGspecific)

level1

• mwr_l2_ta:temperatureprofilesalongspecifiedazimuthandelevationdirection

• mwr_l2_hum:humidityprofilesalongspecifiedazimuthandelevationdirection

• mwrBL_l2_ta:temperatureprofilesinzenithfromboundarylayerscans

level2- profiles

TOPROF MC/WG, Dublin, Sept. 4, 2017

AIsfromVarnaMeeting(O1,O2)

MC6A8WG3toMC:RequesttoRPGtodiscussthedatastructurefromtheMWRtoensureitiscompatiblewithE-profilerequirements

• discussedatSWGStatusandnextstepstowardstheassimilationofground-basedMWRobservations(DWD,12-14December,2016);currentmwr_pro datastructureasfirstattemptforfirstE-profileapplications

• RAGNAR-Server(RPG)softwareimplementationplanned:makedatafromacertainsitedirectlyaccessibletoNWS

TOPROF MC/WG, Dublin, Sept. 4, 2017

PlannedContentsoffinalreportWG3• Suggestions to manufacturers for improving hardware and

software• HATPRO – G5• Calibration campaign; new calibration load• ODIN/RAGNAR software developments at RPG• Spectral consistency checks

• MWR Operation procedure suggestion• RTTOV-gb development• O-B operational setup • 1DVAR development – NET1D• ABL classification (U. Saaed / M. Collaud Coen)• Link to associated projects initiated in TOPROF time

• ACTRIS CC connection; microwave calibration center• EUMETNET/E-PROFILE - business case possible

• Check publications & conferences participations (TOPROF)