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COSMO WG3b

This project aims to consolidate the results of PP.CALMO and provide a community tool for calibrating unconfined model parameters in COSMO-CLM. The method, which has been used by ETHZ and a Chinese group with WRF, has shown up to 30% improvements in precipitation scores for a monsoon case over Beijing. The paper is available in BAMS (May 2017). A workshop will be held in Athens in January.

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COSMO WG3b

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  1. COSMO WG3b Jean-Marie Bettems / MeteoSwiss Offenbach, COSMO SMC, January 2018

  2. PP CALMO-MAX • Calibrationofunconfinedmodelparameters • Antigoni Voudouri / HNMS, 06.2017 – 09.2019 • Consolidateresultsof PP CALMO, providecommunitytool • Strong interestofProf C. Schaer/ ETHZ group • This methodisusedat ETHZ toperiodicallycalibrateCOSMO-CLM • Similar method used by Chineese group with WRF • Up to 30% improvements of precipitation scores for moonsoon case over Beijing • Paper available in BAMS / May 2017

  3. PP CALMO-MAX • Twoand a half daysworkshop at Athens beginningofJanuary • Omar / ETHZ (original development), Yoav / IMS, Edoardo / CIRA, Euripides, Antigoni, Flora, DImitra / HNMS, Jean-Marie / MCH • Veryusefuldiscussions, minuteshavebeendistributed • Goodexampleof COSMO collaborationandknowledgetransfer • Task 2.1 on track(COSMO-1 calibration on Daint / CSCS) • Calibrating6 parametersofproductionconfigurationof COSMO-1 • Withimprovementof meta-model andperformancefunction • In depthverificationshoulddefinitelyshowtheusefulnessofthemethodforimprovingtheforecastquality

  4. PP CALMO-MAX • Meta-model • On COSMO web and on GitHub in publicrepository • Common developmentbetween IMS and ETHZ • Octave versioncoming ( ECMWF) • Extension of meta-model andperformancefunction (TBE) • Considermodel internal variabilitytofilternoise • Use 6h insteadof 24h accumulatedprecipitation (dailycycle) • Add precipitation FSS toconstraintprecipitationspatialstructures • Add 2m humidityconstraint (toavoidoverfitting 2m temperature) • Add sunshinedurationconstraint

  5. PP CALMO-MAX • Computing costofthemethod • Runningcalibration in hindcastmodesignificantlyreducesthecostofthemethod (andsimplifythe experimental setting). • Itispossibleto fit the MM withtheminimumnumberofsimulations,namely 2*N + N*(N-1)/2 + 1 for N parameters. • Ifthesoilmemoryis not an issue, sampling a fullyearwithrepresentativedays will considerablyreducethecostofthemethod; otherwise a fullyearismostprobablyrequired. • Impact ofcalibratingwith a reduceddomainsize will beevaluated. • Case study: C1 calibrationfor 6 parameters: Useoneyearhindcastwith 0.5 time domainextension:calibrationrequiresabout 8 years operational configurationequivalentIsitmuch? …similar to MOS or EPS calibration requirements…Lessthan 2 weeks time on a machine with 1000 GPU’s

  6. PP CALMO-MAX • Suggestion fordocumentationofmodeltuningparameters • Table on COSMO web, ideallyfilledupduringdevelopmentphase • Includingparametersimplementedas hardcodedvalues! • Withshortdescription, default, minimumandmaximumvalues • Includinginformationaboutmodelsensitivity(summer/winter, different targetareas) • Preliminarystepsdone in CALMO / CALMO-MAX • Shouldbecome a permanent taskof COSMO

  7. PT TERRA Nova / MSc Verena / PhD Daniel • PT TERRA Nova, 09.2016 – 06.2018, Y. Ziv / IMS MsC Verena, 12.2017 – 05.2018, Prof. Seneviratne / ETHZ • document TERRA performance, comparewith CLM performance • comparev5.0 / v5.05 conservative / v5.05 aggresive/ CLM • Simulationswith TERRA v5.0 (EU, RU @ 7km) and CLM (EU @ 7km) performedandbeinganalyzed (MCH toolforstandardverification, additional verification). • Additional simulationswithlatest TERRA and on Eastern Mediteraneandomainareplanned, but only @ 7km. • PhD Daniel Regenass, 01.2018 – 12.2020, Prof. Schär / ETHZ • first stepis to test Linda Schlemmer developments in NWP mode(topo dependent water table  strong positive effect on climate simulations) • nexttasksstill open, but goal is to address MCH specificshortcomings • commonmeeting with all stakeholderstook place at ETHZ on Jan. 16 • use TERRA Nova test bed

  8. PT AEVUS • Urban parameterizationfor operational NWP • Paola Mercogliano / CIRA, 09.2017 – 09.2018 • based on Hendrik Wouters bulkmodel • Code baseis COSMO 5.04g, plus thelatestURB developmentbyHendrik (TERRA-URB v2.3), including all knownbug fixes developedfortheclimateversion • Code baseisready (thanksto Uli S) • Sanitycheck ofthisnewreleaseisbeeingperfomedbythe PT team • Proposalforextensionof PT till 12.2018 will bemadesoon • Announcing:AEVUS meetingICCARUS / WednesdayFebruary 28th(chairPaola Mercogliano)

  9. PT SAINT • Validateand update themulti-layersnowmodeltomakeitproductionready • Sascha Bellaire / SLF, 07.2017 – 06.2019 • fullsupportofSLF (Prof. Michael Lehning) • Code baseisCOSMO 5.04g, plus thelatest SAT developmentby Matthias (in particulartheimplicitformulationofthenearsurfaceheatbudget) • Code baseisready (thanksto Uli S.), codehasbeenanalysedbySascha whoisnowevaluating different options ( discussionwith DWD colleagues) • Martin Koehler will prepare an environment at ECMWF fortestswith global ICON (but not beforeautumn 2018) • Announcing:SAINT meetingICCARUS / ThursdayMarch 1st(chairSasha Bellaire)Withparticipationof Matthias, Ekaterina … (?)

  10. SNOWE andsnowanalysis • SNOWEdefinedas COSMO softwarebyStC • fullfeaturedsnowanalysispackage, incl. snowdensity • developedandmaintained at RHM • codeanddocumentationavailable on COSMO sitehttp://www.cosmo-model.org/content/support/software/default.htm • usedforproduction at RHM • Announcing:Snow analysisfor COSMO – Status & plan ICCARUS / ThursdayMarch 1st(chairJuergen Helmert)

  11. EXTPAR • In its March 2017 meeting the COSMO StC has nominated Katie Osterried, working at ETHZ for C2SM, as Source Code Administrator • The official source code is available in a private repository in the C2SM organization on GitHub : https://github.com/C2SM-RCM/extpar(latest release is v4.0) • Automatic testing using DWD and MCH configurations is implemented at CSCS (using Jenkins tool, all raw data available at CSCS) • Currently different versions of the code exist at DWD and at MPI  • Currently GRIB output is not working correctly (but NetCDF is ok)

  12. EXTPAR Next milestones(spring 2018) • Code synchronizationwith DWD and CLM community(Katie is in contactwith Juergen Helmert) • Improvedocumentation on COSMO web, incl. softwareaccessanddifferencesbetween COSMO andICON usage • Review supportofGRIB output(remove GRIB 1 support? correctorremove GRIB 2 support?) • Onceunifiedversionisavailable, startevaluating & integratingICONdevelopments

  13. TERRA Standalone • StandaloneTERRA module, based on COSMO v5.03 • Maintainedby IMS (besteffort) • Code anddocumentationavailable on COSMO sitehttp://www.cosmo-model.org/content/support/software/default.htm • Usedtoprovidebalanced initial conditionsofthesoil(cheap multi-yearssimulationsarefeasible) • Updatetolatest COSMO releaserequiredfor NWP testsuite (asap) andfor CALMO-MAX (early 2019) • New block structure • IMS could provide resources in 2018Q3, but not before • Possible resources from MCH (to be discussed internally)

  14. Andothertopics… • Mire parameterization • experimentsin ICON showed neutral impact • theSMC hasapprovedtheimplementationofMIRE in COSMO v5.06 • Phenology • phenology model by Stöckli et al. (2011) provides daily LAI maps (using history of relevant NWP model parameters) • using the phenology model instead of the current LAI climatology has a significant impact on surface fluxes (15 Wm-2 / LAI)and T2m (0.5 K / LAI) • … but currently no resources to follow-up on thiswork • SRNWP datapool • Data basebeeingupdatedfor a coupleofstations (LIN, PAY, CAB) • …verylowusage … action dying (?)

  15. Fieldextra Jean-Marie Bettems / MeteoSwiss Offenbach, COSMO SMC, January 2018

  16. Fieldextra Release 12.7.0 ( availabilitybeginingFebruary) • [requestDWD] Add additional supportforCOSMO- / ICON-ART • definitiontemplates 44, 45, 46, 47 (aerosol) • definitiontemplates 48, 49 (aerosolopticalproperties) • definitiontemplates 57, 58, 67, 68 (chemicalconstituentswithdistributionfunction) • new GRIB 2 keys in dictionary : 'aerosolType', 'modeNumber', 'distFuncType‘ • [requestReMet] Add fullsupportoforiginatingcenter 'Roma', incl. localuse(was previously limited toCOSMO-LEPS), bitmap inGRIB 1 inputrecords, COSMO-IT-EPS model • ImproveOpenMPperformances • Add outputsubset 'slice', togenerateverticalcross-sectionsalonga userspecifiedpathandproduce an appropriateNetCDFoutput • Support tracerinterpolationfrom C7 to C1 (pollen LBC) • … full listavailable on GitHub

  17. Towards v13.0.0 ( 2018) Add NetCDF import (limited to COSMO type output) Provide more commented examples ( user friendliness) Improve regression tests & automatic build ( code quality) Examine software life cycle & further planning ( sustainability) Many possible development lines (optimization, code consolidation / clean-up, simplify usage…) Organize workshop with stakeholders? Fieldextra features environment

  18. AOB Jean-Marie Bettems / MeteoSwiss Offenbach, COSMO SMC, January 2018

  19. INT2LM / INT2LM-ART / fieldextra Whichroleforwhichprogram? • Twocasestointroducetheproblem • Pollen interpolationfrom COSMO-7 to COSMO-1 toprovide LBC(but theremainingfieldsareinterpolatedfrom IFS) • T2M interpolationfrom COSMO-7 to COSMO-1 toprovide UBC forTSA(tocomputebalanced initial conditionsfor CALMO-MAX) • INT2LM isTHEinterpolationtool, but … • not possibletorestrictthesetofinterpolatedfieldstothepollenfields( performanceissue) • diagnosticfieldsare not interpolated • Bothtasksarepossiblewithfieldextra, but … • humanresources are an issue if more tasks are assigned to fieldextra • Make INT2LM / INT2LM-ART more flexible ? Findadditionalresources for fieldextra?  SMC / TAG opinion isrequested

  20. INT2LM / INT2LM-ART / fieldextra Whichroleforwhichprogram? • Twocasestointroducetheproblem • Pollen interpolationfrom COSMO-7 to COSMO-1 toprovide LBC(but theremainingfieldsareinterpolatedfrom IFS) • T2M interpolationfrom COSMO-7 to COSMO-1 toprovide UBC forTSA(tocomputebalanced initial conditionsfor CALMO-MAX) • INT2LM isTHEinterpolationtool, but … • not possibletorestrictthesetofinterpolatedfieldstothepollenfields( performanceissue) • diagnosticfieldsare not interpolated • Bothtasksarepossiblewithfieldextra, but … • humanresources are an issue if more tasks are assigned to fieldextra • Make INT2LM / INT2LM-ART more flexible ? Findadditionalresources for fieldextra?  SMC / TAG opinion isrequested

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