GEWEX DATA ANALYSIS PANEL: An Overview and New Vision
RémyRoca(CNRS) and TristanL’Ecuyer(UW-AOS)[email protected] [email protected]
GDAP Mission CoreMission• SponsorproducGonandanalysisofsatellitedatasets(e.g.ISCCP,GPCP,SeaFlux,LandFlux)
• Overseedatasetassessmentstoprovidecri@caluncertaintyinforma@onfordatarecords• Assessadequacyofcurrentobservingsystemsandiden@fygaps/futureneeds
• Supportgroundbasednetworks(e.g.BSRN,GPCC)
• ActasaninterfacebetweenGEWEXac@vi@esanddatasets• PROES,GAP,GEWEXpanels• NewEarth’sEnergyImbalanceini@a@ve
• RepresentGEWEXatvariousWCRPmee@ngs,WMO,andotherrequests• OutreachtovariousotherbodieswithinWCRP• StronglinkstoWMO/CGMSworkinggroups
• GVAPmeetsduringITGW• co-chairofICWGisamemberofGDAP• JointIPWG/Assessment• RémyRocasitsinWDACjointlyheldwithWGClimate
• Coordina@onwithGCOS(althoughitneedsimprovement)
The GDAP Ac@vi@es PorAolio PanelmembersRémyRoca,chairTristanL’Ecuyer,vice-chairWouterDorigoAndrewHeidingerSeijiKatoChris@anKummerowHirohikoMasunagaIsabelTrigoClaudiaStubenrauchTianjunZhou
GrounddatanetworkWouterDorigo ISMNA.BeckerandUdoSchneider(DWD) GPCCChuckLong(NOAA) BSRNJimMather(ARM) ARM
«GEWEX»datasetsproducGonPaulStackhouse SurfaceRadia@onBudgetBobAdler GlobalPrecipita@onClimatologyProject(GPCP)StefanKinne GlobalAerosolClimatologyProject(GACP)CarlosJimenez LandFluxCarollAnnClayson SeafluxBillRossowandNOAANCEI ISCCPPBrownandCKummerow GEWEXMergedandIntegratedProduct
«GEWEX»AssessmentsClaudiaStubenrauch(CNRS) CloudsMarcSchröder(DWD) WaterVaporJeffreyReid(NRL) AerosolsHirohikoMasunaga Precipita@on
InvitedmembersGraemeStephens,SSGChairSoniaSeneviratne,SSGChairPetervanOevelen,IGPOWilliamRossow,Founder
GEWEXPROESClaudiaStubenrauch(CNRS)UTCCSueVanDenHeever(CSU)GAP
CORE Ac@vity Message 1:
• RecentlycompletedGDAPWaterVaporassessmentusedtodra`recommenda@oninthenewDecadalStrategy
• Updatedcloudassessmentwithimprovedrepresenta@onofac@vesensorobserva@onsisnearingcomple@on
• Aerosolassessmentisbeingresurrected• JointIPWG-GEWEXPrecipita@onAssessmentisnowunderway
• Specificaben@onto«highpriority»regimes(arid,orographic,high-la@tude)• EstablishedlinkstoGASS,GHP,GAP,etc.andmodelingcommuni@es• Representa@onfromNASAPMM,NOAA,JAXA,andEuropeancommuni@es• Seekingagencysupportforcomprehensiveac@vity
• GDAPpromotesanewcomprehensiveviewonassessment• Documentongoodprac@cestobefinalizedthisyear
Applica@on-centricapproachesarekeytomaximizevalueofassessments
CORE Ac@vity Message 2:
• E.g.BSRN• Cri@calreferenceforSRB• NewSI-traceablereferencefordownwellingLWirradiancebeingestablished• Recommendadding2mtemperaturetostandardBSRNobserva@onssuites• Workshoptodefineaccuracystandardsforbuoysites• BSRNchiefChuckLongissteppingdown• Replacementsearchunderway–goaltoannouncesuccessorinJuly(short@me)
• Newfeasibilitystudyforaregionallandsurfaceenergybalance/watercycleclosureassessmentcenteredonaDOEARMsite
Ground-basednetworksarevitaltouncertaintycharacteriza@on
Con@nuing a Key Climate Data Record: ISCCP-Next Genera@on • Cloudproper@escons@tuteacoregeophysicalclimaterecord• Instrumentsandexper@seexisttogenerateacalibrated,global,10-channel,mul@-parametercloudat3kmwith30minutecoverage
• Heritagetodealwithsuchdatavolumesalsoexists(e.g.AIRSandMODIS)• ExcellentopportunityforcoordinatedNASAandNOAAac@vitytomaximizescien@ficbenefitsofnewgeosta@onaryandlow-earthorbi@ngsatellites
• GDAPendorsestheforma@onofateamtodevelopaunifiedanalysisapproachbuiltaroundthecurrentgeosta@onaryradiancedatarecordaugmentedbyMODIS/VIIRSandsoundercloudinforma@on
• Agencysupportforaseriesofinterna@onalworkshops• Target2021forini@alimplementa@on
• Amul@-ins@tu@onal(mul@-na@onal)processingchainsimilartoISCCPisencouraged• Individualsatelliteoperators,collect,qualitycontrol,andsub-sampleradiancesandprovidethesedatatoananalysiscenterthatwouldconductarefinedcalibra@onandthequan@ta@vecloudanalysis.
• Dataproductstobearchivedanddistributedbyexis@ngdatacenters.
Related Ac@vi@es • GEWEXsponsoredorsupporteddatasetsonacommon1∘,3-hourly,equal-areagrid
• Supportsregionalwaterandenergybudgetclosureanalyses• UserworkshopinSpainin2019
• Advanceland-ETandsurfaceradia@onmeasurementsbyexplicitlylinkingtonew/proposedlandsurfacetemperature,soilmoisture,terrestrialwaterstorage,andgroundheatstorageassessmentac@vi@es
• GrewoutofCLIVARCONCEPT-HEATandNASANEWS• Integratedassessmentofmethodsforquan@fyingfundamentaldriverofclimateandreconcilingtop-of-atmospherevs.surfaceperspec@ves
GEWEXIntegratedDataset
Earth’sEnergyImbalance
IntegratedSurfaceWaterandEnergyAssessments
A New GDAP Vision Anintegratedapproachtoenergy-water-massconsistencybasedonrefineduncertaintycharacteriza@on
Sealevel
Gravimetry
Precipita@on
Radia@on
CloudSurfaceFlux
Consistencyasawayoflife
Loeb et al., 2012
Josey et al., 2015
Quan@fyingEarth’sEnergyImbalance…
turbulent
radi
ativ
e
Surface flux
Radiation at TOA
IPCC, 2013
Hindcast and Climate Projection
Storage Inventory (OHC)
Recent Advances from Satellite Gravimetry and Al@metry Measurements
• Sealevel(fromsatelliteal@metry)minusoceanmass(fromspacegravimetry)providesasatellite-basedalterna@vetoArgofores@ma@ngOHC
• [email protected]±0.5Wm-2
over2005-2015• GDAPendorsesexpansionofthisac@vitytoregionalandshorter@mescalesaspartofanewEEI-themedenergybudgetassessment.
Overall goal: Strengthen and extend the synergy community on the Earth’s energy imbalance aiming to discuss cross-links between the different WCRP core programs, in particular between CLIVAR and GEWEX, but also including CliC.
Expected outcomes: The workshop will identify research goals and opportunities on the Earth’s energy imbalance, and synthesize and focus the various aspects across WCRP. A main outcome may include the discussion and reporting on how the CONCEPT-HEAT activity could evolve into a WCRP topic.
Joint WCRP/CLIVAR/GEWEX: « Synergy community on the Earth energy imbalance »
Fall 2018, Toulouse, France