Minutesofthe2017EGUILRSASCMeetingSaturday, April 22, TU Wien, 9:00 – 17:00
OPERATIONALPRODUCTS:STATUSREPORTSandFUTUREPLANS
ASI:ACperformancespresentedfortheroutineproducts:coordinates,EOPandorbits.ThereisanunexpectedimprovementoftheACagreementstartingfromthebeginningofMarch.TheLODresidualsforGFZandNSGFarestillhigh,theNSGFLODisexcludedfromthecombinationsinceSeptember2016.Theweeklyv70solutionswithITRF2014asapriorireferenceframearedeliveredby5ACs:BKG,GRGSandNSGFareexpectedtocontributewithinJune2017.Thecombinationv70isroutinelydoneevenifitisnotsubmittedtothedatacenters.TheACtimeseriesshowagoodagreement.Withregardstotherequestedsubmissionforthesystematicerrorpilotproject,onlyASI,DGFIandJCEThavesubmittedthetimeseriesusingthenewASCconventionstoproperlydiscriminatebetweenmultiplewavelengthswhenreportingthedatawavelengthintheSINEXfile.ThedatumcomparisonamongITRF2014,DTRF2014andJTRF2014wasshown;noscaledifferencebetweenSLRandDTRF2014andJTRF2014.JTRF2014realizestheSLRgeocenterwithintheformalerroroftheestimatedoffsets.
BKG:activitiesresumedattheendof2016,epochissueonSP3fixed.BKGactivitiesfocusedontheEGSIEMproject(30-dsolutionfor2006-2007low-degreeGFCestimated)requiringsignificantadaptationtoavailableprocedures.ThechainforITRF2014isreadytobeused,submissionexpectedbytheendofMay(AI).ThesubmissionoftheBIASPPwillbedonebytheendofMaytoo(AI),thetimeseriesisundercheck.
DGFI:alltherequestedtimeserieshavebeendelivered.Etalonorbitstobechecked.Kunmingissue,thesystemwasmovedby30mandthedataweredeliveredwiththeoldsitenumber.ThecorrectedidwasrecordedinthedatastartingfromJanuary2017.Theerroneouslyreleasedearlydatainlate2016havebeenmarkedtobedeletedintheDataHandlingfile.
ESA:noneattending.TimSpringersentane-mailtojustifytheabsence(NB:Needtosendhimthequestionsweneedanswerstoforourplanning!)
GFZ:weeklysolutionv70isrunning,timevariablegravitynotimplemented(asinthereanalysisfortheITRF2014developmentseries)(AI).PPtimeseriesisinthequeue(v201)(AI).ITRF2014testsareongoing,PODin2014showsanimprovedorbitalfitaround1mmw.r.t.SLRF2008.
GRGS:readytoswitchtoITRF2014,implementedinGINS.Thewholeprocessingsystemcrashedandnobackupwasavailable(AGAIN!).Hopefullythebadtimesarebehindandacoupleofthingstobecheckedbeforesubmittingtheoperationalproducts,afewdaysneeded.ParallelchainsinParisandToulousewiththehelpofD.Coulot.ConcerningthesystematicerrorPP,everythingshouldbemadeagainfromthebeginning,itwillbedoneaftertheoperationalproductsstartbeingdeliveredroutinelyagain.
NSGF:NewCoMtablesforLAGEOS,Etalon,LARES,Ajisai,Starlette,Stella(SosnicapointedoutthatStarletteandStellavaluesmustbecheckedforafewstations,astherearemistakes,probablytypos,inthenewtables)(AI).SWimplementationofthegravityfieldestimationdone.ImplementedalsoDTRF2014forthereferenceframecomparisonasrequestedbyIERSfortheTechnicalNote.StillchasingtheLODproblem,workinprogress.SwitchtoITRF2014foreseensoon,tryingtosubmitbytheendofMay(AI).RBPPwithnewconventionsnotdoneyet(AI).SomeanalysisdoneonthePPtimeseries,ESAseemstobedifferentfromtheotherACs,asitwasalreadynotedbyotherACsinpastmeeting.The~1ppbdifferencebetweenthestandardandthePPsolutionconfirmed.
JCET:Overviewoftheoperationalproducts,theparallelsolutionwithITRF2014asapriori,PPbiasresult.TheIERSEOPisalignedwithITRF2014sinceFebruary9,2017.Themeanpoleisnotavailableyet,adiscussionisongoingontheeffecttobemodeledbythemeanpole(e.gpost-glacialreboundonly…).Fornow,thesolutionistousethetabularvalues.TheofficialIERSroutinefor2017(i.e.IERS_CPM_16.f)isnotavailable,thetabularvaluesonlinechangefromoneversionoftheseriestothenext.JCETmadearoutinethatcanbeusedinsteadofthetabulardata,ILRS_CPM_15.f,basedontheIERSroutine(2015version)andextendedto2021.TheJCETroutinewasdistributedtoASCbyemail.SLRF2014hasbeenreleasedpriortotheASCmeeting.SincetheASCmeeting,thefilewasupdatedtwice,tocorrectsomeformattingerrors.ItisavailablefromtheILRSwebpages:
https://ilrs.cddis.eosdis.nasa.gov/science/dataAnalysisResources/index.html;and
https://ilrs.cddis.eosdis.nasa.gov/network/site_information/index.html
Thelong-wavelengthgravitytimeserieshasbeenextendedtotheendoftheyear(2017)andisavailableonlinefordownloading:http://geodesy.jcet.umbc.edu/ILRS_ASC_2017_ITRF2014_IMPLEMENTATION
Eccentricitydatabaseclean-up:thelatestreleaseonFebruary2017containsthebestsurveyresultstodateandisavailableonlineattheusualILRSwebpageandCDDIS:
ftp://ftp.cddis.eosdis.nasa.gov/slr/slrocc/ecc_une.snx
ftp://ftp.cddis.eosdis.nasa.gov/slr/slrocc/ecc_xyz.snx
QCactivitiesandraw/smoothedpost-fitRMSseriesshownformostactivestations.LaPlataisabouttocomeonline.QCreportscontentfromalloftheroutinelycontributingACs(aswellasthehistoricalCSRreportsuptoearly2000),areavailableonlineatJCET’sQCpage:
http://geodesy.jcet.umbc.edu/QC/
andtheuseofthewebsitehasbeendemonstratedduringtheASCmeetingviareal-timeconnection.Thestationeventsarelinkedandtheplotscanbesuperimposedtocorrelatejumpsinthetimeseries.Anotherwebsitegivesorbitcomparisons:http://geodesy.jcet.umbc.edu/SP3/
IGG:newassociateanalysiscenter.MaingoalisprocessingSLRdataofthenewGNSSsystems:GLONASS,Galileo,BeiDou,IRNSS,QZS,andGPSIII(inthefuture).Activities:MGEXproject,orbitvalidationwithcomparisonofSLRandGNSSorbitswithdailyreporttobedistributeduponrequest.Onlineservice(multi-slrgnss.rhcloud.com)tochecktheSLRdataonGNSS:table,statistics,residuals,etc.Thestationsarekeptfixedatthereferenceframe,theimprovementonthecoordinatesforthosestationsgettingalownumberofLAGEOSdataandhighnumberofGNSSdata(mostlytheRussians)couldbeconsideredinthefuture.The
websiteisshownwithareal-timeconnection.Spacecraftmodelingisquitecritical.Futureactivities:GNSSorbitswithSLRdata,combinedLAGEOS+GNSSproducts.
CODE:DachisaskingthecommunityifitcouldbeinterestingtoextendtheCODEdailyreporttoallGNSSsatellites;thedailyreportcouldbedelayedby3days,inordertoincludetheMGEXresults.Thesuggestionisaccepted,Dachwillcheckthefeasibility(AI).Whenavailable,themodifiedreportwillbeuploadedintheJCETdatabasecurrentlyavailableonlinewithGPSandGLONASSorbitsonly.
OSTM/JASON-2:T2L2betweenSLRstationstodeterminethetimebiasbetweenthestations.TheimpactofTBisnotnegligibleandcanreachsomemillimeters,asinthecaseof8834wherethereare6mmdifferenceintheeastcomponent.Thecablecalibrationofthetimingsystemisacriticalpoint.Thereare2apparatus(aFrenchandaGermanpieceofequipment)availabletocalibrateontheground,andtestthestationsynchronization,at100nslevel;the2apparatusgivethesameresultswithwhatT2L2delivered.TheQCanalysisisabletoestimatetheTBbuttheerrorislarge,thedirectobservationwithJASON-2ismuchmoreaccurate.The URL for T2L2 results, makes it possible for any SLR station ranging to Jason-2/T2L2, to monitor its time bias: http://www.geoazur.fr/t2l2/en/data/v4/
AreportfromtheT2L2teamispossible;inordertogiveafeedbacktothestations,adailyreportisfeasible.GRGS/OCAwilldelivertotheASCatableofthemeasuredtimebiasestobecomparedwiththeQCanalysisresults(AI).ThetopicwillbeforwardedtotheNetworkandEngineeringSC,inordertodecidehowtoplanthecalibrationatthestations(AIoftheQCB?).
SystematicerrorPilotProject:theACs(exceptASI,DGFIandJCET)arerequestedtosendthetimeserieswithseparatebiasestimationv20x(period2005-2008)withthenewconventionsbytheendofJune(AI).
ITRF2014implementation:theswitchwillbedoneonJune15thforbothdailyandweekly(v70andv170).Timevariablegravityandmeanpolemustbeused.There-analysisofthefulldatasetandthecombinationmustbereadybeforethemeetinginRiga.ThedeadlinefortheACsistheendofAugust,onemonthneededforthecombination(AIforallACsandCCs)
NextUAWinParis:Pavlis,Luceri,Ries,Thaller,Koenig.Contributiontobecoordinatedinthenextdays.
Rigaworkshop:theanalysissession“Howdoweevaluateourcurrentperformance?”Mueller,Koenig,Rodriguez,Thaller,PavlisandLuceriwillcontributetothesession.
JoGILRSSpecialissue:Ontheorderof50abstractscollectedsofar,aresidualclean-upinthenextweeks.Afterthat,nextstepistotalkwiththeeditorinchieftogetthemapproved.TheoriginalsubmissiondatewasendofMay,itwillbesurelyshifted.
SUMMARYofACTIONITEMS:
AINo. ResponsibleEntity ActionItemDescription
1 BKG SubmitITRF2014productsbyendofMay(atthelatest)
2 BKG SubmitSyst.ErrorPPSINEXsbyendofMay(atthelatest)
3 GFZ Implementfullreanalysismodel(alaITRF2014development)ASAP
4 GFZ Deliverv201SINEXfilesfortheSyst.ErrorPPASAP
5 NSGF CorrecttyposinCoMtablesandre-releasewithemailtoASCASAP
6 NSGF SubmitITRF2014productsbyendofMay(atthelatest)
7 NSGF Deliverv201SINEXfilesfortheSyst.ErrorPPASAP
8 CODE CheckthefeasibilitytoextenddailyreporttoallGNSSsatellites
9 OSTM/JASON-2 DelivertotheASCatableofthemeasuredtimebiasesintheGLTN
10 ALLACs&CCs TRFswitchonJune15thforbothdailyandweeklyseries(v70andv170)
11 ALLACs ReanalysisoffulldatasetwithSLRF2014readybyendofAugust‘17
12 ALLCCs CombinationofallinputseriesmustbereadybyendofSeptember‘17
13 Pavlis,Luceri,Ries,Thaller,Koenig PlanviaemailtheUAWpreparatoryworkandpresentations
14Mueller,Koenig,Rodriguez,Thaller,PavlisandLuceri
Preparatoryworkforthepositionpaper(s)neededfortheRigaWorkshop
ASC List of attendees, EGU 2017 Meeting, TU Wien, Austria
Saturday, April 22, 9:00 – 17:00 CHECK✔ Last name First name Institution e-mail
✔ Altamimi Zuheir Institut Geographique National, ENSG/LAREG, France [email protected]
✔ Appleby Graham NERC SGF, UK [email protected]
Arnold David SAO, USA [email protected]
✔ Belli Alexandre OCA-CNRS, FR [email protected]
Biancale Richard CNES, FR [email protected]
✔ Bianco Giuseppe Agenzia Spaziale Italiana [email protected]
Bloßfeld Mathis Deutsches Geodätisches Forschungsinstitut, Germany [email protected]
✔ Boisits Janina TUW, Austria [email protected]
Bondarenko Yuri IAA RAS, RF [email protected]
Botha Roelf HartRAO, South Africa [email protected]
Bruni Sara Univ. of Bologna, IT [email protected]
Choliy Vasyl Kiev University, Ukraine [email protected]
Clarke Bart NASA/Honeywell Technology Solutions, USA [email protected]
Combrick Ludwig HartRAO, South Africa [email protected]
✔ Dach Rolf AIUB, University of Bern, Switzerland [email protected]
✔ Deleflie Florent GRGS/ IMCCE / Paris Observatory, FR [email protected]
Dell’Agnello Simone INFN/LNF, Italy [email protected]
Donovan Howard NASA/Honeywell Technology Solutions, USA [email protected]
Dunn Peter Sigma Space, USA [email protected]
Evans Keith Joint Center for Earth Systems Technology, Univ. of Maryland, Baltimore County, USA
✔ Exertier Pierre OCA-CNRS, France [email protected]
Fausk Ingrid Kartverket, NO [email protected]
Flohrer Claudia ESOC/ESA [email protected]
Francou Gerard Observatoire de Paris, FR [email protected]
Gayazov Iskander IAA RAS, RF [email protected]
Glotov Vladimir IAC PNT, RF [email protected]
Govind Ramesh Univ. of Cape Town, SA [email protected]
✔ Grashl Andrea AIUB, University of Bern, Switzerland [email protected]
Griffiths Jake NRL, USA [email protected]
Grunwaldt Ludwig GFZ, Germany [email protected]
Hoffman Evan NASA, USA [email protected]
Horvath Julie NASA/Honeywell Technology Solutions, USA [email protected]
Ignatenko Igor VNIIFTRI, RF [email protected]
Kehm Alexander Deutsches Geodätisches Forschungsinstitut, Germany [email protected]
Kim Young-Rok KASI, Korea [email protected]
Kirchner Georg OEAW, Austria [email protected]
✔ König Daniel Bundesamt für Kartografie und Geodäsie, Germany [email protected]
✔ König Rolf GFZ, Germany [email protected]
Koidl Franz OEAW, Austria [email protected]
Kopeikin Sergei Uni. of Missouri, USA [email protected]
Kucharski Daniel SERC, Australia [email protected]
Kuzmicz-Cieslak Magdalena
Joint Center for Earth Systems Technology, Univ. of Maryland, Baltimore County, USA
Kuznetsova Iva VNIIFTRI, RF [email protected]
Lamb Doug Harris Corp., USA [email protected]
Lejba Pawel PAN, Poland [email protected]
Lemoine Frank NASA/Goddard [email protected]
Lucchesi David IAP/INAF & INFN, Italy [email protected]
✔ Luceri Cinzia e-GEOS, Italy [email protected]
Ma Chopo NASA/Goddard, USA [email protected]
Malkin Zinovy Pulkovo Observatory, RF [email protected]
Mareyen Maria Bundesamt für Kartografie und Geodäsie, Germany [email protected]
Martini Manuele LNF – INFN, Italy [email protected]
McCormick David NASA/GSFC, USA [email protected]
Michael Benjamin (Pat) NASA/GSFC, USA [email protected]
✔ Müller Horst Deutsches Geodätisches Forschungsinstitut, Germany [email protected]
Müller Jürgen Leibniz Universitat Hannover, Germany [email protected]
Noll Carey NASA/Goddard, USA [email protected]
Otsubo Toshimichi Hitotsubashi Univ., Japan [email protected]
Park Eunseo KASI, Korea [email protected]
Parkhomenko Natalia OJC"RPC"PSI", RF [email protected]
Pasynkov Vladimir OJC"RPC"PSI", RF [email protected]
✔ Pavlis Erricos Joint Center for Earth Systems Technology, Univ. of Maryland, Baltimore County, USA
✔ Pearlman Mike CfA, SAO, USA [email protected]
✔ Pirri Mauro e-GEOS, Italy [email protected]
✔ Pucacco Giuseppe Uni. Tor Vergata & INFN, Italy [email protected]
Reinquin Franck CNES, France [email protected]
Ricklefs Randall The University of Texas at Austin, USA [email protected]
Ries John The University of Texas at Austin, USA [email protected]
✔ Rodriguez Jose NERC SGF, UK [email protected]
Roggenbuck Ole Bundesamt für Kartografie und Geodäsie, Germany [email protected]
Schönnemann Erik ESOC/ESA Erik. [email protected]
Schwatke Christian Deutsches Geodätisches ForschungsInstitut, Germany [email protected]
Searle Antony GSD/NRCan [email protected]
✔ Shao Fan Shanghai, SHAO [email protected]
Smith Reed NRL, USA [email protected]
✔ Sośnica Krzysztof WUELS, Poland [email protected]
Springer Tim ESOC/ESA [email protected]
Stevenson Kate Harris Corp., USA [email protected]
Svehla Drazen ETH, Switzerland [email protected]
Tcyba Efim FSUE VNIIFTRI, RF [email protected]
✔ Thaller Daniela Bundesamt für Kartografie
und Geodäsie, Germany [email protected]
Torrence Mark SGT/NASA Goddard, USA [email protected]
Varghese Thomas Cybioms, USA [email protected]
Vei Margarita GFZ, Germany [email protected]
Visco Massimo IAP/INAF & INFN, Italy [email protected]
Wang Xiaoni OCA/CERGA, FR [email protected]
Wang Xiaoya Shanghai, CAS [email protected]
Wetzel Scott NASA/Honeywell Technology Solutions, USA [email protected]
Wilkinson Matt NERC SGF, UK [email protected]
✔ Yatskiv Yaroslav Ukrainian Acad. of Sci., Ukraine [email protected]
Zandbergen Rene ESOC/ESA [email protected]
Zhang Zhongping Shanghai, CAS [email protected]
Zinoviev Alexander IAC PNT, RF [email protected]
