***************************************************************************= *** dorisreport 18-Jun-2019 16:22:17 Message No 4776 ***************************************************************************= *** Author: "Lemoine, Frank G. (GSFC-61A0)" Subject: Delivery of GSCWD31 SINEX files for First quater 2019 SUMMARY OF GSC DORIS SUBMISSION for Jan 6, 2098 to Mar 31, 2019 wd31 SINEX files Date of Report: June 12, 2019 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D Special Note: We are aware that this delivery of SINEX files does not include the followi= ng stations new to DORIS mostly in 2018: MLAC (Guam, 4/12/2018), RISC (Rio Grande, 08/28/2018), ROXC (Rothera, 02/27/2018), SARC (Sal, 11/15/2017) SJUC (San Juan, 10/02/2018) SVAC (Ny Alesund II, 10/19/2018). We will reprocess and resubmit these data once we have updated the a priori station coordinate set and imported a new DPOD solution. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D The relationship to our previous series (ITRF2014, Lemoine et al., 2016) is as follows: gscwd26: series submitted for ITRF2014 (Lemoine et al., 2016, Adv. Space Re= s.) gscwd27: gscwd26 + SARAL gscwd28: gscwd27 + changes to solar-array orientation modeling described below. gscwd29: gscwd28 replacing DPOD2008_cls_1.15 with DPOD2014_v04. gscwd30: gscwd29 + Jason-3 gscwd31: gscwd29 + Jason-3 with local adjustment for SAA stations on the Jason-3 normal equations. wd31 series ( Jason-2, Cryosat 2, Hy2a, Saral, Jason-3) NAME DATE No. of No. of Stations Coord parms Used Edited gsc19006wd31.snx 190106 129 43 4 gsc19013wd31.snx 190113 126 42 4 gsc19020wd31.snx 190120 126 42 4 gsc19027wd31.snx 190127 126 42 4 gsc19034wd31.snx 190203 123 41 5 gsc19041wd31.snx 190210 126 42 5 gsc19048wd31.snx 190217 126 42 4 gsc19055wd31.snx 190224 126 42 4 gsc19062wd31.snx 190303 126 42 4 gsc19069wd31.snx 190310 126 42 5 gsc19076wd31.snx 190317 126 42 4 gsc19083wd31.snx 190324 123 41 5 gsc19090wd31.snx 190331 123 41 5 2. POD summary of arcs used Satellite Orbit Modelling: 7 calendar arcs beginning on Sundays at 00:00:00 weekly gravity field (to 5x5 no c50) using c21 & s21 from IERS standards goco02s gravity field (6x6 to 180x180, plus c50) SLRF2014/DPOD2014v04 station coordinates GOT4p10c ocean tide model (20x20), for dynamical ocean tides GOT4p10c for ocean loading Ocean pole tide (60x60) MSIS atmospheric density model ECMWF-6hr atmospheric gravity (to 50x50) 10 deg elevation cutoff angle Troposphere Modelling and Refraction Corrections: ->GMF (Global Mapping Function): Boehm et al. (GRL, 2006, doi:10.1029/2005= GL025546) ->Saastamoinen Troposphere Model. ->Global Pressure Temperature (GPT) for met. data: Boehm et al. (J. Geodesy, 2007, doi:10.1007/s00190-007-0135-3) External attitude (quaternion) data used for Jason-2 & Jason-3 NB. Quaternions are applied to model both the s/c body and solar array orientations. S/C quaternions also are used in order to apply the tracking point (DORIS,SLR) corrections) UCL model for Envisat radiation pressure modelling Solve combined normal equations for: 6 state parameters Drag (cd/2-hr, Envisat, Cryosat2); (cd/8-hr, Jason-2) Drags for ENV, CS2 using time correlation of 2hrs. Once per revolution radial and cross track accelerations Troposphere & Range-rate biases (pass-by-pass) X and Y EOP with 1 meter constraint X, Y, Z station positions with 1 meter constraint Jason-2 START STOP NoDOR DORRMS(mm/sec) 190106 0.00 190113 0000 88631 0.40980 190113 0.00 190120 0000 108828 0.41820 190120 0.00 190127 0000 107482 0.41740 190127 0.00 190203 0000 105688 0.41840 190203 0.00 190210 0000 107145 0.42280 190210 0.00 190215 0400 77273 0.41480 Cryosat-2 START STOP NoDOR DORRMS(mm/sec) 190106 0000 190113 0000 60142 0.44460 190113 0000 190120 0000 57252 0.43200 190120 0000 190127 0000 56479 0.44820 190127 0000 190203 0000 55699 0.44700 190203 0000 190210 0000 56896 0.44420 190210 0000 190214 0800 34080 0.43720 190214 1000 190217 0000 19201 0.45680 190217 0000 190224 0000 57908 0.45320 190224 0000 190303 0000 56684 0.44780 190303 0000 190310 0000 58166 0.44200 190310 0000 190317 0000 58094 0.44280 190317 0000 190324 0000 56831 0.44600 190324 0000 190331 0000 57142 0.44780 190331 0000 190403 1000 27420 0.45040 190403 1200 190407 0000 28372 0.45120 Hy2a START STOP NoDOR DORRMS(mm/sec) 190106 0000 190113 0000 75031 0.41260 190113 0000 190120 0000 73604 0.41100 190120 0000 190127 0000 69772 0.41640 190127 0000 190130 0800 32529 0.41620 190130 1000 190203 0000 35903 0.41880 190203 0000 190210 0000 70573 0.41600 190210 0000 190212 0800 21072 0.42740 190212 1000 190214 0000 16659 0.42040 190214 0200 190217 0000 30310 0.42600 190217 0000 190224 0000 71898 0.42500 190224 0000 190303 0000 71063 0.42140 190303 0000 190310 0000 71712 0.42400 190310 0000 190317 0000 62176 0.41780 190317 0000 190324 0000 71862 0.41780 190324 0000 190331 0000 68850 0.42300 190331 0000 190407 0000 65722 0.42440 Saral START STOP NoDOR DORRMS(mm/sec) 190106 0000 190113 0000 66939 0.41880 190113 0000 190120 0000 66202 0.41420 190120 0000 190127 0000 62319 0.47320 190127 0000 190203 0000 60997 0.41820 190203 0000 190210 0000 63103 0.43860 190210 0000 190217 0000 62900 0.42960 190217 0000 190224 0000 64261 0.42560 190224 0000 190303 0000 62660 0.46520 190303 0000 190310 0000 63997 0.42400 190310 0000 190317 0000 63056 0.4130 190317 0000 190324 0000 64845 0.42240 190324 0000 190331 0000 62881 0.42340 190402 0000 190407 0000 44756 0.42700 Jason-3 START STOP NoDOR DORRMS(mm/sec) 190106 0000 190113 0000 108463 0.43500 190113 0000 190120 0000 107023 0.43500 190120 0000 190127 0000 104025 0.44460 190127 0000 190203 0000 102339 0.45240 190203 0000 190210 0000 103421 0.44920 190210 0000 190217 0000 102064 0.45360 190217 0000 190224 0000 102813 0.44180 190305 1600 190308 0000 11721 0.43700 190310 0000 190317 0000 88015 0.43160 190317 0000 190324 0000 103718 0.43880 190324 0000 190331 0000 99911 0.45060 190331 0000 190406 1600 94181 0.45740 RMS of orbit differences: Doris only arc vs SLR/Doris arc (cm) These differences are from wd25 and are included for information purposes only as there are no wd31 SLR/Doris arcs. radial cross along j2190107 0.33123 4.12346 1.46907 j2190113 0.65872 4.11433 2.11011 j2190120 0.64260 3.68908 1.87658 j2190127 0.25885 2.88403 1.20378 j2190203 0.60289 5.39847 3.18561 j2190210 0.52938 1.68484 1.56385 c2190106 0.28943 4.62353 2.88128 c2190113 0.40612 2.97829 4.13714 c2190120 0.19961 1.63590 2.19396 c2190127 0.21089 1.59612 1.20721 c2190203 0.24904 2.12440 2.48495 c2190210 0.22294 2.07456 2.99882 c2190214 0.37920 2.56002 3.77461 c2190217 0.43055 1.98014 3.11268 c2190224 0.21568 1.41142 2.45583 c2190303 0.24434 3.28902 4.41886 c2190310 0.26642 3.29983 2.87038 c2190317 0.31674 1.65944 3.27973 c2190324 0.22884 1.76453 2.03531 c2190331 0.38118 1.66765 3.30017 c2190403 0.30118 7.38621 3.36107 hy190106 0.25102 2.31148 1.12129 hy190113 0.17721 2.47266 0.96051 hy190120 0.24738 2.69856 0.74974 hy190127 0.18438 2.65213 1.18448 hy190130 0.36722 5.48057 1.98873 hy190203 0.28316 2.70609 0.83815 hy190210 0.16375 2.85036 1.18906 hy190212 0.18883 1.87918 1.02586 hy190214 0.11184 1.96504 1.07967 hy190217 0.13384 2.21400 1.47728 hy190224 0.16190 2.42235 0.81424 hy190303 0.21912 2.56787 0.85549 hy190310 0.18488 2.49942 1.38160 hy190317 0.17851 2.04743 1.07046 hy190324 0.30673 2.84136 1.28077 hy190331 0.17126 2.47578 0.83772 sa190106 0.17835 2.46717 0.62073 sa190113 0.17886 2.24979 0.68109 sa190120 0.35662 5.07339 1.36720 sa190127 0.16248 2.53089 0.88208 sa190203 0.28478 1.88155 1.88100 sa190210 0.35678 1.33774 1.74309 sa190217 0.28327 2.28732 1.09678 sa190224 0.49242 8.90459 3.73496 sa190303 0.21573 3.58975 0.87455 sa190310 0.25497 2.63679 1.60933 sa190317 0.17488 1.91023 0.92569 sa190324 0.25291 1.92671 1.37176 sa190402 0.17090 2.23531 0.97572 j3190106 0.61382 4.72017 2.31505 j3190113 0.49126 4.26918 1.56311 j3190120 0.55349 4.13382 2.82497 j3190127 0.41703 3.57680 2.50085 j3190203 0.68068 2.16425 3.03415 j3190210 0.53771 2.26919 2.18492 j3190217 0.58337 3.25368 2.36595 j3190305 0.80153 6.09656 6.49501 j3190310 0.74895 3.27227 3.11394 j3190317 0.60792 2.69017 2.10671 j3190324 0.39267 3.04700 2.13494 j3190331 0.39795 3.11525 2.08447 3. Contact information for questions Frank Lemoine, GSFC/NASA Greenbelt, MD USA frank.g.lemoine@nasa.gov Douglas Chinn, SGT Inc., Greenbelt MD USA douglas.s.chinn@nasa.gov References: Lemoine, F.G., D.S. Chinn, N.P. Zelensky, J.W. Beall, K. Le Bail (2016), "The development of the GSFC DORIS Contribution to ITRF2014," Adv. Space Res., 58(12), 2520-2504, doi:10.1016/j.asr.2015.12.043 Zelensky N.P., F.G. Lemoine, D.S. Chinn, et al., (2016), "Towards the 1-cm SARAL orbit", Adv. Space Res, 58(12), 2651-2676, doi:10.1016/j.asr.2015.12.011 4. Internal comparison: Inversion of weekly combined normal equation and comparison with reference (ITRF2008). Stations used in comparisons (when available) ADEA ADEB ADFB ADGB AJAB AMSA AMTB AMUB AMVB AREA AREB ARFB ARLA ARMA ASDB ASEB BADA BADB BELB BEMB BETB CACB CADB CHAB CIBB CICB CIDB COBB COLA CROB CRPB CRQB DAKA DIOA DIOB DJIA DJIB EASA EASB EVEB FAIA FAIB FLOA FUTB GALA GAVB GOLA GOMA GOMB GR3B GREB GRFB GUAB HBKA HBKB HBLA HBMB HELA HELB HEMB HUAA HVOA IQUB JIUB KERA KERB KESB KETB KITA KITB KIUB KOKA KOLB KRAB KRBB KRUB KRWB LIBA LIBB LICB LIFB MAHB MALB MANA MANB MARA MARB MATB META MEUB MIAB MONB MOOB MORA MORB MSOB MSPB NOUA NOUB NOWB NOXB ORRA ORRB OTTA OTTB PAPB PAQB PASB PATB PAUB PDLB PDMB PURA RAQB REUA REUB REYA REYB RIDA RIKB RILB RIMB RIOA RIOB RIPB RIQB RIRB ROTA ROTB ROUB ROVB SAKA SAKB SALB SAMB SANA SANB SAOB SRCB SODA SODB SPIA SPIB STJB SYOB SYPB TANB THUB TLHA TLSA TLSB TRIA TRIB WALA YARA YARB YASB YELA YELB YEMB Stations added to the above list RJB LAOB STKB GR4B SOEB SYQB MAUB PDNC OWEC ROWC ROWC ADHC KEUC GONC The additional stations from DPOD2008v15_cls with respect to our prior processing using DPOD2008V15 are: JIWC PDOC SAPC KEVC MNAC Additional stations added into the solution with DPOD2014_v04 are WEUC KIVC WRMS, TX, TY, TZ, Scale in mm (with respect to the above reference station = set) (Note: Stations with less than 300 points are never used. Other stations are edited if they cause a high adjustment.) Jason-2, Cryosat-2, Hy2a, Saral, Jason-3 wd31 solution Year Mon Day DOY No.of STA WRMS TX TY TZ S= cale 2019 01 06 006 43 9.78 -4.21 -10.11 -3.05 = 3.48 2019 01 13 013 42 9.06 -2.70 -4.14 6.82 = 2.37 2019 01 20 020 42 10.45 -4.96 -10.85 24.66 = 3.26 2019 01 27 027 42 9.36 -6.22 -7.00 6.18 = 4.28 2019 02 03 034 41 9.21 -7.03 -11.65 8.84 = 1.22 2019 02 10 041 42 11.55 -3.62 -12.99 -3.67 -= 1.08 2019 02 17 048 42 10.93 -11.79 -7.41 -6.13 = 3.98 2019 02 24 055 42 13.82 -4.04 -9.17 -6.87 = 0.94 2019 03 03 062 42 10.98 -4.15 -4.72 -13.11 = 6.47 2019 03 10 069 42 11.10 -3.34 -4.61 1.14 = 3.26 2019 03 17 076 42 10.93 -1.81 -5.13 -4.28 = 3.60 2019 03 24 083 41 11.62 -4.35 -6.03 -6.54 = 5.81 2019 03 31 090 41 11.56 -6.26 -0.93 -0.01 = 1.73 FUUB JIVB MAIB MOSB New stations which started tracking on or after Sep 2015.= Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr