1 / 14

Level 2 Ocean Salinity PM #19

Level 2 Ocean Salinity PM #19. @ LOCEAN, Paris. 4-5 November 2010. ARGANS & L2OS ESL. L2OS status. L2OS 0317 delivery 22 November, QWG 1-2 December, FAT 6 December 0317 delta from 0316 Corrected calculation of relative wind direction (phiRelatWind)

xander-david
Télécharger la présentation

Level 2 Ocean Salinity PM #19

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Level 2 Ocean Salinity PM #19 @ LOCEAN, Paris 4-5 November 2010 ARGANS & L2OS ESL

  2. L2OS status • L2OS 0317 delivery 22 November, QWG 1-2 December, FAT 6 December • 0317 delta from 0316 • Corrected calculation of relative wind direction (phiRelatWind) • AUX_BULL_B (IERS Bulletin B) instead of MPL_ORBSCT (orbit selection bug fixed too) • New roughness models 2 & 3 • New quality index (Dg_quality_SSS) algorithm & flagging • Outstanding tasks before delivery • new roughness models: • Update ATBD & TGRD • Update unit tests • Cross-verify roughness model 3 with BEC results (Ifremer done) • review Product Performance Status Report • write Product Performance Evaluation Plan

  3. Relative wind direction Lower cross-track bias in retrieved SSS1 with corrected phiRelatWind Faster convergence (roughness model 1) 0317 0316

  4. Sun glint

  5. Dg_quality_SSS

  6. Quality flags

  7. Roughness model 2 0316 0317

  8. Roughness model 3 0316 0317

  9. Roughness model 2 verification Cross-verification with Ifremer breadboard (right)

  10. OTTs for new roughness models 2 & 3 OTT2F OTT3F

  11. TEC & Faraday rotation AUX_FARA Faraday rotation angle delta +-0.5 degree, -3+2 tecu (L1c TEC = AUX_FARA single predicted )

  12. Faraday rotation angle verification • Faraday rotation target-to-spacecraft is not the same (or opposite in sign) as Faraday rotation spacecraft-to-target using SO-TN-ESA-GS-5873 • Computation of faraday rotation target-to-spacecraft gives the rotation at the earth’s surface, not after the radiation is propagated to the spacecraft • Computation of Faraday rotation target-to-spacecraft with altitude = SMOS altitude (796 km) gives the same Faraday rotation as L1c (which is spacecraft-to-target) • L2OS attitude & angle calculations have been successfully cross-verified with those from L1c and independently using Matlab code from Montse • 0317 continues to use EECFI spacecraft-to-target (same as L1c & 0316)

  13. Faraday rotation angle verification • Test case 1: • SM_OPER_MIR_SCSF1C_20100802T153816_20100802T163215_344_001_1 • (ascending orbit), GP ID 5178770, measurement #1, snapshot ID 39365165 • L1c Faraday rotation angle 0.401 • AUX_FARA: • Single_P 0.40 Precise_P 0.41 • Single_R 0.53 Precise_R 0.48 • Single_C 0.49 Precise_C 0.46 • L2OS (all results agree with Matlab formulae from Montse) • spacecraft-to-target 0.4009 (0316 & 0317) • target-to-spacecraft (spherical earth): • 0.148 (at target, altitude 0 km) • 0.311 (at altitude 400 km) • 0.4009 (at SMOS altitude 796 km)

  14. Galactic Noise • Dg_sky (top), Fg_ctrl_gal_noise (bottom) • Tm_high_gal_noise = 4 (left), 2.8 (right) SM_TEST_MIR_OSUDP2_20100802T153816_20100802T163215_317_001_0, latitude 14-16

More Related