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RA-2/MWR ESLs Readiness Review. ESLs/IPF interface CLS status MSSL status ESLs input to Level 2 algorithms verification group Evolutions and updates mechanism. ESLs/IPF interface. June 2001: new end to end TDS produced by Level 1b/2 ESLs (ALS/CLS/MSSL):

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ra 2 mwr esls readiness review
RA-2/MWR ESLs Readiness Review
  • ESLs/IPF interface
  • CLS status
  • MSSL status
  • ESLs input to Level 2 algorithms verification group
  • Evolutions and updates mechanism
esls ipf interface
ESLs/IPF interface
  • June 2001: new end to end TDS produced by Level 1b/2 ESLs (ALS/CLS/MSSL):
    • the IPF is currently analysing this TDS: SPRs have been generated by the IPF on the Level 2 TDS and closed either:
      • with the output of the reference processors debugging process (IPF problem)
      • or with a modification on the Level 2 TDS (code) or documentation (DPMs/IODDs)
  • Upgrade of ESLs reference processors in progress:
    • new algorithms and auxiliary files under implementation in the ref. processors
esls ipf interface1
ESLs/IPF interface
  • corresponding upgrade of the IPF/F-PAC
  • verification of the modifications by using a new level 2 TDS to be produced by the ESLs
cls status
CLS status
  • Progress meeting held on 21st August at CLS:
    • upgrade of LOP code in progress:
      • MWR algorithms (wet tropo correction, water vapour and cloud liquid water contents, and atmospheric attenuation corrections)
      • ocean tide solution 1
      • geoid/mss interpolation routines
      • off-nadir angles
    • upgrade of LOP auxiliary files and models:
      • RA2_SOI_AX (MWR coeffs, rain table, mss/geo interpolation window sizes, ocean tide sol. 1 coeffs)
      • RA2_OT1_AX from GOT99 (0.5 deg)
      • RA2_OT2_AX/RA2_TLD_AX from FES99 (0.25 deg)
cls status1
CLS status
    • MWR_LSF_AX: better resolution (from 1/12 to 1/30 of deg)
    • RA2_MSS_AX from GSFC00 (from 1/16 to 1/30 of deg)
  • new Level 2 TDS to be produced with:
    • modifications from new algorithms/aux. files implemented
    • eventual modifications deriving from SPRs raised by the IPF on the current TDS
mssl status
MSSL status
  • New final slope models (Greenland and Antarctica) delivered:
    • tested by the IPF
  • new Level 2 TDS to be produced with:
      • modifications from new algorithms/aux. files implemented
      • eventual modifications deriving from IPF SPRs
level 2 algorithms verification activities
Level 2 algorithms verification activities
  • Classification of algorithms:
    • algorithms also used in other missions (i.e. model iono correction, steady heights, ocean tides)
      • only precision and impact on the output parameters will be verified
    • new algorithms (e.g. ocean/ice2 retrackings, wind speed, dual freq iono correction)
      • extensive verification needed
  • Quantity of data used
    • small sets of data (1 or 2 orbits) to examine most of the output parameters
    • larger sets of data (between 7 days and 1 cycle) to perform statistical analysis, fine tuning, precision, …
level 2 algorithms verification activities1
Level 2 algorithms verification activities
  • Type of data used:
    • FDGDR/FDMAR (IPF) and IGDR/IMAR, GDR and SGDR (F-PAC)
  • Products validation
    • Verification of the MPH and SPH (e.g. consistency of the information in the headers and in the records)
    • verification of MDS parameters not verified in the first stages
    • in parallel validation tasks for R. Scharroo and D. Cotton
  • Detailed analysis of each algorithm verification strategy to be done at the next L2 algos verif. group meeting (13/09/01)
evolutions and updates mechanisms
Evolutions and updates mechanisms
  • Necessity of upgrade aux. files and algos near the end of CP may arise, following the work done by cal/val teams.
  • Requirement to upgrade aux. files/algos to be triggered by sub-group leaders (RA2 L1b, RA2 L2 and MWR):
    • ESLs to write SPR on applicable DPM, to validate it on a prototype processor (copy of the ref. processor) and to produce TDS (to test evolution on IPF/F-PAC) that will be delivered to the CCVT coordinator.
    • If deliverables acceptable, they’ll be passed to ESA/Alcatel interface for IPF and to ESA interface for F-PAC, for implementation
  • Time scale very short, since this evolution has to be done before the end of CP
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