Ra 2 mwr esls readiness review
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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

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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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