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ENVISAT CCVT Meeting ESRIN March 2003 RA2 L2 Ice Processing

ENVISAT CCVT Meeting ESRIN March 2003 RA2 L2 Ice Processing. Algorithms & Products Validation & Tuning S.Baker, A.Muir MSSL/UCL. Verification - progress.

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ENVISAT CCVT Meeting ESRIN March 2003 RA2 L2 Ice Processing

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  1. ENVISAT CCVT MeetingESRIN March 2003RA2 L2 Ice Processing Algorithms & Products Validation& Tuning S.Baker, A.Muir MSSL/UCL ENVISAT RA2-MWR CCVT Meeting 1

  2. Verification - progress Analysis is on-going -Configuring software tools to deal with 'features' of the real data. -Aiming to do bulk processing to obtain some significant statistical results. DORIS Iono correction still has holes - working to integrate Remko's GIM correction into our processing set-up. (Thanks!) Flags - MCD flags is still not set properly (as reported in Dec 02). This is a definite error in all products. Doppler correction - Seeing default values in places where Orbit (lat,lon,alt)is valid - don't understand why Doppler is not computed everywhere. Looked at some retracker flag examples over Greenland after Anita's email. 20Hz retracker flags are not all set to bad. Ice2 is flagging very many more bad waveforms than Ice1though. But this need not be an error. (Working on some statistics for this.) ENVISAT RA2-MWR CCVT Meeting 2

  3. MCD Flags • I/S/GDR MCD Flag still incorrect • No retracker flags set at all in MCD ENVISAT RA2-MWR CCVT Meeting 3

  4. -+ ++ -- +- Updated LIP items confirmed We have verified the LIP items updated since the last CCVT meeting in Dec. • In FDGDR 1Hz data now referenced to block 9.5 rather than 10. • Sign convention in Slope model application - new model files issued ENVISAT RA2-MWR CCVT Meeting 4

  5. Slope Correction Before • New slope files confirmed in Offline L2 chains Now correct ENVISAT RA2-MWR CCVT Meeting 5

  6. L2 Slope Correction Now correct • Echo magnitude and direction verified over Antarctica Before ENVISAT RA2-MWR CCVT Meeting 6

  7. L2 Slope Correction Before • Echo magnitude and direction verified over Greenland Now correct ENVISAT RA2-MWR CCVT Meeting 7

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