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PART 2: A QUICK COMPARISON OF V504 AND V620 GLOBAL MAPS Joe Tenerelli SMOS Calibration Meeting 18 26/05/2014.

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Presentation on theme: "PART 2: A QUICK COMPARISON OF V504 AND V620 GLOBAL MAPS Joe Tenerelli SMOS Calibration Meeting 18 26/05/2014."— Presentation transcript:

1 PART 2: A QUICK COMPARISON OF V504 AND V620 GLOBAL MAPS Joe Tenerelli SMOS Calibration Meeting 18 26/05/2014

2 Use only alias-free brightness temperatures, excluding border pixels within dir cosine units of border Brightness temperatures and retrieved SSS are projected onto earth dwell lines and averaged as usual. A single May 2011 OTT is applied to both May 2011 and November Additionally, for each map of (Tx+Ty)/2 bias for the two versions v504 and v620, the median bias is subtracted from the map. For the SSS bias maps and for the v620-v504 difference maps, no median offset is removed.

3 May 2011

4 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 May 2011; Ascending passes; V504

5 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 May 2011; Ascending passes; V620

6 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 May 2011; Descending passes; V504

7 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 May 2011; Descending passes; V620

8 RETRIEVED SALINITY May 2011; Ascending passes; V504

9 RETRIEVED SALINITY May 2011; Ascending passes; V620

10 RETRIEVED SALINITY May 2011; Descending-Ascending passes; V504

11 RETRIEVED SALINITY May 2011; Descending-Ascending passes; V620

12 November 2012

13 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 Nov 2012; Ascending passes; V504

14 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 Nov 2012; Ascending passes; V620

15 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 Nov 2012; Descending passes; V504

16 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 Nov 2012; Descending passes; V620

17 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 Nov 2012; Descending-Ascending passes; V504

18 FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2 Nov 2012; Descending-Ascending passes; V620

19 RETRIEVED SALINITY Nov 2012; Ascending passes; V504

20 RETRIEVED SALINITY Nov 2012; Ascending passes; V620

21 RETRIEVED SALINITY Nov 2012; Descending-Ascending passes; V504

22 RETRIEVED SALINITY Nov 2012; Descending-Ascending passes; V620

23 V620-V504 DIFFERENCES

24 RETRIEVED SALINITY May 2011; Ascending passes; V620-V504

25 BIAS IN (Tx+Ty)/2 May 2011; Ascending passes; V620-V504

26 RETRIEVED SALINITY Nov 2012; Descending passes; V620-V504

27 BIAS IN (Tx+Ty)/2 Nov 2012; Descending passes; V620-V504

28 THIRD STOKES PARAMETER IN INSTRUMENT BASIS

29 BIAS IN THIRD STOKES Nov 2012; Descending passes; V504

30 BIAS IN THIRD STOKES Nov 2012; Descending passes; V620

31 BIAS IN FOURTH STOKES Nov 2012; Descending passes; V504

32 BIAS IN FOURTH STOKES Nov 2012; Descending passes; V620

33 BOTTOM LINE: Land contamination still present in V620. Shadowing seems reduced for third Stokes in V620, but not for fourth Stokes. But the Fourth Stokes does look better over the open ocean in V620 than in V504.


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