Post on 03-Jan-2016
description
PART 2: A QUICK COMPARISON OF V504 AND V620 GLOBAL MAPS
Joe TenerelliSMOS Calibration Meeting 18
26/05/2014
Use only alias-free brightness temperatures, excluding border pixels within 0.044 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 2012.
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.
May 2011
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
May 2011; Ascending passes; V504
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
May 2011; Ascending passes; V620
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
May 2011; Descending passes; V504
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
May 2011; Descending passes; V620
RETRIEVED SALINITY
May 2011; Ascending passes; V504
RETRIEVED SALINITY
May 2011; Ascending passes; V620
RETRIEVED SALINITY
May 2011; Descending-Ascending passes; V504
RETRIEVED SALINITY
May 2011; Descending-Ascending passes; V620
November 2012
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
Nov 2012; Ascending passes; V504
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
Nov 2012; Ascending passes; V620
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
Nov 2012; Descending passes; V504
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
Nov 2012; Descending passes; V620
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
Nov 2012; Descending-Ascending passes; V504
FIRST STOKES PARAMETER DIVIDED BY TWO (Tx+Ty)2
Nov 2012; Descending-Ascending passes; V620
RETRIEVED SALINITY
Nov 2012; Ascending passes; V504
RETRIEVED SALINITY
Nov 2012; Ascending passes; V620
RETRIEVED SALINITY
Nov 2012; Descending-Ascending passes; V504
RETRIEVED SALINITY
Nov 2012; Descending-Ascending passes; V620
V620-V504 DIFFERENCES
RETRIEVED SALINITY
May 2011; Ascending passes; V620-V504
BIAS IN (Tx+Ty)/2
May 2011; Ascending passes; V620-V504
RETRIEVED SALINITY
Nov 2012; Descending passes; V620-V504
BIAS IN (Tx+Ty)/2
Nov 2012; Descending passes; V620-V504
THIRD STOKES PARAMETER IN INSTRUMENT BASIS
BIAS IN THIRD STOKES
Nov 2012; Descending passes; V504
BIAS IN THIRD STOKES
Nov 2012; Descending passes; V620
BIAS IN FOURTH STOKES
Nov 2012; Descending passes; V504
BIAS IN FOURTH STOKES
Nov 2012; Descending passes; V620
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.