roughness model deltas v550 otts made from repr v504 l1c
DESCRIPTION
Roughness model deltas v550 OTTs made from REPR v504 L1c. 30 January 2012. ARGANS. v550 OTTs made from REPR v504 L1c. OTT1-OTT2: -0.56 KOTT1-OTT3 +0.33 K. v550 OTTs made from REPR v504 L1c. OTT1-OTT2: -0.57 KOTT1-OTT3 +0.30 K. v550 OTTs made from REPR v504 L1c. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/1.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
Roughness model deltas
v550 OTTs made fromREPR v504 L1c
30 January 2012
ARGANS
![Page 2: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/2.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.56 K OTT1-OTT3 +0.33 K
![Page 3: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/3.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.57 K OTT1-OTT3 +0.30 K
![Page 4: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/4.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.22 K OTT1-OTT3 +0.18 K
![Page 5: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/5.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.22 K OTT1-OTT3 +0.19 K
![Page 6: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/6.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.45 K OTT1-OTT3 +0.23 K
![Page 7: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/7.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.45 K OTT1-OTT3 +0.22 K
![Page 8: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/8.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.44 K OTT1-OTT3 +0.23 K
![Page 9: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/9.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
v550 OTTs made from REPR v504 L1c
OTT1-OTT2: -0.43 K OTT1-OTT3 +0.20 K
![Page 10: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/10.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
Conclusions:
• Very small differences between ascending & descending OTT1/2/3 deltas
• Models are biased, especially in HH & in AFFOV:
OTT1-OTT2: -0.56 K OTT1-OTT3 +0.33 K OTT2-OTT3 +0.89 K
• Maybe deltas in Stokes 3 & 4 too – not tested
• Biases are corrected by OTTs
• Which model is nearer to ‘ground-truth’?
![Page 11: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/11.jpg)
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SMOS L2 Ocean Salinity
delta OTT1 – OTT2, descending 20111109 (event 54)
Why strong delta at top edge of VV?
![Page 12: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/12.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
delta OTT1 – OTT2, ascending 20111109 (event 54)
Why strong delta at top edge of VV?
![Page 13: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/13.jpg)
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SMOS L2 Ocean Salinity
delta OTT1 – OTT2, ascending 20100704 (event 21)
Why strong delta at top edge of VV, independent of sun, ascending/descending, year, etc?
![Page 14: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/14.jpg)
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SMOS L2 Ocean Salinity
delta OTT3 – OTT2, ascending 20100704 (event 21)
Delta at top edge in VV seems to come from model 2?
![Page 15: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/15.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
delta OTT1 – OTT3, ascending 20100704 (event 21)
Strong gradient in HH?
![Page 16: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/16.jpg)
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SMOS L2 Ocean Salinity
delta OTT2 – OTT3, ascending 20100704 (event 21)
Strong gradient in HH seems to come from model 3?
![Page 17: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/17.jpg)
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SMOS L2 Ocean Salinity
delta OTT1 – OTT2, cross-pol, ascending 20100704 (event 21)
Strange pattern in Stokes 3?
![Page 18: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/18.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
delta OTT1 – OTT2, cross-pol, ascending 20100704 (event 21)
Strange pattern in Stokes 3, hhv & vvh?
![Page 19: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/19.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
delta OTT3 – OTT2, cross-pol, ascending 20100704 (event 21)
Strange pattern in Stokes 3, from model 2?
![Page 20: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/20.jpg)
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SMOS L2 Ocean Salinity
Reprocessed v550 L2OS
20110704T014904, filtered by poor(retrieval or geophysical)Problem in SSS1 at edges in EAFFOV: wind/TEC/???
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www.argans.co.uk
SMOS L2 Ocean Salinity
Reprocessed v550 L2OS
20110704T141932, filtered by poor(retrieval or geophysical)Problem in SSS1 at edges in EAFFOV: wind?
![Page 22: Roughness model deltas v550 OTTs made from REPR v504 L1c](https://reader034.vdocuments.site/reader034/viewer/2022051416/56814589550346895db2715b/html5/thumbnails/22.jpg)
www.argans.co.uk
SMOS L2 Ocean Salinity
Conclusions:
• Does delta OTT1/2/3 indicate any algorithm issues?
• Does delta SSS1/2/3 in EAFFOV indicate problem with WS in SSS1?
• Why only in EAFFOV?
• Also at leading/trailing edges of snapshot inside swath, but hidden?
• How can we work towards unification of SSS1/2/3?