New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits...
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![Page 1: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/1.jpg)
New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific
foam coverage exponent modified to 2.6 instead of 2.55 to better fit SMOS data obtained on 3 orbits (exponent still well inside uncertainties in existing measurements)
![Page 2: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/2.jpg)
Two-Scale without foam
Two-Scale with foam
SMOS SSS
SMOS SSS ECMWF WS
Validation over 1 month (August) in Pac. Ocean reprocessed at LOCEAN (ascending orbits only)
![Page 3: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/3.jpg)
Two-Scale with foamTwo-Scale without foam
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SSS comparisons
![Page 4: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/4.jpg)
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-1
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Wind Speed
Two-Scale without foam
SSS differences
Two-Scale with foam
![Page 5: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/5.jpg)
Two-Scale without foamSSS profilesMonthly average
Two-Scale with foam
When the new model is implemented, anomaly associated with ice border appears notrh of 55N => we have to change our zone of validation in the Pac from 45S-55S to 45s-50S ! This is an example of compensated errors (bad wind correction compensated ice contamination!)
![Page 6: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/6.jpg)
-4
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SS
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go-S
SS
smos
Wind speed (m/s)0 5 10 15 20 25
Colocations with ARGO (New model 1)
![Page 7: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/7.jpg)
Colocations with ARGO Center of track (<300km)
New model Old model
0 5 10 15 20 25 0 5 10 15 20 25 Wind speed (m/s) Wind speed (m/s)
-4
4
SSSsmos-SSSargo
South Pacific: N=9505all=0.12+/-1.26
ITCZ : N=15674all=-0.31+/-0.67
South Pacific: N=9615all=0.15+/-1.29
ITCZ : N=16291all=-0.16+/-0.67
![Page 8: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/8.jpg)
(IFREMER/CLS empirical)
New empirical model 2
New semi-theoretical model 1
In term of 1st stokes parameter, model 1 and model 2 are now close… but their dependence in incidence angle is different; need to introduce other dependencies in the processor for model 1 (air-sea temperature instability influence on foam coverage is now neglected but need to be tested…)
![Page 9: New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.](https://reader035.fdocuments.us/reader035/viewer/2022070414/5697c00f1a28abf838cca4fc/html5/thumbnails/9.jpg)
Colocations with ARGO Whole track
New model Old model
0 5 10 15 20 25 0 5 10 15 20 25 Wind speed (m/s) Wind speed (m/s)
-4
4
SSSsmos-SSSargo
South Pacific: N=19032all=0.02+/-1.70
ITCZ : N=26313all=-0.23+/-0.87
South Pacific: N=17493all=0.31+/-1.60
ITCZ : N=31970all=-0.05+/-1.03