18 orbits in Eastern Pacific 10-22 August reprocessed by ARGANS using : -EAFFOV -only AFFOV
Www.argans.co.uk SMOS L2 Ocean Salinity L1OP v620 border flag width 23 May 2014 ARGANS & L2OS ESL...
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www.argans.co SMOS L2 Ocean Salinity L1OP v620 border flag width 23 May 2014 ARGANS & L2OS ESL 0.01 0.02
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Transcript of Www.argans.co.uk SMOS L2 Ocean Salinity L1OP v620 border flag width 23 May 2014 ARGANS & L2OS ESL...
www.argans.co.uk
SMOS L2 Ocean Salinity
L1OP v620 border flag width
23 May 2014
ARGANS & L2OS ESL
0.01 0.02
www.argans.co.uk
SMOS L2 Ocean Salinity
Smaller border width -> more retrievals
0.0 0.01 0.015 0.02
Ascending orbit 20110519T173027
www.argans.co.uk
SMOS L2 Ocean Salinity
Smaller border width -> lower Sigma_SSSImpact is at edges of swath > ±300 km
No impact from belt/braces
Ascending orbit 20110519T173027
Cross-track transect at 20N
Land impact?
www.argans.co.uk
SMOS L2 Ocean Salinity
At ~50S different border width changes number of measurements -> increased Stokes3 std/ra-> false RFI detection -> need to change RFI thresholds
0.0 0.01 0.02
Descending orbit 20121119T045059 (eclipse contaminated)
www.argans.co.uk
SMOS L2 Ocean Salinity
Smaller border width -> lower Sigma_SSSImpact is at edges of swath > ±300 km
No impact from belt/braces
Descending orbit 20121119T045059 (eclipse contaminated)
Land/ice impact?
Cross-track transect at 0N
www.argans.co.uk
SMOS L2 Ocean Salinity
Conclusions
• OTT may correct higher biases at borders, so data could be useful
• Border flag indicates decreased quality due to aliasing
• Impact of border flag width on L2OS in open ocean seen only at edges of swath
• Land near FOV may distort border flag TBs
• Maybe use width 0.015, as 0.01 sometimes misses edges of FOV?
• Need L1 radiometric analysis
L1 border flag width
