Minimize Sea Surface Salinity

Sea Surface Salinity retrieval performances are presented in the figures and videos collection available here below.

 

Chapter Editor

IDEAS+ SMOS team

 

 

Ocean Target Transformation (OTT) correction is computed daily by using about 10 previous orbits acquired over selected area and an ocean forward model. The OTT it is used to remove spatial biases in the brightness temperature images and it is needed to retrieve sea surface salinity. The plot shows the OTT latency time defined as the differences between the mean acquisition time of 10 orbits and the sensing time of the data acquisition processed with the OTT. Nominal latency time is about 6 days, periods with higher latency time indicates lack of data as in January 2011 due to on board execution of the instrument electrical stability test, or data rejection due to Radio Frequency Interference corrupted measurement as for example in April 2014.

 

Evolution of the number of grid points with good quality sea surface salinity retrieved from SMOS measurements corrected for land-sea contamination and uncorrected since June 2010. Ascending orbit direction. Upper plot all grid points over ocean, bottom plot only for ocean grid points near the coast line (< 800 km).

 

Evolution of the number of grid points with good quality sea surface salinity retrieved from SMOS measurements corrected for land-sea contamination and uncorrected since June 2010. Descending orbit direction. Upper plot all grid points over ocean, bottom plot only for ocean grid points near the coast line (< 800 km).

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SSS-CORR_ASC   SSS-CORR_DES


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Weekly maps of  good quality sea surface salinity retrieved from SMOS measurements and corrected for land-sea contamination for ascending orbit direction.  Lack of data in the maps is mainly due to contamination from Radio Frequency  Interference (RFI)  coming from land sites or ships and presence of sea-ice.
Weekly maps of  good quality sea surface salinity retrieved from SMOS measurements and corrected for land-sea contamination for descending orbit direction.  Lack of data in the maps is mainly due to contamination from Radio Frequency  Interference (RFI)  coming from land sites or ships and presence of sea-ice.  Seasonal lack of good retrieval in North Hemisphere is present during the period from November to February.