RSS SMAP Level 3 sea surface salinity standard mapped image
SMAP Sea Surface Salinity V2.0 70km Dataset from Remote Sensing Systems Released
[25-Apr-2018] The Physical Oceanography Distributed Active Archive Center (PO.DAAC) is pleased to announce the availability of updated version 2.0 SMAP Sea Surface Salinity (SSS) data from Remote Sensing Systems
(RSS) at a spatial resolution of 70km.
As is the case for the 40-km resolution product, the 70-km product is resampled onto a 0.25° fixed Earth grid using a Backus-Gilbert type optimum interpolation (OI). In the case of the 70-km product, the target cell of the OI is a circular footprint with a diameter of 70 km. Compared to the 40-km product, the 70-km is spatially smoother and the random noise is reduced by 60%. For most oceanographic applications, it is recommended that the new 70-km product be used.
Data sets comprising this release include the Level 2C orbital data and two Level 3 mapped salinity products: an 8-day running mean product based on the repeat orbit of the SMAP mission, along with a monthly average product. All products are in the netCDF4 file format, and the L3 products are CF/ACDD metadata standards compliant. The formats of the 40km and 70 km products are the same.
The SMAP-SSS V2.0 70km data sets are described and discoverable via the PO.DAAC data portal
. Access to these data is via PO.DAAC's public FTP site ftp://podaac.jpl.nasa.gov/allData/smap/
. The data are also accessible via a range of PO.DAAC tools and services: OPeNDAP
The SMAP Algorithm Theoreotical Basis Document (ATBD), validation analysis and file specification document together with other primary technical documentation
, are available from the FTP site together with reader software
. General information regarding the SMAP mission is available from the mission website
and also via PO.DAAC's SMAP
Should you have any questions, please contact us at firstname.lastname@example.org