For direct download of daily composites, use this link and complete the pattern for with daily composite filename:
where yyyy = Year and ddd=day of year. SMAP files are available from the beginning of 2015 to present.
Please acknowledge "NOAA CoastWatch/OceanWatch" when you use data from our site and cite the particular dataset DOI as appropriate.
CoastWatch/OceanWatch produces 0.25-degree longitude/latitude Level-3 gridded sea-surface salinity (SSS) daily mean dataset by box averaging Soil Moisture Active Passive (SMAP) satellite observations over the global ocean. Daily files are available back to the beginning of 2015.
CoastWatch/OceanWatch Level-3 SSS products are generated directly from the NASA Jet Propulsion Laboratory (JPL) SMAP Level-2B SSS near real time swath HDF5 files. These products improve the application of satellite SSS products in NOAA by minimizing the data latency to within 24 hours of Level-2 data availability.
Soil Moisture Active Passive (SMAP)
Sea Surface Salinity and Sea Surface Wind Speed
|Short Name|| |
SMAP SSS, SMAP SSW
|Sample Filename|| |
|Processing Level|| |
CoastWatch Level-3 from NASA JPL Level-2B
|Spatial Coverage|| |
|Temporal Coverage|| |
From 1 April 2015 to present
within 24 h from the availabilityof L2 data
30 km nominal sensor resolution; CoastWatch Level-3 product is gridded to 0.25º (~25 km)
|Swath Width|| |
29 km x 35 km
|Sample Frequency|| |
|Temporal Repeat|| |
|Orbital Period|| |
circular polar-orbiting at 685 km (426 mi) altitude with 8-day repeating ground track
|Data Provider|| |
Level 2B SMAP from NASA JPL
(CoastWatch PNGs in process)
SMAP, salinity, SSS