Imaging · dataset · 2025
RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image 8-Day Running Mean V5.3 Validated Dataset
Listed in NASA Data Portal
Description
The RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image 8-Day Running Mean V5.3 Validated Dataset produced by the Remote Sensing Systems (RSS) and sponsored by the NASA Ocean Salinity Science Team, is a validated product that provides orbital/swath data on sea surface salinity (SSS) derived from the NASA's Soil Moisture Active Passive (SMAP) mission. The SMAP satellite was launched on 31 January 2015 with a near-polar orbit at an inclination of 98 degrees and an altitude of 685 km.
It has an ascending node time of 6 pm and is sun-synchronous. With its 1000km swath, SMAP achieves global coverage in approximately 3 days, but has an exact orbit repeat cycle of 8 days. Malfunction of the SMAP scatterometer on 7 July, 2015, has necessitated the use of collocated wind speed, primarily from WindSat, for the surface roughness correction required for the surface salinity retrieval.
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The evaluation Version 5.3 is identical to the Version 6.0 validated release with the exception that Version 5.3 uses the Version 5 L1B TA as input. The V6 L1B TA uses a lower TA threshold for RFI exclusion. Until the full back-processing of V6.0 is complete, the evaluation Version 5.3 can and should be used instead.
Version 5.3 has been processed from the beginning of the SMAP mission to the end of 2023, and each data file is available in netCDF-4 file format. Observations are global in extent with an approximate spatial resolution of 40KM. Note that while a SSS 40KM variable is also included in the product for most open ocean applications, The standard product of the SMAP Version 5.3 release is the smoothed salinity product with a spatial resolution of approximately 70 km.
Links
Get the data
- Google Scholar search results scholar.google.com/scholar?q=10.5067%2FSMP53-3SPCS ↗
download · from data nasa gov
- View documentation related to this dataset archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/smap/open/docs/V6/ATBD_EOM_final.pdf ↗
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- View documentation related to this dataset smap.jpl.nasa.gov ↗
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- View documentation related to this dataset remss.com/missions/smap ↗
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- View this dataset's documented anomalies archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/smap/open/L3/RSS/README.txt ↗
download · from data nasa gov
- View documentation related to this dataset podaac.jpl.nasa.gov/smap ↗
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- View this dataset's documented anomalies images.remss.com/figures/missions/smap/bad_ancillaries.txt ↗
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- View this dataset's documented anomalies images.remss.com/figures/missions/smap/bad_orbits.txt ↗
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- View this dataset's user's guide archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/smap/open/docs/V6/Release_V6.0.pdf ↗
download · from data nasa gov
- View this dataset's documented anomalies archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/aquarius/open/README.KnownIssues.txt ↗
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- Get a related visualization podaac.jpl.nasa.gov/Podaac/thumbnails/SMAP_RSS_L3_SSS_SMI_8DAY-RUNNINGMEAN_V6.jpg ↗
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- View this dataset's data citation policy podaac.jpl.nasa.gov/CitingPODAAC ↗
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- Download this dataset through a directory map cmr.earthdata.nasa.gov/virtual-directory/collections/C2951822554-POCLOUD ↗
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- Download this dataset through Earthdata Search search.earthdata.nasa.gov/search/granules?p=C2951822554-POCLOUD ↗
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- View this dataset's data recipes github.com/podaac/data-readers ↗
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- Resource github.com/podaac/data-subscriber ↗
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Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/rss-smap-level-3-sea-surface-salinity-standard-mapped-… ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=d46a66e8-a029-4418-9af0-3ceab7f6f… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Hydrology 69% · Image 75% · Satellite remote sensing 65%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | d46a66e8-a029-4418-9af0-3ceab7f6f1cb | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:3707 | enrichment · data nasa gov | taxonomy-embedding@1.1.0 | title+keywords+description (69%) |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | vocabulary-mapper@1.0.0 | keywords['earth-science'] |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · data nasa gov | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:remote-sensing | enrichment · data nasa gov | keyword-concept-rules@1.0.0 | title+description (65%) |
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |