Imaging · collection · 2023
Multi-Mission Optimally Interpolated Sea Surface Salinity Global Dataset V2
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/smp20-4u7cs
This is a level 4 product on a 0.25-degree spatial and 4-day temporal grid.
Description
The product is derived from the level 2 swath data of three satellite missions: the Aquarius/SAC-D, Soil Moisture Active Passive (SMAP) and Soil Moisture and Ocean Salinity (SMOS) using Optimal Interpolation (OI) with a 7-day decorrelation time scale. The product offers a continuous record from August 28, 2011 to present by concatenating the measurements from Aquarius (September 2011 - June 2015) and SMAP (April 2015 present).
ESAs SMOS data was used to fill the gap in SMAP data between June and July 2019, when the SMAP satellite was in a safe mode. The two-month overlap (April - June 2015) between Aquarius and SMAP was used to ensure consistency and continuity in data record. The product covers the global ocean, including the Arctic and Antarctic in the areas free of sea ice, but does not cover internal seas such as Mediterranean and Baltic Sea.
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In-situ salinity from Argo floats and moored buoys are used to derive a large-scale bias correction and to ensure consistency and accuracy of the OISSS dataset. This dataset is produced by the Earth and Space Research (ESR), Seattle, WA and the International Pacific Research Center (IPRC) of the University of Hawaii at Manoa in collaboration with the Remote Sensing Systems (RSS), Santa Rosa, California. More details can be found in the users guide.
Links
Get the data
- Resource opendap.earthdata.nasa.gov ↗
This dataset can be accessed with the Open-source Project for a Network Data Access Protocol (OPeNDAP) API framework. This service enables variable and dimensional subsetting. The URL redirects to a p
metadata API · download · from NASA CMR, data nasa gov
- OISSS Level 4 Product Guide archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/smap/open/docs/OISSS_V2/OISSS_Product_… ↗
documentation · download · from NASA CMR, data nasa gov
- Mission and Instrument Overview podaac.jpl.nasa.gov/aquarius ↗
documentation · download · from NASA CMR, data nasa gov
- NASA Aquarius/SAC-D mission website aquarius.nasa.gov ↗
documentation · download · from NASA CMR, data nasa gov
- Earth and Space Research (ESR) esr.org/data-products/oisss ↗
documentation · download · from NASA CMR, data nasa gov
- Data Use and Citation Guidelines podaac.jpl.nasa.gov/CitingPODAAC ↗
documentation · download · from NASA CMR, data nasa gov
- SMOS Mission Website earth.esa.int/eogateway/missions/smos ↗
documentation · download · from NASA CMR, data nasa gov
- Generic data readers github.com/podaac/data-readers ↗
documentation · download · from NASA CMR, data nasa gov
- NASA SMAP Mission Website smap.jpl.nasa.gov ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2589160971-POCLOUD.iso19115 ↗
download · from data nasa gov
- JPEG podaac.jpl.nasa.gov/Podaac/thumbnails/OISSS_L4_multimission_7day_v2.jpg ↗
download · preview image · from data nasa gov, NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2589160971-POCLOUD ↗
Browse granule search results in Earthdata Search
download · from NASA CMR
- HTTPS endpoint for data browse and download cmr.earthdata.nasa.gov/virtual-directory/collections/C2589160971-POCLOUD ↗
download · from NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/multi-mission-optimally-interpolated-sea-surface-salin… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/smp20-4u7cs ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CKAN API data.nasa.gov/api/3/action/package_show?id=e46b1f16-56e3-426c-a60b-648c0bdbe… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2589160971-POCLOUD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2589160971-POCLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Aquarius Scatterometer · SAC-D · Salinity · SMAP L-Band Radiometer · Soil Moisture Active and Passive Observatory · Soil Moisture and Ocean Salinity (Earth Explorer Opportunity Mission)
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
- Inferred from text
- Hydrology 72% · Satellite remote sensing 65%
Provenance · 2 source records, 22 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2589160971-POCLOUD | 8 d ago | JSON v1 |
| NASA Data Portal | e46b1f16-56e3-426c-a60b-648c0bdbea2b | 5 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3707 | enrichment · NASA CMR | taxonomy-embedding@1.0.0 | title+keywords+description (72%) |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:aquarius-scatterometer | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:smap-l-band-radiometer | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/salinity-density/salinity | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:remote-sensing | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:sac-d | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:smap | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:smos | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |