Imaging · collection · 2013
SARAL Near-Real-Time Value-added Operational Geophysical Data Record Sea Surface Height Anomaly
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/akasa-xogd1
These data are near-real-time (NRT) (within 7-9 hours of measurement) sea surface height anomalies (SSHA) from the AltiKa altimeter onboard the Satellite with ARgos and ALtiKa (SARAL).
Description
SARAL is a French(CNES)/Indian(SARAL) collaborative mission to measure sea surface height using the Ka-band AltiKa altimeter and was launched February 25, 2013. The major difference between these data and the Operational Geophysical Data Record (OGDR) data produced by the project is that the orbit from SARAL has been adjusted using SSHA differences with those from the OSTM/Jason-2 GPS-OGDR-SSHA product at inter-satellite crossover locations.
This produces a more accurate NRT orbit altitude for SARAL with accuracy of 1.5 cm (RMS), taking advantage of the 1 cm (radial RMS) accuracy of the GPS-based orbit used for the OSTM/Jason-2 GPS-OGDR-SSHA product. This dataset also contains all data from the project (reduced) OGDR, and improved altimeter wind speeds and sea state bias correction. More information on the SARAL mission can be found at: aviso.oceanobs.com/en/missions/current-missions/saral.html
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
- Data Use and Citation Guidelines podaac.jpl.nasa.gov/CitingPODAAC ↗
documentation · download · from NASA CMR, data nasa gov
- Generic Data Readers github.com/podaac/data-readers ↗
documentation · download · from NASA CMR, data nasa gov
- User Guide archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/saral/preview/L2/XOGDR-SSHA/docs/READM… ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2251465126-POCLOUD.iso19115 ↗
download · from data nasa gov
- Resource harmony.earthdata.nasa.gov ↗
download · from data nasa gov
- github.com /podaac/data-subscriber ↗
This dataset can be downloaded using the podaac-data-subscriber (the recommended tool for bulk downloading PO.DAAC data). It is a Python package for downloading one or many files using the command lin
download · from NASA CMR
- HTTPS endpoint for data browse and download cmr.earthdata.nasa.gov/virtual-directory/collections/C2251465126-POCLOUD ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2251465126-POCLOUD ↗
Browse granule search results in Earthdata Search
download · from NASA CMR
- JPEG podaac.jpl.nasa.gov/Podaac/thumbnails/ALTIKA_SARAL_L2_OST_XOGDR.jpg ↗
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/saral-near-real-time-value-added-operational-geophysic… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/akasa-xogd1 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2251465126-POCLOUD.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=40759f6c-9ed4-46af-b5fc-50ff1d138… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2251465126-POCLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- ALTIKA Altimeter · Satellite with ARgos and ALtiKa · Sea Surface Height · Significant Wave Height
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
Provenance · 2 source records, 18 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2251465126-POCLOUD | 14 d ago | JSON v1 |
| NASA Data Portal | 40759f6c-9ed4-46af-b5fc-50ff1d13867c | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| 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:altika-altimeter | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-waves/significant-wave-height | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/sea-surface-topography/sea-surface-height | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:saral | 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 |