Imaging · collection · 2018
Aquarius CAP Level 2 Sea Surface Salinity, Wind Speed & Direction Data V5.0
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/aqr50-2tocs
The version 5.0 Aquarius CAP Level 2 product contains the fourth release of the AQUARIUS/SAC-D orbital/swath data based on the Combined Active Passive (CAP) algorithm.
Description
CAP is a P.I. produced dataset developed and provided by JPL. This Level 2 dataset contains sea surface salinity (SSS), wind speed and wind direction data derived from 3 different radiometers and the onboard scatterometer.
The CAP algorithm simultaneously retrieves the salinity, wind speed and direction by minimizing the sum of squared differences between model and observations. The main improvements in CAP V5.0 relative to the previous version include: updates to the Geophysical Model Functions to 4th order harmonics with the inclusion of sea surface temperature (SST) and stability at air-sea interface effects; use of the Canadian Meteorological Center (CMC) SST product as the new source ancillary sea surface temperature data in place of NOAA OI SST.
Read the rest (3 more)
Each L2 data file covers one 98 minute orbit. The Aquarius instrument is onboard the AQUARIUS/SAC-D satellite, a collaborative effort between NASA and the Argentinian Space Agency Comision Nacional de Actividades Espaciales (CONAE). The instrument consists of three radiometers in push broom alignment at incidence angles of 29, 38, and 46 degrees incidence angles relative to the shadow side of the orbit.
Footprints for the beams are: 76 km (along-track) x 94 km (cross-track), 84 km x 120 km and 96km x 156 km, yielding a total cross-track swath of 370 km. The radiometers measure brightness temperature at 1.413 GHz in their respective horizontal and vertical polarizations (TH and TV). A scatterometer operating at 1.26 GHz measures ocean backscatter in each footprint that is used for surface roughness corrections in the estimation of salinity.
The scatterometer has an approximate 390km swath.
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
- Aquarius CAP V5.0 Algorithm and Data Users Guide archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/aquarius/open/docs/CAPv5/Aquarius-CAP-… ↗
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
- Mission and Instrument Overview podaac.jpl.nasa.gov/aquarius ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2205121315-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
- search.earthdata.nasa.gov /search/granules?p=C2205121315-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/C2205121315-POCLOUD ↗
download · from NASA CMR
- JPEG podaac.jpl.nasa.gov/Podaac/thumbnails/AQUARIUS_L2_SSS_CAP_V5.jpg ↗
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/aquarius-cap-level-2-sea-surface-salinity-wind-speed-d… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/aqr50-2tocs ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CKAN API data.nasa.gov/api/3/action/package_show?id=274e1281-a7a9-449c-a7da-0cb96cba4… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2205121315-POCLOUD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2205121315-POCLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Aquarius Radiometer · SAC-D · Salinity · Surface Wind Speed
- 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 | C2205121315-POCLOUD | 10 d ago | JSON v1 |
| NASA Data Portal | 274e1281-a7a9-449c-a7da-0cb96cba4f95 | 7 d ago | JSON v2 |
| 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:aquarius-radiometer | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-winds/surface-winds/surface-wind-speed | 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[platform].gcmd_platform:sac-d | 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 |