Imaging · collection · 2023
SWOT Level 2 Radiometer Brightness Temperatures and Troposphere Interim Data Product
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/swot-rad-igdr-1.0
Description
The SWOT Level 2 Radiometer Brightness Temperatures and Troposphere Interim Geophysical Data Record (IGDR) Version 1.0 dataset produced by the Surface Water and Ocean Topography (SWOT) mission provides atmospheric water vapor and liquid water content from the Advanced Microwave Radiometer (AMR), a Jason-class radiometer that measures sea surface brightness temperatures at three microwave frequencies (18.7, 23.8 and 34 GHz).
Brightness temperatures are processed to estimate the wet troposphere content, atmospheric attenuation to backscatter, cloud liquid water, water vapor content, and wind speed coincident with each range measurement from the nadir altimeter and applied to correct for altimeter range delays caused by atmospheric effects. SWOT is a joint mission between NASA and CNES that launched on December 16, 2022. It aims to measure ocean surface topography with unprecedented resolution and accuracy, as well as map inland water bodies globally.
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The interim radiometer dataset consists of discrete measurements along two tracks located approximately 30-km to the left and right of the satellite nadir. The data were processed using the Medium-accuracy (preliminary) Orbit Ephemeris (MOE) with preliminary calibrations applied. They are distributed as one file per half-orbit in netCDF4 file format with a nominal latency of < 1.5 days.
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
- SWOT Mission Page at AVISO aviso.altimetry.fr/en/missions/current-missions/swot.html ↗
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
- SWOT Mission Page swot.jpl.nasa.gov ↗
documentation · download · from NASA CMR, data nasa gov
- SWOT Mission Page at NASA nasa.gov/swot ↗
documentation · download · from NASA CMR, data nasa gov
- SWOT Mission Page at JPL jpl.nasa.gov/missions/surface-water-and-ocean-topography-swot ↗
documentation · download · from NASA CMR, data nasa gov
- SWOT Mission Page at PO.DAAC podaac.jpl.nasa.gov/swot ↗
documentation · download · from NASA CMR, data nasa gov
- Algorithm Theoretical Basis Document (ATBD) archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/atbd/D-1058… ↗
documentation · download · from NASA CMR, data nasa gov
- Product Description Document (PDD) archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/pdd/D-56417… ↗
documentation · download · from NASA CMR, 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/C2799438351-POCLOUD ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2799438351-POCLOUD ↗
Browse granule search results in Earthdata Search
download · from NASA CMR
- JPEG podaac.jpl.nasa.gov/Podaac/thumbnails/SWOT_L2_RAD_IGDR_1.0.jpg ↗
download · from data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2296989388-POCLOUD.iso19115 ↗
download · from data nasa gov
- PDF archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/D-109532_SW… ↗
download · from data nasa gov
- Resource cmr.earthdata.nasa.gov/virtual-directory/collections/C2296989388-POCLOUD ↗
download · from data nasa gov
- Resource search.earthdata.nasa.gov/search/granules?p=C2296989388-POCLOUD ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/swot-level-2-radiometer-brightness-temperatures-and-tr… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/swot-rad-igdr-1.0 ↗
DOI / persistent id · from NASA CMR
Documentation and papers
- SWOT User Handbook archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/D-109532_SW… ↗
documentation · from NASA CMR
- Thumbnail podaac.jpl.nasa.gov/Podaac/thumbnails/SWOT_DEFAULT_THUMBNAIL.jpg ↗
preview image · from NASA CMR
Catalogue records · 3
- CKAN API data.nasa.gov/api/3/action/package_show?id=f2ddc087-f3f0-40a3-aa72-72d138c34… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2799438351-POCLOUD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2799438351-POCLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- AMR · Atmospheric Water Vapor · Brightness Temperature · Cloud Liquid Water/Ice · Land/Ocean/Ice Fraction · Sea Ice · Sigma Naught · Surface Water Ocean Topography · Wind Speed
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
- Inferred from text
- Atmospheric sciences 71%
Provenance · 2 source records, 25 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2799438351-POCLOUD | 12 d ago | JSON v1 |
| NASA Data Portal | f2ddc087-f3f0-40a3-aa72-72d138c342db | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3701 | enrichment · NASA CMR | taxonomy-embedding@1.0.0 | title+keywords+description (71%) |
| 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:engineering | 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:amr | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-water-vapor | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-winds/surface-winds/wind-speed | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds/cloud-microphysics/cloud-liquid-water-ice | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/sea-ice | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/geological-features/land-ocean-ice-fraction | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/microwave/brightness-temperature | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/sigma-naught | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:swot | 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 |