Data · dataset · 2025
Near Real-time SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures V105
Listed in NASA Data Portal
This Near Real-Time (NRT) data set corresponds to the standard SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures (SPL1BTB) product.
Description
The data provide calibrated estimates of time-ordered geolocated brightness temperature data measured by the Soil Moisture Active Passive (SMAP) passive microwave radiometer, the SMAP L-band radiometer. These Near Real-Time data are available within three hours of satellite observation.
The data are created using the latest available ancillary data and spacecraft and antenna attitude data to reduce latency. The SMAP satellite orbits Earth every two to three days, providing half-orbit, ascending and descending, coverage from 86.4°S to 86.4°N in swaths 1000 km across. Data are stored for approximately two to three weeks.
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Thus, at any given time, users have access to at least fourteen consecutive days of Near Real-Time data through the NSIDC DAAC. Users deciding between the NRT and standard SMAP products should consider the immediacy of their needs versus the quality of the data required. Near real-time data are provided for operational needs whereas standard products meet the quality needs of scientific research.
If latency is not a primary concern, users are encouraged to use the standard science product, SPL1BTB ( doi.org/10.5067/ZHHBN1KQLI20 ).
Links
Get the data
- Google Scholar search results scholar.google.com/scholar?q=10.5067%2FUH70WUPQKCFR ↗
download · from data nasa gov
- Download this dataset n5eil01u.ecs.nsidc.org/SMAP/SPL1BTB_NRT.105 ↗
download · from data nasa gov
- Download this dataset nsidc.org/data/data-access-tool/SPL1BTB_NRT/versions/105 ↗
download · from data nasa gov
- Download this dataset through Earthdata Search search.earthdata.nasa.gov/search?q=SPL1BTB_NRT+V105 ↗
download · from data nasa gov
- Download this dataset daacdata.apps.nsidc.org/pub/DATASETS/SMAP/SPL1BTB_NRT.105 ↗
download · from data nasa gov
- Get a related visualization through WORLDVIEW worldview.earthdata.nasa.gov/?v=-188%2C-85%2C183%2C86&l=SMAP_L1_Passive_Faraday_Rotation_Fo… ↗
download · from data nasa gov
- View documentation related to this dataset doi.org/10.5067/uh70wupqkcfr ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/near-real-time-smap-l1b-radiometer-half-orbit-time-ord… ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=b396a0e4-de56-45ca-861f-6d54c5b0e… ↗
metadata API · from data nasa gov
Topics
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | b396a0e4-de56-45ca-861f-6d54c5b0e892 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:field:400608 | mapping · data nasa gov | vocabulary-mapper@1.0.0 | keywords['microwave'] |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | vocabulary-mapper@1.0.0 | keywords['earth-science'] |
| concepts[field].local:field:engineering | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| 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 |