Data · dataset · 2025
SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures V004
Listed in NASA Data Portal
This enhanced Level-1C (L1C) product contains calibrated and geolocated brightness temperatures acquired by the Soil Moisture Active Passive (SMAP) radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes.
Description
This product is derived from SMAP Level-1B (L1B) interpolated antenna temperatures. Backus-Gilbert optimal interpolation techniques are used to extract enhanced information from SMAP antenna temperatures before they are converted to brightness temperatures.
The resulting brightness temperatures are posted to an Earth-fixed, 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) in three projections: global cylindrical, Northern Hemisphere azimuthal, and Southern Hemisphere azimuthal.
Links
Get the data
- Google Scholar search results scholar.google.com/scholar?q=10.5067%2F99LHDR3NUM47 ↗
download · from data nasa gov
- Download this dataset through Earthdata Search search.earthdata.nasa.gov/search?q=SPL1CTB_E+V004 ↗
download · from data nasa gov
- Download this dataset cmr.earthdata.nasa.gov/virtual-directory/collections/C2938663435-NSIDC_CPRD ↗
download · from data nasa gov
- Get a related visualization through WORLDVIEW worldview.earthdata.nasa.gov/?v=-184%2C-74%2C162%2C86&l=SMAP_L1_Passive_Enhanced_Brightness… ↗
download · from data nasa gov
- This dataset's landing page doi.org/10.5067/99lhdr3num47 ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/smap-enhanced-l1c-radiometer-half-orbit-9-km-ease-grid… ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=f60b443b-a99b-498f-b9a5-a52a60433… ↗
metadata API · from data nasa gov
Topics
Related
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | f60b443b-a99b-498f-b9a5-a52a604336d4 | 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 |