Data · dataset · 2025
SMAP Enhanced L3 Radiometer Global and Northern Hemisphere Daily 9 km EASE-Grid Freeze/Thaw State V004
Listed in NASA Data Portal
This enhanced Level-3 (L3) product provides a daily composite of global and Northern Hemisphere landscape freeze/thaw conditions retrieved by the Soil Moisture Active Passive (SMAP) radiometer from 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes.
Description
This product is derived from SMAP enhanced Level-1C brightness temperatures (SPL1CTB_E). Backus-Gilbert optimal interpolation techniques are used to extract maximum information from SMAP antenna temperatures and convert them to brightness temperatures.
The data are then posted to two 9 km Earth-fixed, Equal-Area Scalable Earth Grids, Version 2.0 (EASE-Grid 2.0): a global cylindrical and a Northern Hemisphere azimuthal.
Links
Get the data
- Download this dataset through Earthdata Search search.earthdata.nasa.gov/search?q=SPL3FTP_E+V004 ↗
download · from data nasa gov
- Download this dataset cmr.earthdata.nasa.gov/virtual-directory/collections/C2938664439-NSIDC_CPRD ↗
download · from data nasa gov
- Get a related visualization through WORLDVIEW worldview.earthdata.nasa.gov/?v=-208%2C-76%2C149%2C89&l=SMAP_L3_Passive_Enhanced_Night_Free… ↗
download · from data nasa gov
- Google Scholar search results scholar.google.com/scholar?q=10.5067%2FNQLCDOZJYAKX ↗
download · from data nasa gov
- This dataset's landing page doi.org/10.5067/nqlcdozjyakx ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/smap-enhanced-l3-radiometer-global-and-northern-hemisp… ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=1c1e51c1-1c24-4aad-b4a9-b71fb0e65… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Earth & Environmental Science
Related
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | 1c1e51c1-1c24-4aad-b4a9-b71fb0e657c5 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | 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 |