Array · collection · 2016
SMAP L3 Radar Northern Hemisphere Daily 3 km EASE-Grid Freeze/Thaw State V003
Listed in NASA Earthdata CMR
This Level-3 (L3) product provides a daily composite of Northern Hemisphere landscape freeze/thaw conditions retrieved by the Soil Moisture Active Passive (SMAP) radar from 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes.
Description
SMAP L-band backscatter data are used to derive freeze/thaw data, which are then resampled to an Earth-fixed, Northern Hemisphere azimuthal 3 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0).
Links
Get the data
- nsidc.org /data/data-access-tool/SPL3FTA/versions/3 ↗
Search data by spatial and/or temporal ranges or file name. Choose from various download options, including a Python script.
download · from NASA CMR
- earthaccess.readthedocs.io /en/stable ↗
A Python library to search and access NASA Earth science data with just a few lines of code
download · from NASA CMR
- cmr.earthdata.nasa.gov /virtual-directory/collections/C2872766057-NSIDC_CPRD ↗
Quickly download a few files using a web browser, or access data through a command-line utility such as WGET.
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2872766057-NSIDC_CPRD ↗
Search and order NASA Earth Science data using spatial and temporal filters. Reformatting, reprojecting, and subsetting options are available for some data sets.
download · from NASA CMR
Where it is published
- DOI doi.org/10.5067/cpsa0m496mgb ↗
Provides access to data, documentation, tools, citation information, support, and other resources.
landing page · documentation · DOI / persistent id · from NASA CMR
Documentation and papers
- SMAP Post-Recovery Advisory Note 23 July 2019 nsidc.org/sites/default/files/smap20post-recovery20advisory20note.pdf ↗
documentation · from NASA CMR
- nsidc.org /sites/default/files/spl3fta-v003-userguide.pdf ↗
SMAP L3 Radar Northern Hemisphere Daily 3 km EASE-Grid Freeze/Thaw State, Version 3 User Guide
documentation · from NASA CMR
- nsidc.org /sites/default/files/284_042_landcover.pdf ↗
SMAP Ancillary Data Report: Landcover Classification [2013]
documentation · from NASA CMR
- nsidc.org /sites/default/files/d-72549_smap20l3_ft_a20psd_10122015_wo-sig… ↗
SPL3FTA Product Specification Document Version 1 [2015]
documentation · from NASA CMR
- SPL3FTA Assessment Report Version 3 [2016] nsidc.org/sites/default/files/smap20l3_ft_a20validated20assessment20repo… ↗
documentation · from NASA CMR
- nsidc.org /sites/default/files/274_l3_ft_a_reva_web_0.pdf ↗
SPL3FTA Algorithm Theoretical Basis Document [2014]
documentation · from NASA CMR
- worldview.earthdata.nasa.gov /?v=-4063232%2C-3477504%2C4063232%2C3477504&p=arctic&l=Coastlin… ↗
Interactively browse and download global satellite imagery within hours of acquisition.
preview image · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2872766057-NSIDC_CPRD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2872766057-NSIDC_CPRD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Freeze/Thaw · Sigma Naught · SMAP L-Band Radar · Soil Moisture Active and Passive Observatory · Transition Direction
Provenance · 1 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2872766057-NSIDC_CPRD | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:smap-l-band-radar | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice/freeze-thaw | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice/freeze-thaw/transition-direction | 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:smap | 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 |
| 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 |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |