Array · collection · 2023
SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006
Listed in NASA Earthdata CMR
This enhanced Level-2 (L2) product contains calibrated, 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 maximum information from SMAP antenna temperatures and convert them to brightness temperatures, which are posted to the 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) in a global cylindrical projection [available as the SPl1CTB_E product].
As of 2021, the data are also posted to the Northern Hemisphere EASE-Grid 2.0, an azimuthal equal-area projection. These 9-km brightness temperatures are then used to retrieve surface soil moisture posted on the 9-km grid [this SPL2SMP_E product].
Links
Get the data
- cmr.earthdata.nasa.gov /virtual-directory/collections/C2938663676-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=C2938663676-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
- 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
- nsidc.org /data/data-access-tool/SPL2SMP_E/versions/6 ↗
Search data by spatial and/or temporal ranges or file name. Choose from various download options, including a Python script.
download · from NASA CMR
Where it is published
- DOI doi.org/10.5067/bn36fxommc4c ↗
Provides access to data, documentation, tools, citation information, support, and other resources.
landing page · documentation · DOI / persistent id · from NASA CMR
Documentation and papers
- nsidc.org /sites/default/files/documents/user-guide/spl2smp_e-v006-usergu… ↗
SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 6 User Guide
documentation · from NASA CMR
- nsidc.org /sites/default/files/l2_sm_p_atbd_rev_g_final_oct2021_0.pdf ↗
SPL2/3SMP/_E Algorithm Theoretical Basis Document [2021]
documentation · from NASA CMR
- SPL2SMP_E Product Specification Document [2021] nsidc.org/sites/default/files/d5629120smap20l2_sm_p_e20psd_version2050_f… ↗
documentation · from NASA CMR
- worldview.earthdata.nasa.gov /?v=-203%2C-77%2C152%2C87&l=SMAP_L2_Passive_Enhanced_Night_Soil… ↗
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/C2938663676-NSIDC_CPRD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2938663676-NSIDC_CPRD.html ↗
catalogue entry · from NASA CMR
Topics
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2938663676-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-radiometer | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/land-surface/soils/soil-moisture-water-content/surface-soil-moisture | 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[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 |