SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006
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. 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].
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "NSIDC Services",
"@type": "vcard:Contact",
"hasEmail": "mailto:nsidc@nsidc.org"
}
|
| description | 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. 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]. |
| distribution |
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"downloadURL": "https://worldview.earthdata.nasa.gov/?v=-203%2C-77%2C152%2C87&l=SMAP_L2_Passive_Enhanced_Night_Soil_Moisture_Option3%2CSMAP_L2_Passive_Enhanced_Night_Soil_Moisture_Option2%2CSMAP_L2_Passive_Enhanced_Night_Soil_Moisture_Option1%2CSMAP_L2_Passive_Enhanced_Day_Soil_Moisture_Option3%2CSMAP_L2_Passive_Enhanced_Day_Soil_Moisture_Option2%2CSMAP_L2_Passive_Enhanced_Day_Soil_Moisture_Option1%2CCoastlines_15m%2CMODIS_Terra_CorrectedReflectance_TrueColor"
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|
| identifier | C2776463773-NSIDC_ECS |
| issued | 2015-03-31 |
| keyword |
[
"earth-science",
"land-surface",
"microwave",
"soils",
"spectral-engineering"
]
|
| landingPage | https://doi.org/10.5067/BN36FXOMMC4C |
| language |
[
"en-US"
]
|
| modified | 2025-07-17 |
| programCode |
[
"026:001"
]
|
| publisher |
{
"name": "NASA NSIDC DAAC",
"@type": "org:Organization"
}
|
| spatial | -180.0 -85.044 180.0 90.0 |
| temporal | 2015-03-31T00:00:00Z/2025-03-24T00:00:00Z |
| theme |
[
"geospatial"
]
|
| title | SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006 |
