NASMo-TiAM 250m 16-day North America Surface Soil Moisture Dataset
This NASMo-TiAM (North America Soil Moisture Dataset Derived from Time-Specific Adaptable Machine Learning Models) dataset holds gridded estimates of surface soil moisture (0-5 cm depth) at a spatial resolution of 250 meters over 16-day intervals from mid-2002 to December 2020 for North America. The model employed Random Forests to downscale coarse-resolution soil moisture estimates (0.25 deg) from the European Space Agency Climate Change Initiative (ESA CCI) based on their correlation with a set of static (terrain parameters, bulk density) and dynamic covariates (Normalized Difference Vegetation Index, land surface temperature). NASMo-TiAM 250m predictions were evaluated through cross-validation with ESA CCI reference data and independent ground-truth validation using North American Soil Moisture Database (NASMD) records. The data are provided in cloud optimized GeoTIFF format.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "Earthdata Forum",
"@type": "vcard:Contact",
"hasEmail": "mailto:earthdata-support@nasa.gov"
}
|
| description | This NASMo-TiAM (North America Soil Moisture Dataset Derived from Time-Specific Adaptable Machine Learning Models) dataset holds gridded estimates of surface soil moisture (0-5 cm depth) at a spatial resolution of 250 meters over 16-day intervals from mid-2002 to December 2020 for North America. The model employed Random Forests to downscale coarse-resolution soil moisture estimates (0.25 deg) from the European Space Agency Climate Change Initiative (ESA CCI) based on their correlation with a set of static (terrain parameters, bulk density) and dynamic covariates (Normalized Difference Vegetation Index, land surface temperature). NASMo-TiAM 250m predictions were evaluated through cross-validation with ESA CCI reference data and independent ground-truth validation using North American Soil Moisture Database (NASMD) records. The data are provided in cloud optimized GeoTIFF format. |
| distribution |
[
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"title": "Data Information (JPEG)",
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"mediaType": "image/jpeg",
"downloadURL": "https://daac.ornl.gov/CMS/guides/NASMo_TiAM_250m_Fig1.jpg"
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|
| identifier | 10.3334/ORNLDAAC/2326 |
| keyword |
[
"earth-science-land-surface-agriculture-indicators-climate-indicators-soil-moisture",
"earth-science-soils-land-surface-soil-moisture-water-content"
]
|
| landingPage | https://search.earthdata.nasa.gov/search?q=NASMo_TiAM_250m_2326&ac=true |
| modified | 2026-02-17 |
| programCode |
[
"026:000"
]
|
| publisher |
{
"name": "ORNL_DAAC",
"@type": "org:Organization"
}
|
| spatial |
"[[{"WestBoundingCoordinate":-180.0,"NorthBoundingCoordinate":82.7193,"EastBoundingCoordinate":-39.9955,"SouthBoundingCoordinate":14.5312}],"CARTESIAN"]"
|
| temporal | 2002-06-26/2002-06-26 |
| theme |
[
"Earth Science"
]
|
| title | NASMo-TiAM 250m 16-day North America Surface Soil Moisture Dataset |
