Skip to main content

Description

SMAP radiometer and radar soil moisture data products are matched with in situ-based soil moisture estimates from core validation sites to produce this data set. These data provide performance assessments of various SMAP soil moisture products.

Version Description

Initial release

Product Summary

Platforms
GROUND STATIONS ,
SMAP
Instruments
SOIL MOISTURE PROBE ,
SOIL TEMPERATURE PROBE ,
SMAP L-BAND RADAR ,
SMAP L-BAND RADIOMETER
Projects
SMAP VAL
Spatial Extent

N: 85.044 S: -85.044 E: 180 W: -180

Spatial Reference System(s)
WGS 84 (EPSG:4326)
Location
ARGENTINA ,
ARGENTINA ,
ARIZONA ,
AUSTRALIA ,
AUSTRALIA ,
AUSTRIA ,
BENIN ,
CALIFORNIA ,
CANADA ,
CANADA ,
CANADA ,
DENMARK ,
FINLAND ,
FINLAND ,
GEORGIA ,
GERMANY ,
HIMALAYAS ,
HIMALAYAS ,
HIMALAYAS ,
IDAHO ,
INDIANA ,
IOWA ,
ITALY ,
KENYA ,
KUWAIT ,
MEXICO ,
MONGOLIA ,
NETHERLANDS ,
NEW YORK ,
NIGER ,
OKLAHOMA ,
OKLAHOMA ,
SPAIN ,
SPAIN ,
TEXAS
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-04-01 to 2021-03-31
Concept ID
C3280716882-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
167
Processing Level
NA
Published
Science Keywords
Soil Moisture/Water Content ,
Soil Temperature

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Colliander, A., Al Jassar, H., Asanuma, J., Berg, A., Bongiovanni, T., Bosch, D., Caldwell, T., Caylor, K., Cosh, M., Dorigo, W., Holifield -Collins, C., Jensen, K., Livingston, S., Lopez-Baeza, E., Martinez-Fernandez, J., McNairn, H., Moghaddam, M., Montzka, C., Moore, K., … Zribi, M. (2017). SMAP/In Situ Core Validation Site Land Surface Parameters Match-Up Data, Version 1 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/DXAVIXLY18KM Date Accessed: 2026-09-18

Documents

No Results

QUESTIONS & SUPPORT

Have a question?

Get help with NASA Earth science data, datasets, tools, services, and metadata on the Earthdata Forum. Experienced staff in the data user community review and answer questions.

Get help on Earthdata Forum
Earthdata
Forum

Publications Citing This Dataset

Filters
Title Year Author Topic
Dynamic vegetation parameter retrieval algorithm for SMAP L-band radiometer observations Konkathi, Preethi, Karthikeyan, L. Soil Moisture/Water Content, Soil Temperature
A Theory of Maximum Entropy Production and Its Application to Microwave Wang, J., Cho, K., NegronJuarez, R. I., Colliander, A., Caravasi, E. C., Revilla, N. S. Reflectance, Soil Moisture/Water Content, Soil Temperature, Precipitation, Precipitation Amount, Precipitation Rate, Snow, Rain, Brightness Temperature, Surface Soil Moisture
Inverse Dynamic Parameter Identification for Remote Sensing of Soil Moisture From SMAP Satellite Observations Zhang, Runze, Watts, Adam C., Alipour, Mohamad Soil Moisture/Water Content, Soil Temperature
Spatially Interpolated CYGNSS Data Improve Downscaled 3 km SMAP/CYGNSS Wernicke, Liza J., Chew, Clara C., Small, Eric E. Reflectance, Brightness Temperature, SIGMA NAUGHT, Surface Soil Moisture, Radar Cross-Section, Radar Reflectivity, Flight Data Logs, Soil Moisture/Water Content, Soil Temperature
A Deep Learning Data Fusion Model using Sentinel-1/2, SoilGrids, SMAP-USDA, and GLDAS for Soil Moisture Retrieval Batchu, Vishal, Nearing, Grey, Gulshan, Varun Terrain Elevation, RADAR IMAGERY, Topographical Relief Maps, Soil Moisture/Water Content, Soil Temperature
A WeaklyCoupled Land Surface Analysis With SMAP Radiance Assimilation Improves GEOS MediumRange Forecasts of NearSurface Air Temperature and ... Reichle, Rolf H., Zhang, Sara Q., Kolassa, Jana, Liu, Qing, Todling, Ricardo Soil Moisture/Water Content, Soil Temperature, Brightness Temperature
IMERG Precipitation Improves the SMAP Level-4 Soil Moisture Product Reichle, Rolf H., Liu, Qing, Ardizzone, Joseph V., Crow, Wade T., De Lannoy, Gabrielle J. M., Kimball, John S., Koster, Randal D. Surface Soil Moisture, Soil Moisture/Water Content, Soil Temperature, Precipitation, Precipitation Amount, Precipitation Rate, Snow, Rain, Brightness Temperature
Impact of design factors for ESA CCI satellite soil moisture data assimilation over Europe Heyvaert, Zdenko, Scherrer, Samuel, Bechtold, Michel, Gruber, Alexander, Dorigo, Wouter, Kumar, Sujay, De Lannoy, Gabrielle Soil Moisture/Water Content, Soil Temperature
Impact of SAR-based vegetation attributes on the SMAP high-resolution soil moisture product Singh, Gurjeet, Das, Narendra N., Colliander, Andreas, Entekhabi, Dara, Yueh, Simon H. Soil Moisture/Water Content, Soil Temperature, Brightness Temperature, Surface Soil Moisture
The first polarimetric GNSS-Reflectometer instrument in space improves the SMAP mission's sensitivity over densely vegetated areas Rodriguez-Alvarez, Nereida, Munoz-Martin, Joan Francesc, Bosch-Lluis, Xavier, Oudrhiri, Kamal, Entekhabi, Dara, Colliander, Andreas Soil Moisture/Water Content, Soil Temperature, Brightness Temperature, Surface Soil Moisture
Using Robust Regression to Retrieve Soil Moisture from CyGNSS Data Liu, Qi, Zhang, Shuangcheng, Li, Weiqiang, Nan, Yang, Peng, Jilun, Ma, Zhongmin, Zhou, Xin Brightness Temperature, SIGMA NAUGHT, Soil Moisture/Water Content, Soil Temperature
Assessment of ERA5-Land Volumetric Soil Water Layer Product Using In Situ and SMAP Soil Moisture Observations Lal, Preet, Singh, Gurjeet, Das, Narendra N., Colliander, Andreas, Entekhabi, Dara Soil Moisture/Water Content, Soil Temperature, Brightness Temperature, Surface Soil Moisture
Improved soil moisture estimationSynergistic use of satellite observations and land surface models over CONUS based on machine learning Lee, Jaese, Park, Sumin, Im, Jungho, Yoo, Cheolhee, Seo, Eunkyo Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Emissivity, Land Surface Temperature, Soil Moisture/Water Content, Soil Temperature
Assimilation of SMAP brightness temperature observations in the GEOS landatmosphere data assimilation system Reichle, Rolf H., Zhang, Sara Q., Liu, Qing, Draper, Clara S., Kolassa, Jana, Todling, Ricardo Soil Moisture/Water Content, Soil Temperature, Brightness Temperature
The contributions of gauge-based precipitation and SMAP brightness temperature observations to the skill of the SMAP Level-4 soil moisture product Reichle, Rolf H., Liu, Qing, Ardizzone, Joseph V., Crow, Wade T., De Lannoy, Gabrielle J. M., Dong, Jianzhi, Kimball, John S., Koster, Randal D. Soil Temperature, Soil Moisture/Water Content, Surface Soil Moisture, Brightness Temperature
An intercomparison study of algorithms for downscaling smap radiometer soil moisture retrievals Fang, Li, Zhan, Xiwu, Yin, Jifu, Liu, Jicheng, Schull, Mitchell, Walker, Jeffrey P., Wen, Jun, Cosh, Michael H., Lakhankar, Tarendra, Collins, Chandra Holifield, Bosch, David D., Starks, Patrick J. Soil Moisture/Water Content, Soil Temperature, Brightness Temperature
Assessing the impact of soil layer depth specification on the observability of modeled soil moisture and brightness temperature Shellito, Peter J., Kumar, Sujay V., Santanello, Joseph A., Lawston-Parker, Patricia, Bolten, John D., Cosh, Michael H., Bosch, David D., Holifield Collins, Chandra D., Livingston, Stan, Prueger, John, Seyfried, Mark, Starks, Patrick J. Soil Moisture/Water Content, Soil Temperature
Version 4 of the SMAP Level-4 Soil Moisture Algorithm and Data Product Reichle, Rolf H., Liu, Qing, Koster, Randal D., Crow, Wade T., De Lannoy, Gabrielle J. M., Kimball, John S., Ardizzone, Joseph V., Bosch, David, Colliander, Andreas, Cosh, Michael, Kolassa, Jana, Mahanama, Sarith P., Prueger, John, Starks, Patrick, Walker, Jeffrey P. Soil Temperature, Soil Moisture/Water Content, Surface Soil Moisture, Root Zone Soil Moisture, Brightness Temperature
An initial assessment of a SMAP soil moisture disaggregation scheme using TIR surface evaporation data over the continental United States Mishra, Vikalp, Ellenburg, W. Lee, Griffin, Robert E., Mecikalski, John R., Cruise, James F., Hain, Christopher R., Anderson, Martha C. Soil Moisture/Water Content, Soil Temperature
Characterization of higher-order scattering from vegetation with SMAP measurements Feldman, Andrew F., Akbar, Ruzbeh, Entekhabi, Dara Soil Moisture/Water Content, Soil Temperature, Brightness Temperature
Estimating time-dependent vegetation biases in the SMAP soil moisture product Zwieback, Simon, Colliander, Andreas, Cosh, Michael H., Martinez-Fernandez, Jose, McNairn, Heather, Starks, Patrick J., Thibeault, Marc, Berg, Aaron Longwave Radiation, Shortwave Radiation, Soil Heat Budget, Soil Heat Budget, Soil Temperature, Soil Temperature, Soil Infiltration, Soil Infiltration, Soil Moisture/Water Content, Surface Soil Moisture, Root Zone Soil Moisture, Soil Moisture/Water Content, Evaporation, Surface Water, Runoff Rate, Average Flow, Average Flow, Precipitation, Snow/Ice, Snow Depth, Snow Melt, Snow/Ice Temperature, Leaf Area Index (LAI), Leaf Area Index (LAI), Surface Pressure, Heat Flux, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Land Surface Temperature, Snow Water Equivalent, Runoff, Land Use/Land Cover Classification, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI)
Estimating Soil Evaporation Using Drying Rates Determined from Small, Eric E., Badger, Andrew M., Abolafia-Rosenzweig, Ronnie, Livneh, Ben Soil Moisture/Water Content, Soil Temperature, Surface Pressure, Longwave Radiation, Shortwave Radiation, Surface Temperature, Evaporation, Humidity, Convection, Surface Winds, Rain, Land Surface Temperature, Brightness Temperature
You're viewing 22 of 22