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: 2026-09-28

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 Authors Year Referenced Datasets
Dynamic vegetation parameter retrieval algorithm for SMAP L-band radiometer observations
  • Konkathi, Preethi, Karthikeyan, L.
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.
Spatially Interpolated CYGNSS Data Improve Downscaled 3 km SMAP/CYGNSS
  • Wernicke, Liza J., Chew, Clara C., Small, Eric E.
Inverse Dynamic Parameter Identification for Remote Sensing of Soil Moisture From SMAP Satellite Observations
  • Zhang, Runze, Watts, Adam C., Alipour, Mohamad
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
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
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
Using Robust Regression to Retrieve Soil Moisture from CyGNSS Data
  • Liu, Qi, Zhang, Shuangcheng, Li, Weiqiang, Nan, Yang, Peng, Jilun, Ma, Zhongmin, Zhou, Xin
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
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.
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.
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
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
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.
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
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.
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.
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.
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.
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
Characterization of higher-order scattering from vegetation with SMAP measurements
  • Feldman, Andrew F., Akbar, Ruzbeh, Entekhabi, Dara
Estimating Soil Evaporation Using Drying Rates Determined from
  • Small, Eric E., Badger, Andrew M., Abolafia-Rosenzweig, Ronnie, Livneh, Ben
You're viewing 22 of 22