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Description

This Level-2 (L2) soil moisture product provides estimates of land surface conditions retrieved by both the Soil Moisture Active Passive (SMAP) radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes and the Sentinel-1A and -1B radar. SMAP L-band brightness temperatures and Copernicus Sentinel-1 C-band backscatter coefficients are used to derive soil moisture data, which are then resampled to an Earth-fixed, cylindrical 3 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0).

Note: These data are Beta-release quality, meaning that they have not undergone full validation and may still contain significant errors.

Version Description

First public data release (Beta)

Product Summary

Platforms
Sentinel-1A ,
Sentinel-1B ,
SMAP Observatory
Instruments
SAR ,
C-SAR ,
SMAP L-BAND RADIOMETER
Spatial Extent

N: 60 S: -60 E: 180 W: -180

Spatial Resolution
3 Kilometers x 3 Kilometers
Location
OCEANIA ,
AFRICA ,
ASIA ,
EUROPE ,
NORTH AMERICA ,
SOUTH AMERICA
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2015-04-01 to 2018-06-03
Temporal Resolution
30 Second
Concept ID
C2812932824-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
Processing Level
2
Published
Updated
Science Keywords
Soil Moisture/Water Content

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

Das, N., Entekhabi, D., Kim, S., Yueh, S., Dunbar, R., & Colliander, A. (2017). SMAP/Sentinel-1 L2 Radiometer/Radar 30-Second Scene 3 km EASE-Grid Soil Moisture, Version 1 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/9UWR1WTHW1WN Date Accessed: 2026-06-16

Documents

Publications Citing This Dataset

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Title Year Author Topic
Reviews and syntheses: Recent advances in microwave remote sensing in support of terrestrial carbon cycle science in Arcticboreal regions Mavrovic, Alex, Sonnentag, Oliver, Lemmetyinen, Juha, Baltzer, Jennifer L., Kinnard, Christophe, Roy, Alexandre Soil Moisture/Water Content
Light pollution affects West Nile virus exposure risk across Florida Kernbach, Meredith E., Martin, Lynn B., Unnasch, Thomas R., Hall, Richard J., Jiang, Rays H. Y., Francis, Clinton D. Soil Moisture/Water Content
Caracterizacion de dinamicas hidrogeologicas en zonas de explotacion minera de litio a partir del uso de productos satelitales Seppi, Santiago, German, Alba, Beltramone, Giuliana, Melin, Almendra Brasca, Scavuzzo, Carlos Marcelo, Ferral, Anabella Soil Moisture/Water Content
A machine learning approach for mapping the very shallow theoretical geothermal potential Assouline, Dan, Mohajeri, Nahid, Gudmundsson, Agust, Scartezzini, Jean-Louis Soil Moisture/Water Content
Linking Remote Sensing and Geodiversity and Their Traits Relevant to Lausch, Angela, Baade, Jussi, Bannehr, Lutz, Borg, Erik, Bumberger, Jan, Chabrilliat, Sabine, Dietrich, Peter, Gerighausen, Heike, Glasser, Cornelia, Hacker, Jorg, Haase, Dagmar, Jagdhuber, Thomas, Jany, Sven, Jung, Andras, Karnieli, Arnon, Kraemer, Roland, Makki, Mohsen, Mielke, Christian, Moller, Markus, Mollenhauer, Hannes, Montzka, Carsten, Pause, Marion, Rogass, Christian, Rozenstein, Offer, Schmullius, Christiane, Schrodt, Franziska, Schron, Martin, Schulz, Karsten, Schutze, Claudia, Schweitzer, Christian, Selsam, Peter, Skidmore, Andrew, Spengler, Daniel, Thiel, Christian, Truckenbrodt, Sina, Vohland, Michael, Wagner, Robert, Weber, Ute, Werban, Ulrike, Wollschlager, Ute, Zacharias, Steffen, Schaepman, Michael Soil Depth, Soil Horizons/Profile, Soil Water Holding Capacity, Soil Texture, Soil Classification, Soil Moisture/Water Content
Estimation of active-passive microwave covariation using SMAP and Sentinel-1 data Jagdhuber, Thomas, Baur, Martin, Akbar, Ruzbeh, Das, Narendra N., Link, Moritz, He, Lian, Entekhabi, Dara Brightness Temperature, SIGMA NAUGHT, Soil Moisture/Water Content
Regional evapotranspiration estimates using the relative soil moisture ratio derived from SMAP products Walker, Elisabet, Garcia, Gabriel A., Venturini, Virginia, Carrasco, Aylen Soil Moisture/Water Content
The SMAP and Copernicus Sentinel 1A/B Microwave Active-Passive High Resolution Surface Soil Moisture Product and its Applications Das, Narendra N., Entekhabi, Dara, Dunbar, R. Scott, Chaubell, Mario J., Colliander, Andreas, Yueh, Simon, Jagdhuber, Thomas, Chen, Fan, Crow, Wade, O'Neill, Peggy E., Walker, Jeffrey P., Berg, Aaron, Bosch, David D., Caldwell, Todd, Cosh, Michael H., Collins, Chandra H., Lopez-Baeza, Ernesto, Thibeault, Marc Soil Moisture/Water Content
High resolution soil moisture product based on Smap active-passive approach using Copernicus sentinel 1 data Das, Narendra N., Entekhabi, Dara, Kim, Seungbum, Jagdhuber, Thomas, Dunbar, Scott, Yuehl, Simon, Oneill, P. E., Colliander, Andreas, Walker, Jeffery, Jackson, Thomas J. Soil Moisture/Water Content
High-resolution enhanced product based on smap active-passive approach using sentinel 1A and 1B SAR data Das, N. N., Entekhabi, D., Kim, S., Jagdhuber, T., Dunbar, S., Yueh, S., ONeill, P. E., Colliander, A., Walker, J., Jackson, T. J. Soil Moisture/Water Content
Physics-based modeling of active-passive microwave covariations for geophysical retrievals Jagdhuber, T, Entekhabi, D., Das, NN., Link, M., Baur, M., Akbar, R., Montzka, C., Kim, S., Yueh, S., Baris, I. Soil Moisture/Water Content
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