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Description

This Level-2B AMSR Unified product contains surface soil moisture at 25 km resolution, estimated from AMSR-E and AMSR2 brightness temperature observations using two different approaches: the Normalized Polarization Difference (NPD) algorithm and the Single Channel Algorithm (SCA). Data are provided in the NSIDC EASE-Grid Global projection.

Soil moisture estimates are derived from AMSR-E and AMSR2 data which have been spatially resampled by the Japan Aerospace Exploration Agency (JAXA) to intercalibrate, or “unify,” the two sensors.

Version Description

Initial release

Product Summary

Platforms
Aqua ,
GCOM-W1
Instruments
AMSR-E ,
AMSR2
Spatial Extent

N: 89.24 S: -89.24 E: 180 W: -180

Spatial Resolution
25 Kilometers x 25 Kilometers
Spatial Reference System(s)
NSIDC EASE-Grid Global (EPSG:3410)
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
ORBIT
Temporal Extent
2002-06-01 to 2011-10-04 ,
2012-07-02 to Present
Concept ID
C3243533185-NSIDC_CPRD
Data State
ACTIVE
Number of Files/Granules
237848
Processing Level
2B
Published
Science Keywords
Brightness Temperature ,
Soil Moisture/Water Content ,
Vegetation 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

Jackson, T., Chan, S., Bindlish, R., & Njoku, E. (2018). AMSR-E/AMSR2 Unified L2B Half-Orbit 25 km EASE-Grid Surface Soil Moisture, Version 1 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/IKQ0G7ODMLC7 Date Accessed: 2026-02-17

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