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Soil moisture data is derived from the AMSR2 instrument aboard the GCOM-W1 satellite, providing daily global measurements on a 25 km EASE-Grid. The dataset is generated in near real-time within 3 hours of observation by NASA's LANCE system using two retrieval algorithms (NPD and SCA). It serves as a beta product for applications requiring low latency, with higher-quality science products available separately.
This is a beta near real-time product. For applications where data latency is not critical, NASA recommends using the standard science quality products available at the NSIDC DAAC, which are created with the best available ancillary and calibration information.