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NRT AMSR2 Unified L3 Global Daily 25 km EASE-Grid Snow Water Equivalent V1


NOTE: We have identified a potential irregularity in the AMSR-U2 Snow Water Equivalent data set. The irregularity is manifest in what appears to be an artificial SWE boundary extending across North America. The SWE boundary is more uniform then one would expect for northern hemisphere snow cover and caution is recommended when using this data set at this time. We are actively investigating the issue. Users are advised to use alternative SWE products until further notice. The Advanced Microwave Scanning Radiometer 2 (AMSR2) instrument on the Global Change Observation Mission - Water 1 (GCOM-W1) provides global passive microwave measurements of terrestrial, oceanic, and atmospheric parameters for the investigation of global water and energy cycles. Near real-time (NRT) products are generated within 3 hours of the last observations in the file, by the Land Atmosphere Near real-time Capability for EOS (LANCE) at the AMSR Science Investigator-led Processing System (AMSR SIPS), which is collocated with the Global Hydrology Resource Center (GHRC) DAAC. The NRT AMSR2 Unified L3 Global Daily Snow Water Equivalent data set contains snow water equivalent (SWE) data and quality assurance flags mapped to Northern and Southern Hemisphere 25 km Equal-Area Scalable Earth Grids (EASE-Grids). Data are stored in HDF-EOS5 format and are available via HTTP from the EOSDIS LANCE system at If data latency is not a primary concern, please consider using science quality products. Science products are created using the best available ancillary, calibration and ephemeris information. Science quality products are an internally consistent, well-calibrated record of the Earth's geophysical properties to support science.

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