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Snow water equivalent data provides a global daily measurement of water stored in snowpack, derived from passive microwave observations by the AMSR2 instrument on the GCOM-W1 satellite. The near real-time product is processed by NASA's LANCE system within 3 hours of observation and mapped to 25 km Equal-Area Scalable Earth Grids for both hemispheres. This dataset supports monitoring of the global water and energy cycle, with a science-quality version available for long-term analysis.
Data is provided in HDF-EOS5 format, which requires specific libraries for processing. Users are advised to use the science-quality product if low latency is not a primary concern, as it uses the best available calibration and ancillary data.