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From December 2014 onward, this dataset provides Level 1B radiance measurements from the Cross-track Infrared Sounder (CrIS) instrument aboard the Suomi NPP satellite. Each six-minute data granule contains 1,317 spectral channels across shortwave, midwave, and longwave infrared bands, organized into a grid of 30 by 45 fields-of-regard. The data are designed for use with the Advanced Technology Microwave Sounder (ATMS) to support atmospheric profiling and weather forecasting.
Data prior to November 2, 2015, is only available in Normal Spectral Resolution (NSR); after that date, both NSR and Full Spectral Resolution (FSR) are available. Users are directed to check version history for product updates.