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DMSP SSM/I Pathfinder Daily EASE-Grid Brightness Temperatures


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    The NOAA/NASA Pathfinder Program Special Sensor Microwave/Imager (SSM/I) Level 3 Equal Area Scalable Earth-Grid (EASE-Grid) Brightness Temperatures consist of gridded data in one of three projections: Northern Hemisphere, Southern Hemisphere and full global. The data gridding technique maximizes the radiometric integrity of the original brightness temperature values, maintains high spatial and temporal precision, and involves no averaging of original swath data.

    Coverage is global and begins 1 August 1987; processing is ongoing (please review temporal coverage for current availability). Resolution is 25 km for all channels and 12.5 km for the 85 GHz channels. There are 18 brightness temperature files per day for a given projection, and two corresponding time files. Data are contained in flat binary files, either one grid per file consisting of 2-byte integer arrays of brightness temperatures in tenths of Kelvins, or in the case of time files, 1-byte integer arrays consisting of Coordinated Universal Time (UTC) in tenths of hours.

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