Overview

The FY-2C and later satellites provide one visible image channel and four IR channels. The visible channel is at 1.25 km resolution; the IR channels have a resolution of 5 km and provide split window, short wave IR and water vapor images. The SDI ingestor acquires this data and produces two McIDAS areas per ingest, a visible area and a 4-channel IR area. The navigation and calibration for these areas are taken from the signal telemetry in accordance with China Meteorological Administration (CMA) documentation.

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