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Hourly estimates of Downward Longwave Irradiance (DLI) reaching the Earth's surface, derived from the Meteosat geostationary satellite's SEVIRI instrument. The data is produced by EUMETSAT using a bulk parameterization algorithm that combines clear-sky DLI from NWP models with satellite-derived cloud corrections. Products are interpolated to rounded Universal Time hours and remapped onto a 0.05-degree regular grid.
Data values represent irradiance interpolated to hourly UTC timestamps, not the original variable satellite pixel observation times. Users must be aware of the 12-minute temporal variation in the raw observations.