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AEC is an implementation of CCSDS compression using libaec.

CCSDS stands for Consultative Committee for Space Data Systems and is a WMO standard for lossless data compression (Data representation template 5.42)

Note: This is only available in GRIB edition 2

To encode with this packing type:

% grib_set -r -s packingType=grid_ccsds in.grib2 out.grib2

Assuming that the file in.grib2 contains only grid-point data (not spectral).

This is relatively fast with a good compression ratio.

When building ecCodes, make sure you install libaec and enable this option via the cmake option -DENABLE_AEC=ON.

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