metno / snap

Severe Nuclear Accident Programme
GNU General Public License v3.0
23 stars 6 forks source link

Grib bitmap #84

Closed heikoklein closed 2 years ago

heikoklein commented 2 years ago

Use 0 as fill-value before converting to grib. fimex-grib-translation will use the fill-value as bitmap mask and only write data not corresponding to that bitmap. Data-reduction for a typical 68h run, 7 components: 4x 388MB -> 4x 15MB (> factor 20).

Currently, bitmap packing is the only grib-compression algorithm supported by argos.