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The default accuracy is specific for each parameter and in general not identical to those for fields archive in in MARS. The accuracy of fields in a grib file can be found using the ecCode ecCodes command:

grib_ls -P bitsPerValue <grib_file>

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ValueComment
off

same as av, default

avuse the accuracy of the archived field
nthe number of bits per value in the target field


Examples

ParameterMARS bit per valueDissemination bit per value
CI168

To get the archived accuracy for ci in dissemination:

disseminate,
type = fc,
stream = oper,
levtype = sfc,
param = ci,
time = 0000,
step = 3,
accuracy=av


Excerpt Include
Keywords in MARS and Dissemination requests
Keywords in MARS and Dissemination requests
nopaneltrue