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The archived accuracy is specific for each parameter and in general not identical to the default accuracies used in dissemination. 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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Fields resulting from a MARS compute request are by default coded with 24 bits per value. To set the accuracy of the result field to that of the first field used in the formula, accuracy=av can be specified.
Examples:
Dissemination
Specifies the number of bits per value used in the target GRIB messages.
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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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Value | Comment |
---|---|
off | same as av, default |
av | use the accuracy of the archived field |
n | the number of bits per value in the target field |
Examples
Parameter | MARS bit per value | Dissemination bit per value |
---|---|---|
CI | 16 | 8 |
To get the archived accuracy for ci in dissemination: disseminate, |
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