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lesserwhirls merged 1 commit into from
Sep 11, 2026
Merged

Update GRIB docs to account for areosol information #1597

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8 changes: 5 additions & 3 deletions docs/src/site/pages/netcdfJava/GribFilesCdm.md
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Expand Up @@ -203,21 +203,22 @@ where:

The GRIB-2 variable name is:

`%paramName[_error][_%level][_layer][_%interval][_%statName][_%ensDerivedType][_probability_%probName]`
`%paramName[_error][_%level][_layer][_%interval][_%statName][_%ensDerivedType][_probability_%probName][_%aerosolType]`

where:
* `%paramName` = parameter name from GRIB-2 table 4.2 (cleaned up).
If unknown, use `VAR_%d-%d-%d_FROM%d-%d` = `VAR_discipline-category-paramNo_FROM_center-subcenter`
* `%level` = short form of level name from GRIB-2 table 4.5, if defined.
* `_layer` = added if its a vertical layer (literal)
* `_layer` = added if it's a vertical layer (literal)
* `%timeInterval` = time interval name (eg \"12_hour\" or \"mixed\")
* `%statName` = name of statistical type if applicable, from GRIB-2 table 4.10
* `%ensDerivedType` = name of ensemble derived type if applicable, from GRIB-2 table 4.7
* `%probName` = name of probability type if applicable
* `%aerosolType` = type of aerosol if applicable (e.g. \"Particulate_organic_matter_dry_lt_2p5um\")

The GRIB-2 variable id is:

`VAR_%d-%d-%d[_error][_L%d][_layer][_I%s_S%d][_D%d][_Prob_%s]`
`VAR_%d-%d-%d[_error][_L%d][_layer][_I%s_S%d][_D%d][_Prob_%s][_A%d_%s]`

where:
* `VAR_%d-%d-%d` = `discipline-category-paramNo`
Expand All @@ -226,6 +227,7 @@ where:
* `S%d` = statistical type code if applicable
* `D%d` = derived type code if applicable
* `Prob_%s` = probability name if applicable
* `A%d_%s` = aerosol type if applicable

See `ucar.nc2.grib.grib1.Grib1Rectilyser.cdmVariableHash()` and `ucar.nc2.grib.grib2.Grib2Rectilyser.cdmVariableHash()` for complete details.

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