dataType attribute missing when applying aexpr
Added by Guido Cioni about 2 months ago
I'm trying to compute geopotential height from geopotential and add the variable to the same grib file.
For some reason this is changing the dataType of every other variable in the resulting file.
Before conversion
era5_accf_pressure_20250909_0000.grb2
edition centre date dataType gridType stepRange typeOfLevel level shortName packingType
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 1000 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 1000 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 1000 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 1000 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 1000 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 1000 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 1000 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 900 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 900 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 900 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 900 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 900 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 900 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 900 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 800 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 800 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 800 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 800 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 800 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 800 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 800 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 700 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 700 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 700 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 700 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 700 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 700 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 700 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 600 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 600 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 600 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 600 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 600 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 600 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 600 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 500 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 500 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 500 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 500 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 500 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 500 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 500 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 400 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 400 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 400 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 400 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 400 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 400 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 400 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 300 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 300 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 300 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 300 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 300 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 300 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 300 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 200 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 200 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 200 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 200 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 200 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 200 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 200 w grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 100 q grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 100 t grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 100 pv grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 100 z grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 100 u grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 100 v grid_simple
2 ecmf 20250909 an regular_ll 0 isobaricInhPa 100 w grid_simple
70 of 70 messages in era5_accf_pressure_20250909_0000.grb2
Then I do cdo aexpr,gh=z/9.80665 era5_accf_pressure_20250909_0000.grb2 era5_accf_20250909_0000.grb2 and as result
era5_accf_20250909_0000.grb2
edition centre date dataType gridType stepRange typeOfLevel level shortName packingType
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 1000 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 900 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 800 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 700 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 600 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 500 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 400 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 300 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 200 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 100 q grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 1000 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 900 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 800 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 700 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 600 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 500 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 400 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 300 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 200 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 100 t grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 1000 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 900 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 800 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 700 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 600 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 500 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 400 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 300 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 200 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 100 pv grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 1000 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 900 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 800 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 700 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 600 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 500 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 400 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 300 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 200 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 100 z grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 1000 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 900 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 800 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 700 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 600 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 500 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 400 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 300 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 200 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 100 u grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 1000 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 900 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 800 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 700 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 600 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 500 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 400 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 300 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 200 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 100 v grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 1000 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 900 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 800 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 700 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 600 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 500 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 400 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 300 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 200 w grid_simple
2 ecmf 20250909 missing regular_ll 0 isobaricInhPa 100 w grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 1000 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 900 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 800 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 700 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 600 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 500 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 400 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 300 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 200 gh grid_simple
2 ecmf 20250909 af regular_ll 0 isobaricInhPa 100 gh grid_simple
80 of 80 messages in era5_accf_20250909_0000.grb2
I think CDO is trying to determine the metadata of the new variable and somehow cannot figure that out.
Replies (2)
RE: dataType attribute missing when applying aexpr - Added by Uwe Schulzweida about 2 months ago
If you use ecCodes for this GRIB1 data, the metadata for the other variables should improve:
cdo --eccodes aexpr,gh=z/9.80665 infile outfile
RE: dataType attribute missing when applying aexpr - Added by Guido Cioni about 2 months ago
THanks Uwe, for some reason cdo was using the wrong grib tables and I suspect that was the issue because now, even without the --eccodes option, I get no missing dataType