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How to delete extra variable in CDO

Added by Kaleigh Ross over 2 years ago

I have a ERA5 Netcdf file. If I open the file in Panoply, there's an extra variable "expver" which I want to get rid of. This variable seems to act like its z-axis. Expver has two values, 1 and 5. I want to get rid of 5 because it just contains blank data. Please help me delete this extra level. Thank you.

File format : NetCDF2
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter ID
     1 : unknown  unknown  v instant       2   1     48441   1  I16  : -1            
   Grid coordinates :
     1 : lonlat                   : points=48441 (241x201)
                        longitude : 90 to 150 by 0.25 degrees_east
                         latitude : 50 to 0 by -0.25 degrees_north
   Vertical coordinates :
     1 : generic                  : levels=2
                           expver : 1 to 5 
   Time coordinate :  31486 steps
     RefTime =  1900-01-01 00:00:00  Units = hours  Calendar = gregorian

Replies (2)

RE: How to delete extra variable in CDO - Added by Karin Meier-Fleischer over 2 years ago

Hi Kaleigh,

try selecting the z-axis level by value

cdo -sellevel,1 infile outfile

or use the z-axis level id

cdo -sellevidx,1 infile outfile

-Karin

RE: How to delete extra variable in CDO - Added by Kaleigh Ross over 2 years ago

Worked like magic! Thank you soooo much, Karin :)

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