CDO

Hello,

I'm trying to regrid a file and get the following error:

@cdo remapcons,t106grid -selname,g500 g500_19810501.nc tmp.nc
cdo remapcons: Started child process "selname,g500 g500_19810501.nc (pipe1.1)".

cdo(2) selname (Warning): Variable name g500 not found!

cdo(2) selname (Abort): No variables selected!@

Indeed, when I do a cdo showvar g500_19810501.nc, the only variable that appears is realization, whereas ncdump -h g500_19810501.nc shows that g500 is present in my file:

netcdf g500_19810501 {
dimensions:
time = UNLIMITED ; // (4 currently)
time_bnd = 2 ;
longitude = 320 ;
latitude = 160 ;
lev = 1 ;
ensemble = 10 ;
string80 = 80 ;
variables:
int level ;
level:standard_name = "air_pressure" ;
level:long_name = "air pressure" ;
level:data_type = "float" ;
level:units = "Pa" ;
level:axis = "Z" ;
level:positive = "up" ;
int leadtime(time) ;
leadtime:bounds = "time_bnd" ;
leadtime:calendar = "proleptic_gregorian" ;
leadtime:long_name = "time elapsed since the start of the forecast" ;
leadtime:standard_name = "forecast_period" ;
leadtime:units = "hours" ;
int reftime(time) ;
reftime:calendar = "proleptic_gregorian" ;
reftime:long_name = "forecast reference time" ;
reftime:standard_name = "time" ;
reftime:units = "days since 1950-01-01 00:00:00" ;
int time_bnd(time, time_bnd) ;
time_bnd:units = "hours" ;
double longitude(longitude) ;
longitude:standard_name = "longitude" ;
longitude:long_name = "longitude" ;
longitude:units = "degrees_east" ;
longitude:axis = "X" ;
double latitude(latitude) ;
latitude:standard_name = "latitude" ;
latitude:long_name = "latitude" ;
latitude:units = "degrees_north" ;
latitude:axis = "Y" ;
double lev(lev) ;
lev:standard_name = "air_pressure" ;
lev:long_name = "pressure" ;
lev:units = "Pa" ;
lev:positive = "down" ;
lev:axis = "Z" ;
float g500(time, ensemble, lev, latitude, longitude) ;
g500:grid_type = "gaussian" ;
g500:standard_name = "geopotential" ;
g500:long_name = "geopotential" ;
g500:data_type = "float" ;
g500:units = "m2 s-2" ;
g500:unit_long = "square_meter_per_square_second" ;
g500:cell_methods = "leadtime: mean (interval 12h)" ;
g500:coordinates = "longitude latitude reftime leadtime time_bnd experiment_id source realization institution level" ;
g500:_FillValue = 1.e+12f ;

It seems to be the case for all my 3D files.
Do you know what could be the reason for that and what can be done?

I'm using cdo v1.6.3.

Thank you very much for your help,
Best regards,

Pierre-Antoine Bretonnière