CDO

Hello,

I have at my disposal a dataset which z-axis is on pressure levels(18). I need to interpolate this back on the model levels(62, hybrid).

I have tried to use cdo's intlevel3d,icoordinate ifile1 ifile2 ofile,
with:
- icoordinate = a single variable file defined on the pressure levels.
- ifile1 = the file containing the variables I want to interpolate. (also on pressure levels).
- ifile2 = a single variable file defined on the model levels (target shape).

doing so, I get the following message:
-----
cdo intlevel3d (Warning): Non monotonic zaxis!

cdo intlevel3d (Abort): Level 2.82305e-316 at index 1958400 not found!
-----

so does cdo intlevel3d allows to change the type of z-coordinate while interpolating (pressure to hybrid)?
if yes, do I enter the correct information in the command?
if no, does anyone know of a tools that permit this kind of transformation?

thanks in advance,
Best regards,
Olivier.