CDO

Hello,
I have two netcdf files both belonging to same time, different pressure levels of geopotential height data.
The four dimensions are time. level, lat.lon and I have five variables. I need to merge them into one file.

cdo mergetime a.nc b.nc does not work.

This is the output of one
time⁰=1879032 level⁰=1000 lat⁰=60 lon⁰=50 hgt⁰=53 m
time⁰=1879032 level⁰=1000 lat⁰=60 lon¹=52.5 hgt¹=55 m
time⁰=1879032 level⁰=1000 lat⁰=60 lon²=55 hgt²=62 m
time⁰=1879032 level⁰=1000 lat⁰=60 lon³=57.5 hgt³=72 m
time⁰=1879032 level⁰=1000 lat⁰=60 lon⁴=60 hgt⁴=84 m

and this is the output of other

time⁰=1879032 level⁰=500 lat⁰=60 lon⁰=50 hgt⁰=5608 m
time⁰=1879032 level⁰=500 lat⁰=60 lon¹=52.5 hgt¹=5634 m
time⁰=1879032 level⁰=500 lat⁰=60 lon²=55 hgt²=5659 m
time⁰=1879032 level⁰=500 lat⁰=60 lon³=57.5 hgt³=5678 m
time⁰=1879032 level⁰=500 lat⁰=60 lon⁴=60 hgt⁴=5691 m
Regards,
Ashwin.