"Conventions" cube_a attribute value "CF-1.5" is not compatible with cube_b attribute value "CF-1.6"
cube_a name "relative_humidity" is not compatible with cube_b name "air_potential_temperature"
cube_a units "m" are not compatible with cube_b units "K"
Cell methods
()
and
(CellMethod(method='mean', coord_names=('model_level_number',), intervals=(), comments=()),)
are not compatible
