[Paraview] viewing data files with different scales (apologies if this is posted twice)

[Jeff Becker]

Hi. I'd like to use Paraview 4.2 to overlay a dataset of air species 
concentration data (range 0 - 1e-16) over a map of earth elevation data 
(range -7700 to 7700). Is there a way to view both, e.g., with different 
colormaps and scales? Thanks.

-jeff