[RegCNET] interpolation script

[Jonathan Winter]

I'm in the process of comparing some of my model output to
observations/reanalysis data and I'd like to use some NCEP/NCAR data. 
Unfortunately, it uses a messy T62 Gaussian grid with 192x94 points
(88.542N-88.542S, 0E-358.125E).  I have a script that interpolates any
regular grid to the RegCM grid, but in this dataset the resolution of
the lat. varies, ie., the spacing between the first two points is 1.878,
and the spacing between the 2nd and 3rd points is 1.898.    

To interpolate this data down to my RegCM grid, I'm going to need a
script.  If anyone has written such a script, has tackled this problem
in the past, or has ideas, it would be a tremendous help.

thanks,

jonathan