Interpolate NARR data to coarser grid

Good morning NCL Talk.

I am attempting to interpolate NARR precipitation data to a much coarser
grid. NARR data I have are of resolution 277 x 349 (y by x). These data
are on a curvilinear map grid. I would like approximately 2.8 x 2.8 degree
interpolated values. I have tried a few different things but am unsure
which route is best. First I converted NARR 2d lat/lon values to 1d arrays
using *ndtoooned*. I then tried a bilinear interpolation (*linint2*) route.
That code is attached. I thought about using the function
*area_hi2lores*but I do not believe that can be used with NARR data.
Any help and/or
suggestions are appreciated. Am I missing something in my code?

Thanks.

Zac

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