[ncl-talk] Question re: Regridding geographic subsets using ESMF_regrid

[Jacob Klee (VirginiaPower - 1)]

Hello,

I am diving back into NCL after about a decade away, and have a few questions about regridding.  I have gathered a few parameters (Z500hPa, MSLP, and SST) from numerous reanalysis datasets, having already geographically subset all to (as close as possible) 85N, -180E, -10N, 180E.  I intend to regrid them all to the NCEP R1 2.5x2.5deg grid.

Question 1) I assume that I will want to set option “SrcRegional” to True?
Question 2) Should I contract the destination grid to 82.5N, -180E, -7.5N, 180E as some of the rectilinear datasets will have 85N & -10N as their northern and southernmost data (JRA-55 for ex), or does the script handle that for the user with the option “SrcRegional” set to true?
Question 3) Any recommendation on which interpolation method(s) would best suite each of the three data types?

-- Jacob Klee


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