[ncl-talk] using ncl/esmf to regrid non-standard WRFOUT files

[Kelly Mahoney - NOAA Federal]

Hello,

We are stuck with a problem trying to use existing ncl code (using esmf
regridding) for wrf output that is missing some critical information, and
I'm hoping someone might have advice on the best/quickest workaround:

The data in question are produced from an older version of WRF-NMM, and are
evidently missing coordinate attributes and perhaps also the vertical
coordinate. [Although - in the end we actually only need 2D/surface data so
perhaps the vertical coordinate issue won't be a show-stopper?]

A sample of the wrfout in question can be found here:
ftp://ftp.cdc.noaa.gov/pub/Public/kmahoney/NWM_PR/wrfout_d01_2019-03-15_18-00-00.nc

and the sample codes that we're ultimately trying to use are here:
ftp://ftp.cdc.noaa.gov/pub/Public/kmahoney/NWM_PR/HRRR2WRFHydro_generate_weights.ncl
(this is Step 1 to generate the weights needed...this runs without stated
errors but ultimately doesn't actually generate the weights needed by Step
2, which is here:
ftp://ftp.cdc.noaa.gov/pub/Public/kmahoney/NWM_PR/HRRR2WRFHydro_regrid.ncl
)

I am far out of my comfort zone in the details of netcdf files and all the
various tools (nco? ncl? ncml?) to potentially manipulate them into
something recognizable by standard ncl/esmf functions.

Thanks in advance for any experience or advice someone might be able to
offer!

Kelly Mahoney
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