[ncl-talk] Plotting nam winds on regional map

[Andrew Kren - NOAA Affiliate]

I have a script that I run in real-time to generate NAM forecast output at
various pressure levels and plot variables. Attached is my script. I also
attached a plot of the 500 mb heights/vorticity from the program.

For some reason, I cannot get the u and v winds to plot, meaning the wind
barbs will not show up on the plot. I followed the convention for a 2 deg
lat/lon grid, since NAM is on a lon2d/lat2d grid. I used gsnAddCyclic =
false, declared my vfXArray and vfYArray, and used TriangularMesh for my
grid, the same settings I used for plotting the vorticity, which showed up
fine. I am thus stumped why the winds won't show up. Any advice is most
appreciated. Sorry for the long ncl code.

Thanks,

-- 
Andrew Kren, PhD
Research Scientist I, Global Observing Systems Analysis (GOSA) Group
NOAA ESRL Global Systems Division (Rm 3C515)
325 Broadway, Boulder, CO 80305
(303) 497-5418
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