[ncl-talk] gsn_csm_vector_scalar_map_polar

[Adam Phillips]

Hi Mauro,
Are you getting any error messages when the first plot is drawn? If so,
please send the messages to the group.
I am guessing that the WRF-chem data has 2-dimensional latitudes and
longitudes. gsnAddCyclic will default to False due
to the 2-dimensional coordinates. Setting gsnAddCyclic to True is likely
the way you want to go here, but that does
not explain why only 1/2 the globe is covered in vectors. That makes me
think that something is amiss with the
passing of the latitude/longitude coordinates to NCL, which should result
in error messages.

If you could also pass along your script that would make debugging easier
for the group.
Adam

On Wed, Apr 7, 2021 at 7:43 AM Mauro Morichetti via ncl-talk <
ncl-talk at mailman.ucar.edu> wrote:

> Hi all,
>
> as the subject, I have a specific question about the function:
> gsn_csm_vector_scalar_map_polar.
>
> I am trying to plot a comparison between a WRF-Chem output and ERA5 data,
> for the geopotential height and the horizontal wind at 500 hPa, in arctic
> area.
>
> I have an issue plotting the wind vectors: in WRF-chem output (panel a -
> map attached) the wind doesn’t respect the domain as the values in the
> background. I had problem in the past with the gsnAddCyclic function, but
> here I could not understand why the function doesn’t interfere with the
> vectors.
>
> Attached the script.
>
> Anyone can Help? Thanks
>
> Regards
>
> ---------
>
> Ph.D. Mauro Morichetti
> Department of Industrial Engineering and Mathematical Science
> Marche Polytechnic University, Ancona, Italy
> m.morichetti at pm.univpm.it
>
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-- 
Adam Phillips
Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
www.cgd.ucar.edu/staff/asphilli/   303-497-1726

<http://www.cgd.ucar.edu/staff/asphilli>
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