Hi Patrick,
I think the function that you want is called dim_sum, which will sum up
the rightmost dimension of an array:
http://www.ncl.ucar.edu/Document/Functions/Built-in/dim_sum.shtml
Assuming your arrays u,v, and pm are dimensioned lev x lat x lon:
pm_plane = pm(0,:,:) ;set up pm_plane to keep coordinate variables
pm_plane = (/ dim_sum(pm(lat|:,lon|:,lev|:)) /) ;sum up the rightmost
;dimension (lev), don't transfer coordinate variable info to
;pm_plane (or in this case destroy pm_plane coord var info)
You can also use the _Wrap version of this function, which will transfer
the correct coordinate variables lat,lon to pm_plane. Make sure you load
contributed.ncl if you do this.
http://www.ncl.ucar.edu/Document/Functions/Contributed/dim_sum_Wrap.shtml
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
pm_plane = dim_sum_Wrap(pm(lat|:,lon|:,lev|:))
Repeat for u_plane and v_plane...
Adam
Patrick O'Reilly wrote:
> Hello,
>
> I am using a set of preconfigured NCL scripts to create imagery from
> WRF/Chem output. I have a working script (attached) that plots PM2.5 and
> winds at the surface, but I now want to plot (plan view) the total PM2.5 at
> all levels, meaning adding every level together and plotting the total PM2.5
> in the model domain, on one plot. This is probably an easy solution for you
> NCL pros, but I am a novice and am having trouble.
>
> I thought one solution would be to loop through each level and add the PM2.5
> on that level to the total PM2.5, then plot the total PM2.5. But maybe
> there's an NCL function that does this automatically?
>
> Any help would be greatly appreciated.
>
> Patrick
> _________________________________________
> Patrick O'Reilly
> Meteorological Decision Support Scientist
> The STORM Project at UNI
> patrick.oreilly AT unknown 319-273-3789
> http://www.uni.edu/storm
>
> "No trees were killed in the making of this e-mail...however,
> a large number of electrons were horribly inconvenienced."
>
>
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-- -------------------------------------------------------------- Adam Phillips asphilli AT unknown National Center for Atmospheric Research tel: (303) 497-1726 ESSL/CGD fax: (303) 497-1333 P.O. Box 3000 Boulder, CO 80307-3000 http://www.cgd.ucar.edu/cas/asphilli _______________________________________________ ncl-talk mailing list ncl-talk AT unknown http://mailman.ucar.edu/mailman/listinfo/ncl-talk
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