[ncl-talk] How to plot tropopause height with units in hPa.

[Xi Chang]

Thanks Adam,

Is there any example for this in which I can plot the tropopause height
(single line contour) on top the zonal mean wind (shading). I tried to use
overlay but it seems to be complicated and the axis is not matched. Please
find an example below using matlab.


On Thu, Jul 16, 2015 at 11:16 PM, Adam Phillips <asphilli at ucar.edu> wrote:

> Hi Chang,
> As you likely know there are numerous height/latitude examples here:
> http://www.ncl.ucar.edu/Applications/height_lat.shtml
>
> If you want to overlay a zonal mean on top of a height (Y-axis) by
> latitude (x-axis) plot I would recommend creating each plot separately, and
> then using gsn_add_annotation to add the zonal mean plot to the
> height/latitude plot.
> http://www.ncl.ucar.edu/Applications/annotate.shtml
>
> You will have to work on getting the *amJust*
> <http://www.ncl.ucar.edu/Document/Graphics/Resources/am.shtml#amJust>,
> *amOrthogonalPosF*
> <http://www.ncl.ucar.edu/Document/Graphics/Resources/am.shtml#amOrthogonalPosF>
> and *amParallelPosF*
> <http://www.ncl.ucar.edu/Document/Graphics/Resources/am.shtml#amParallelPosF>
> settings correct, but it should be quite possible.
>
> Using the overlay function may be another possibility but I do not believe
> that will work as your two plots do not share the same Y-axis coordinate
> values (pressure vs. U-wind values).
>
> Hope that helps. If not or if you have any other questions, please respond
> to the ncl-talk email list.
> Adam
>
> On Thu, Jul 16, 2015 at 11:27 AM, Xi Chang <xi.chang01 at gmail.com> wrote:
>
>> Hi NCL,
>>
>> I have zonal mean tropopause height data H (units: hPa) as a function of
>> latitude (-90:90). How could I plot this values by using "gsn_csm_pres_hgt"
>> function, so that I can overlay them with zonal mean wind U data.
>>
>> Thanks for any hints.
>> Chang
>>
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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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