[ncl-talk] Managing terrain height in the script wrf_CrossSection_add_smooth_terrain4.ncl

Fri Jun 3 13:27:53 MDT 2016

Please see the examples on this page:

http://www.ncl.ucar.edu/Applications/2Dvertcoord.shtml

If you continue to have problems, I think wrfhelp at ucar.edu might have some
better suggestions on how to use the WRF scripts to get the plot you want.

--Mary

On Wed, Jun 1, 2016 at 11:46 PM, sangeeta maharjan <
sangeetamaharjan at gmail.com> wrote:

> Hi Mary,
> It have been using gsn_csm_xy to plot terrain .  The script is in the
> attachment.
>
> After your suggestion, I replaced gsn_csm_xy  by gsn_csm_contour but
> the plot didnot show any terrain contour (see gsn_csm_contour.png in
> the attachment).
>
> I just  replaced   " contour_ter =
> gsn_csm_xy(wks,X_plane,ter_plane,opts_ter) "   with
>
> " contour_ter = gsn_csm_contour(wks,ter_plane,opts_ter)"     in the script.
>
> Thanks.
>
> Sang.
>
> On Sat, May 28, 2016 at 1:00 AM, Mary Haley <haley at ucar.edu> wrote:
> >
> > Again, without a script, we can't tell what the problem might be.  Your
> tickmarks are pointing in, which is strange.  This seems to indicate that
> you are plotting your data with gsn_contour, and not gsn_csm_contour.
> >
> > One thing might be to try using gsn_csm_contour, and setting
> res at gsnYAxisIrregular2Linear = True
> >
> >
> http://www.ncl.ucar.edu/Document/Graphics/Resources/gsn.shtml#gsnYAxisIrregular2Linear
> >
> > If you continue to have issues with this, *please* include a script. We
> might also have to ask for the data.
> >
> > --Mary
> >
> >
> > On Tue, May 24, 2016 at 11:39 PM, sangeeta maharjan <
> sangeetamaharjan at gmail.com> wrote:
> >>
> >> Hello Xiaoming and  Mary,
> >>
> >> Thanks for your reply.
> >> I am aware that it is a west-east cross section plot. I tried but could
> not add the minor tick marks in vertical axes. The values in ter_plane used
> in the scripts yields (max value is red  in color (21th value)
> >>
> >> Variable: ter_plane
> >> Type: float
> >> Total Size: 272 bytes
> >>             68 values
> >> Number of Dimensions: 1
> >> Dimensions and sizes:   [Horizontal | 68]
> >> Coordinates:
> >> Number Of Attributes: 3
> >>   _FillValue :    9.96921e+36
> >>   units :   m
> >>   description :   Terrain Height
> >> (0)   537.3745
> >> (1)   556.2093
> >> (2)   556.2093
> >> (3)   552.6631
> >> (4)   551.8929
> >> (5)   588.4611
> >> (6)   640.3762
> >> (7)   713.1735
> >> (8)   804.7409
> >> (9)   854.6913
> >> (10)  849.4119
> >> (11)  805.8835
> >> (12)  763.5001
> >> (13)  735.0173
> >> (14)  856.4299
> >> (15)  1169.83
> >> (16)  1492.322
> >> (17)  1652.575
> >> (18)  1694.905
> >> (19)  1765.424
> >> (20)  1889.178
> >> (21)  1945.099
> >> (22)  1869.276
> >> (23)  1755.734
> >> (24)  1730.924
> >> (25)  1704.013
> >> (26)  1546.452
> >> (27)  1411.18
> >> (28)  1363.609
> >> (29)  1243.166
> >> (30)  1051.444
> >> (31)  936.7072
> >> (32)  941.271
> >> (33)  928.4125
> >> (34)  861.8909
> >> (35)  960.158
> >> (36)  1142.136
> >> (37)  1091.726
> >> (38)  925.554
> >> (39)  876.4838
> >> (40)  894.1756
> >> (41)  927.5086
> >> (42)  1036.723
> >> (43)  1188.228
> >> (44)  1198.813
> >> (45)  1186.619
> >> (46)  1269.593
> >> (47)  1163.258
> >> (48)  913.6985
> >> (49)  847.5559
> >> (50)  987.7681
> >> (51)  1175.981
> >> (52)  1240.032
> >> (53)  1103.708
> >> (54)  881.4406
> >> (55)  781.1543
> >> (56)  893.9818
> >> (57)  1047.922
> >> (58)  1127.229
> >> (59)  1131.302
> >> (60)  1081.057
> >> (61)  976.4305
> >> (62)  924.3822
> >> (63)  904.832
> >> (64)  861.3491
> >> (65)  830.9657
> >> (66)  798.5671
> >> (67)  748.0306
> >>
> >> With reference to plot in the  attachment, the temperature  contour
> left and right  of maximum peak is close to 1500 m so i fell that the the
> terrain height is reduced by some hundreds.
> >>
> >> Regards
> >> Sang.
> >>
> >> On Mon, May 23, 2016 at 8:47 PM, xiaoming Hu <yuanfangcan at hotmail.com>
> wrote:
> >>>
> >>> I don't see anything wrong with your plot.
> >>>
> >>> Are you questioning the interpolated terrain height is wrong?
> >>> Since your angle is 90degree, basically west-east cross section.   It
> is very easy to check the terrain height yourself to see if the
> interpolated terrain height by wrf_CrossSection_add_smooth_terrain4.ncl
>  is reasonable.
> >>>
> >>> Cheers!
> >>> Xiaoming
> >>>
> >>> ________________________________
> >>> Date: Sun, 22 May 2016 09:38:27 +0545
> >>> From: sangeetamaharjan at gmail.com
> >>> To: ncl-talk at ucar.edu
> >>> Subject: [ncl-talk] Managing terrain height in the script
> wrf_CrossSection_add_smooth_terrain4.ncl
> >>>
> >>> Dear All,
> >>>
> >>> I have used the wrf_CrossSection_add_smooth_terrain4.ncl to study
> distribution of  TKE along the cross section. The problem is  the height of
> terrain seems to lesser than the actual one. For example, the maximum
> terrain height with in the cross section has to be  about 1900 meters but
> it is lesser by 300 meters in the plot generated by the script.
> >>>
> >>>
> >>> Please find the sample of plot showing the reduced terrain height  for
> your kind reference in the attachment.
> >>>
> >>> I would appreciate any insight to manage the terrain heights in the
> script.
> >>>
> >>> Thanks & Regards.
> >>>
> >>> Sang,
> >>>
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> >>
> >>
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