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

[Mary Haley]

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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