[ncl-talk] Vertical Cross-section on a rectilinear grid with "degrees-north" units

[Dennis Shea]

Also, you can not do a *vertical *cross-section with a vertical coordinate
(p, z, ...)

On Mon, Nov 13, 2017 at 8:30 AM, Barry Lynn <barry.h.lynn at gmail.com> wrote:

> Hi:
>
> Is there any reason you aren't plotting the vertical cross sections using
> WRF output directly?
>
> Barry
>
> On Mon, Nov 13, 2017 at 2:17 PM, Lara Quitián Hernández <
> laraquitianhernandez at gmail.com> wrote:
>
>> Good afternoon,
>>
>> I'm trying to plot a vertical cross-section of a cyclone in order to
>> analyze its wind shear and, therefore, cyclone tilt.
>> [image: Imágenes integradas 1]
>> I've made a re-grid on a rectilinear mesh (e.g., ECMWF grid) of several
>> WRF simulations. Therefore, one of my outputs is defined as follows:
>>
>>        File "SPD_regrid_d02_D19_416.nc"
>>
>> File type: NetCDF-3/CDM
>> ------------------------------
>>
>> netcdf file:/Volumes/MyPassport/SPD_regrid_416.nc {
>>   dimensions:
>>     times = UNLIMITED;   // (0 currently)
>>     time = 7; (7 time-steps)
>>     lat = 141;
>>     lon = 201;
>>     ncl4 = 7;
>>     latitude = 141;
>>     ncl6 = 201;
>>   variables:
>>     float spd(time=7, lat=141, lon=201);
>>       :_FillValue = 9.96921E36f; // float
>>
>>     int time(time=7);
>>
>>     float lat(lat=141);
>>       :units = "degrees_north";
>>       :long_name = "latitude";
>>       :_FillValue = -9999.0f; // float
>>
>>     float lon(lon=201);
>>
>>     float latitude(latitude=141);
>>       :units = "degrees_north";
>>       :long_name = "latitude";
>>       :_FillValue = 9.96921E36f; // float
>>
>>   // global attributes:
>>   :creation_date = "martes, 30 de mayo de 2017, 10:49:07 CEST";
>>   :Conventions = "None";
>>   :source_file = "original-file.nc";
>>   :title = "NCL Simple Approach to netCDF Creation";
>> }
>>
>>
>> --
>>
>> I would like to know, which variable is the best for this purpose (omega,
>> u-wind, v-wind, equivalent potential temperature (eth), etc.) and which
>> function should I use in order to represent the vertical cross-section,
>> taking into account that I do not have pressure levels in hPa or Pa units,
>> but "degrees-north".
>>
>> Thank you very much.
>>
>> Sincerely,
>> Lara
>>
>>
>>
>> *Lara Quitián Hernández, PhD Student*
>> Departamento de Física de la Tierra, Astronomía y Astrofísica II
>> Facultad de Ciencias Físicas
>> Ciudad Universitaria, Plaza Ciencias, 1
>> 28040 Madrid. Spain
>> Email: lquitian at ucm.es <mlunar at aemet.es>
>>
>>
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>>
>
>
> --
> Barry H. Lynn, Ph.D
> Senior Lecturer,
> The Institute of the Earth Science,
> The Hebrew University of Jerusalem,
> Givat Ram, Jerusalem 91904, Israel
> Tel: 972 547 231 170
> Fax: (972)-25662581
>
> C.E.O, Weather It Is, LTD
> Weather and Climate Focus
> http://weather-it-is.com
> Jerusalem, Israel
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>
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