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

Barry Lynn barry.h.lynn at gmail.com
Mon Nov 13 08:30:37 MST 2017


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>
>
>
> _______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>


-- 
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
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
US 914 432 3108
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20171113/75361c0d/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 52203 bytes
Desc: not available
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20171113/75361c0d/attachment.png>


More information about the ncl-talk mailing list