[ncl-talk] divergence

[Dennis Shea]

[1] Spherical harmonics are used to compute divergence (highly accurate)

[2] Spherical harmonics are used to derive the divergent wind components.
from a divergence field.

see: http://www.ncl.ucar.edu/Applications/wind.shtml

===
These codes used by NCL are described at:
     https://www2.cisl.ucar.edu/resources/legacy/spherepack

Thses codes require the data to be global.

http://www.ncl.ucar.edu/Document/Functions/Built-in/uv2dvF-1.shtml

The _Wrap means that NCL will append meta data.





On Fri, Dec 19, 2014 at 10:59 AM, Abdoulaye SY <sy.abdoulaye3 at ugb.edu.sn>
wrote:

> Hi
>
> I want to calculate divergence of the water vapor flux with ncl.
>
> I use
> * div    = uv2dvF_Wrap(qu,qv)            *
>     and
> *          dv2uvf (div, ud, vd) *where qu and qv are water vapor flux
> zonal and meridional respectively.
>
> I want to understand the Principles of operation of these functions. I
> have read the documentation but it is not clear.
>
> thanks
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20141219/95c1be5e/attachment.html