[ncl-talk] Function for computing u, v components of the divergence

[Barry Lynn]

Hello:

If you are using WRF output, why not just use the u,v fields from WRF
itself?

Perhaps I don't understand your question.

Barry

On Thu, Oct 1, 2020 at 4:44 PM Pei, Lisi via ncl-talk <
ncl-talk at mailman.ucar.edu> wrote:

> Hi there,
>
> As the function uv2dv_cfd can give the divergence field for a regional
> data at fixed grid, I am wondering if there is a function similar to dv2uvf
> (this function only works for global grids) that can generate the u, and v
> component for the divergence derived from uv2dv_cfd. There seem to be a lot
> built-in function similar to dv2uvf (e.g. *dv2uvF_Wrap*
> <https://www.ncl.ucar.edu/Document/Functions/Contributed/dv2uvF_Wrap.shtml>
> , *dv2uvG*
> <https://www.ncl.ucar.edu/Document/Functions/Built-in/dv2uvG-1.shtml>,
> *dv2uvg*
> <https://www.ncl.ucar.edu/Document/Functions/Built-in/dv2uvg.shtml>, *uv2dvF
> <https://www.ncl.ucar.edu/Document/Functions/Built-in/uv2dvF-1.shtml>*)
> but none of them would suite a regional grid such as WRF outputs. If I am
> not missing anything, would anybody be able to share an efficient way to
> calculate the u and v component of a 2-D divergence field at pressure level
> by NCL?
>
> Thanks for any help in advance.
>
> Best,
> Lisi
>
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-- 
Barry H. Lynn, Ph.D
Senior Associate Scientist, 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

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