[ncl-talk] divergence

Abdoulaye SY sy.abdoulaye3 at ugb.edu.sn
Fri Dec 19 14:03:08 MST 2014


Thank you Dennis

My problem is when calculate divergence with

* div    =uv2dvF_Wrap(qu,qv) *I have result* div *is an array of small
values like 1.427085e-05

when i calculate the components with *dv2uvf (div, ud, vd) *i get
ud=14.63604

vd=-2.875391

Why this difference?

2014-12-19 17:59 GMT+00:00 Abdoulaye SY <sy.abdoulaye3 at ugb.edu.sn>:
>
> 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
>
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