[ncl-talk] CAPE and CIN calculated from function "wrf_cape_3d"

[Bill Ladwig]

Hi Zhifeng,

Without seeing a script or the data, there is no way to know from our end.
Have you tried creating a Skew-T (
http://www.ncl.ucar.edu/Applications/skewt.shtml) to look at your data?
The CAPE values calculated from the Skew-T will be a little different than
what is used by wrf_cape_3d, since I think the Skew-T CAPE only calculates
surface based CAPE.  But, it should give an idea of how high the values
could be.  If you're seeing wildly different results, then we would need to
see the data to investigate.

Hope this helps,

Bill


On Sun, Mar 19, 2017 at 9:22 PM, Zhifeng Yang <yangzf01 at gmail.com> wrote:

> Hi
>
> I used function "wrf_cape_3d" to calculate CAPE and CIN. The return values
> are as follows (from NCL website, http://www.ncl.ucar.edu/
> Document/Functions/Built-in/wrf_cape_3d.shtml ):
>
>    - *p*, *t*, *q*, *z* (time,lev,lat,lon) and *psfc*, *zsfc*
>    (time,lat,lon)
>    - *p*, *t*, *q*, *z* (lev,lat,lon) and *psfc*, *zsfc* (lat,lon)
>    - *p*, *t*, *q*, *z* (lev) and *psfc*, *zsfc* (scalars)
>
> My data are similar to the third situation, with only 1-dimensional
> vertical data. However, I realized the calculated CAPE and CIN are all from
> the surface level, and their values are very large. I am not sure they are
> reasonable or not. Could you do me a favor to double check it? Thank you
> very much.
>
> Please the attached plots.
>
> Best,
>
> Zhifeng
>
>
>
> _______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> 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/20170321/d78d87ed/attachment.html