[gradsusr] VGP (Vorticity Generation Parameter)

[Daniel Nairn]

Thanks, I was only /1000 so that looks a little more 'realistic' now. I
don't know how to script the mean shear component so I'll see how this goes
with bulk shear. Thanks for your help.

On 28 September 2015 at 16:39, L.B. <bcbass2989 at gmail.com> wrote:

> I just use 0-3km bulk shear, and use the formula:
>
> define vgp3 = (sqrt(CAPE)*shr3)/3000)'
>
> To calculate mean shear though, you would need to sum up the shear values
> through that layer and divide by that many levels. For 0-3km, the surface
> to 700mb range is a good proxy, although keep in mind that your values will
> be off in higher elevations.
>
> *-------*
>
> *William (L.B.) LaForce*Meteorologist
> www.tornadoinsanity.com
>
> On Mon, Sep 28, 2015 at 11:01 AM, Daniel Nairn <dannairn at gmail.com> wrote:
>
>> Hi
>>
>> Has anybody successfully written a script to display VGP through GrADS? I
>> have a script almost working, though its currently using 0-3km *bulk
>> shear*, rather than the correct 0-3km *mean shear*. I'm not sure how to
>> calculate the 0-3km mean shear value through GrADS, does anybody know how
>> to do this?
>>
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