20021204: Question about NVD

Kevin,

GEMPAK doesn't have a 3-D trajectory program, but I did
create gptraj for 2-D trajectories which can be used 
assuming a constant level such as a theta level, pressure level,
or boundary layer. I could instrument the program to
calculate the change in a quantity (such as height) along the
trajectory.

Steve Chiswell




>From: "Kevin Polston" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200212052107.gB5L7G424953

>Steve,
>
>I was interested in the ETA/AVN gridded data, and being able to calculate it t
> he
>way the Redbook Graphic images show.
>
>KP
>
>Unidata Support wrote:
>
>> Kevin,
>>
>> What data set are you interested in, and how do you want to compute NVD?
>>
>> Steve Chiswell
>>
>> >From: "Kevin Polston" <address@hidden>
>> >Organization: UCAR/Unidata
>> >Keywords: 200212041939.gB4JdF414811
>>
>> >Hi,
>> >
>> >I was wondering if there is a way to create a "net vertical displacment" gr
> aph
>> > ic
>> >with gempak.   I was wanting to try and create a script to display the Maji
> c C
>> > hart
>> >but I am not sure how to (or if it even possible) to create an NVD graphic 
> fro
>> > m
>> >gempak.  Is there a way?  Thanks.
>> >
>> >Kevin Polston
>> >Senior Instructor, NWSTC
>> >Kansas City MO 64152
>> >
>> >816-880-9314 ext 273
>> >
>>
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>