[Met_help] [rt.rap.ucar.edu #78351] History for MODE-TD Velocity

[John Halley Gotway via RT]

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  Initial Request
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What units are the x and y components of the object velocity in?  I'm specifically referencing the X_DOT and Y_DOT attributes outputted in MODE_TD's 3d_ss file.  I would assume it's grid lengths per hour.


Thanks, Josh


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  Complete Ticket History
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Subject: MODE-TD Velocity
From: John Halley Gotway
Time: Fri Oct 21 10:54:15 2016

Hello Josh,

I see you're wondering about the units of X_DOT and Y_DOT in the
output of
MODE Time Domain.

Page 230 of the MET Users Guide contains a brief description of
velocity,
but I do see that there's nothing specific about units.  We'll update
the
documentation for the next version:

http://www.dtcenter.org/met/users/docs/users_guide/MET_Users_Guide_v5.2.pdf

The the velocity is grid units per unit of the timestep you've passed
to
the tool.  If you give it hourly data, it's grid lengths per hour.
For
6-hourly data, it's grid lengths per 6-hours.

Hope that helps clarify.

Thanks,
John Halley Gotway

On Fri, Oct 21, 2016 at 9:06 AM, Markel, Joshua via RT
<met_help at ucar.edu>
wrote:

>
> Fri Oct 21 09:06:41 2016: Request 78351 was acted upon.
> Transaction: Ticket created by joshua.markel at und.edu
>        Queue: met_help
>      Subject: MODE-TD Velocity
>        Owner: Nobody
>   Requestors: joshua.markel at und.edu
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=78351 >
>
>
> What units are the x and y components of the object velocity in?
I'm
> specifically referencing the X_DOT and Y_DOT attributes outputted in
> MODE_TD's 3d_ss file.  I would assume it's grid lengths per hour.
>
>
> Thanks, Josh
>
>

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Subject: MODE-TD Velocity
From: Markel, Joshua
Time: Fri Oct 21 12:41:54 2016

Hi John,


That answers my question, thanks for your help.


Josh

________________________________
From: John Halley Gotway via RT <met_help at ucar.edu>
Sent: Friday, October 21, 2016 11:54:16 AM
To: Markel, Joshua
Subject: Re: [rt.rap.ucar.edu #78351] MODE-TD Velocity

Hello Josh,

I see you're wondering about the units of X_DOT and Y_DOT in the
output of
MODE Time Domain.

Page 230 of the MET Users Guide contains a brief description of
velocity,
but I do see that there's nothing specific about units.  We'll update
the
documentation for the next version:

http://www.dtcenter.org/met/users/docs/users_guide/MET_Users_Guide_v5.2.pdf

The the velocity is grid units per unit of the timestep you've passed
to
the tool.  If you give it hourly data, it's grid lengths per hour.
For
6-hourly data, it's grid lengths per 6-hours.

Hope that helps clarify.

Thanks,
John Halley Gotway

On Fri, Oct 21, 2016 at 9:06 AM, Markel, Joshua via RT
<met_help at ucar.edu>
wrote:

>
> Fri Oct 21 09:06:41 2016: Request 78351 was acted upon.
> Transaction: Ticket created by joshua.markel at und.edu
>        Queue: met_help
>      Subject: MODE-TD Velocity
>        Owner: Nobody
>   Requestors: joshua.markel at und.edu
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=78351 >
>
>
> What units are the x and y components of the object velocity in?
I'm
> specifically referencing the X_DOT and Y_DOT attributes outputted in
> MODE_TD's 3d_ss file.  I would assume it's grid lengths per hour.
>
>
> Thanks, Josh
>
>


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