[Wrf-users] WRF WPP Wind u and v components

[Tricia Slovacek]

Hi-

To complete this answer, yes the u and v winds are on mass points when
output from WPP (or UPP).

Cheers;
Tricia Slovacek


On 04/11/2012 12:28 PM, Jason Padovani Ginies wrote:
> Hi there,
>
> As I am to understand, WRF rotates earth winds to grid winds during the
> simulation. However two variables in the output are sinalpha and
> cosalpha. In order to rotate back the output u and v components to earth
> relative, you have to use the equations found in the link I am including
> hereunder
>
> http://forum.wrfforum.com/viewtopic.php?f=8&t=3225
> <http://forum.wrfforum.com/viewtopic.php?f=8&t=3225>
>
> Good luck, hope this helps.
>
> Jason
>
> On Wed, Apr 11, 2012 at 9:03 AM, Rambler <soleiman at rambler.ru
> <mailto:soleiman at rambler.ru>> wrote:
>
>     Hello to all
>     Could some one explain me the wind u and v components  in grib files
>     which made by WRF WPP is rotated to the earth coordinate ( north,
>     east) or in grid direction (x, y) ? Also they are in mass point or not?
>     Thanks.
>
>     Best regards,
>     Suleiman Mostamandy
>
>
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