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

[Jason Padovani Ginies]

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

Good luck, hope this helps.

Jason

On Wed, Apr 11, 2012 at 9:03 AM, Rambler <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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