How do I convert model grid-relative wind to earth-relative wind (so that I can compare model wind to observations?

Moderator: NCAR/MMM

Locked
kwerner
Posts: 2335
Joined: Wed Feb 14, 2018 9:21 pm

How do I convert model grid-relative wind to earth-relative wind (so that I can compare model wind to observations?

Post by kwerner » Thu Aug 30, 2018 12:45 am

Below are the equations to convert model u and v to earth-relative u and v:

u-earth = u-model*cosalpha - v-model*sinalpha
v-earth = v-model*cosalpha + u-model*sinalpha

where cosalpha and sinalpha can be found in model input and output files.
NCAR/MMM

Locked

Return to “FAQ: Miscellaneous”