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u and v components of wind - true east/north or model domain x/y direction?

Added by Sam Vanden Broucke about 2 years ago

Hi all,

Regarding the model output u and v components of wind, are they defined according to true east/north or according to the model domain x/y directions?

If the latter, I assume a correction is needed to true lon/lat direction when comparing to observed u/v measurements or observed wind direction, right?

Kind regards,

Sam Vanden Broucke


Replies (2)

RE: u and v components of wind - true east/north or model domain x/y direction? - Added by Edmund Meredith about 2 years ago

The U and V components are defined wrt to the computational grid. You can de-rotate them using the CDO tool “rotuvb”. If de-rotating “manually” by the de-rotation formula, be careful that there may still be an error in the CCLM documentation. See this discussion https://redc.clm-community.eu/boards/10/topics/518
Good luck!

RE: u and v components of wind - true east/north or model domain x/y direction? - Added by Sam Vanden Broucke about 2 years ago

Okay, I’ll try that. Thanks for the quick reply Edmund!

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