[CF-metadata] X_to_direction in grid or true direction?

From: Heiko Klein <Heiko.Klein>
Date: Wed, 02 May 2012 14:14:24 +0200

Hi,

after having read the discussion about eastward_wind/x_wind, I just got
curious about the X_to_direction parameters.

It is documented as: unit: degree,
X_to_direction and indicates the direction towards which the velocity
vector of X is headed.

but it doesn't explain exactly which direction:

Is it:

wind_to_direction = atan(y_wind/x_wind)

or

wind_to_direction = atan(northward_wind/eastward_wind)


Best regards,

Heiko
Received on Wed May 02 2012 - 06:14:24 BST