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Note

On a spreadsheet, use the following equation to get an answer in degrees in the range 0 ≤ Φ < 360:

Mathdisplay
\phi =\mod\left(180 + \frac{180}{\pi}atan2(v,u),360\right)

The atan2 arguments vary by type of software and in some applications the arguments (v, u) are switched around. For more details please have a look at the section 'Realizations of the function in common computer languages' in the following link: https://en.wikipedia.org/wiki/Atan2




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This document has been produced in the context of the Copernicus Climate Change Service (C3S).

The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, operator of C3S on behalf of the European Union (Delegation agreement signed on 11/11/2014). All information in this document is provided "as is" and no guarantee or warranty is given that the information is fit for any particular purpose.

The users thereof use the information at their sole risk and liability. For the avoidance of all doubt, the European Commission and the European Centre for Medium-Range Weather Forecasts have no liability in respect of this document, which is merely representing the author's view.

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