Description of the 27 Lamb Codes and their 3D vector codifications used in this work.

The three groups, in columns, show the 9 classes (in rows) for anticyclone circulation (A), undefined circulation, and cyclone circulation (C). In each group the first column is the Lamb Code, the second column is the wind direction and the third column is our 3D vector codification (pointing to the surface of the winds cube shown in Figure 1). The classes of the first row correspond to zero daily average wind and in successive rows, rotating clockwise, are the eight conventional directions of the wind from North-East to North. The Lamb Code 10 is for winds of undetermined vorticity and direction.