Winds in Mediterranean sea, the “wind Rose” and wind scales
Wind is the rough horizontal movement of air whose (of which) we can recognize intensity and direction. To measure its speed we use the anemometer, that can have several measure units:
- m/s > meters per second
- km/h > kilometres per hour
- NM/h >Nautical Miles per hour, 1NM=1852m
- nds (Ita) = kts – kn (Eng) = kn (De) > knot, 1 kts-kn = 1NM/h = 0,514 444 m/s = 1,852 km/h
- Bft o Beaufort, scale that measures empirically wind intensity, based mainly on observed sea conditions. Its full name is the Beaufort wind force scale.