Wind rose

Wind rose - is a graphic image of the frequency of occurrence of various directions (points) of the wind in the conditions of the area and is defined by the country of light where the wind blows. The wind rose is of great importance for the hygienic solution of such tasks as planning of settlements, the device on their territory hospitals, schools, sports facilities and other objects, which should be located on the windward side in relation to various industrial enterprises that could contaminate the air.

wind rose
Wind rose

For compiling wind roses lay on the drawing from a Central point towards different points segments of a certain scale, corresponding to the wind in this direction during the observation period, and end them connect with straight lines. To indicate wind directions taken the initial letters of the names of the compass: North, South - South - East, 3 - West. In addition to the four major points of the compass used intermediate between them, their number may reach 16. The scheme of points is provided in figure, on which simultaneously provides a graphic image wind of the Rumba observed in this area during the year. Calm weather (no wind) is represented by a circle in the center of the drawing; it's radius is equal to the number of stills. The scheme shows that the prevailing wind direction in this area - South-East.