Advice 1: How to make a compass rose

WINDROSE is a vector diagram, illustrative drawing, which characterizes the regime of winds in a certain area for a certain period. It helps when planning the construction of houses and urban development, and often determines the well-being of certain urban areas. The wind rose can be a month or a few days.
How to make a compass rose
You will need
  • Pencil, piece of paper in the box, the table data of wind direction from any meteorite.
Start compiling a wind rose is with the coordinate axes. In this case, however, they are not 2, as usual, and 8: on all sides and combinations. From the center of coordinates need to put the axis in all directions horizontally, vertically and diagonally at an angle of 45 degrees. Sign axis as Yu (South), (North), W (West), (East), and SE (Southeast), SW (southwest), NW (Northwest) and SW (North-East). Now you can start to build roses.
Write the number of observations of wind over a certain period in a certain area, for example, 20 days in Moscow. These data are easy to take on any weather website. The results should look like: 1st day of observation – the direction of NW, 2nd NW, 3rd–, etc. until the last day of measurements. The easiest way to write data in two-line table.
Group results for the wind directions. For example, it appears that for 20 days, wind direction North-West (NW) in Moscow was 7 days, West (H) – 4 days, etc. Should be 8 digits on the number of directions, some of which may be 0 if the wind direction during the selected period was never. The sum of all digits should be equal to the number of days of measurements. Check - if not, you then thought wrong.
Now start the build. To do this, select and label on each axis a single cut. Now for each axis need to postpone counted the number of days the wind of the given direction, for example SW – 3, th – 5 units., etc. After all the points for 8 axes postponed, simply connect them by line segments to obtain a closed polygonal contour. The resulting ratnabali flower with sharp beams will be similar to the rose – this is rose of the winds for a given location over a selected period. It should be noted that each region has a typical monthly and seasonal wind roses, which largely characterize the climate of the area.

Advice 2 : How to draw a wind rose

Rose of the winds is a circular vector diagram that shows the frequency of occurrence of wind in different directions for a certain period of time. Built rose of the winds are usually on the average long-term data for year, season, month.
How to draw a wind rose
You will need
  • - a sheet of paper;
  • pencil or pen;
  • - calendar weather.
In order to draw the rose of the winds, you will need the data of daily wind direction for some time. For example, you can observe the weather for one month, recording daily information about wind direction in the weather Calendar".
Draw on a sheet of paper intersecting lines (according to the principle coordinate system), which will specify the principal directions, otherwise they are called Rumba horizon (North–South, West–East). Then swipe through the center of the two lines (North-West, South-West, North-East, South-East). All you should have eight directions (compass points). Sign their names on your drawing (S; u; W; V; s-Z; s-V; SW; se ).
Using data from "Calendar, weather", in each direction from the center in the direction where the wind blows, check the scale of the number of days during which the prevailing wind is a certain direction. You can choose any convenient scale, e.g. 1 day to take 0.5 cm If, for example, wind South-West blew in a month 5 days it is required from the centre of the graph by a line, which is oriented to the South-West, to defer 2.5 cm and make a mark.
In the same way mark winds on each of the eight directions.
Of the mark consistently connect straight lines. In the center of a rose of winds near or specify the number of days with calm weather.
Ray rose of the winds you can make a conclusion about the prevailing winds in your area during the month.
Wind direction is the direction (point) of the horizon, where the wind blows. Accordingly, the South wind always blows to the North, West to East, South-West to North-East, etc. In meteorology, wind direction is determined by 8 or 16 rhumbs.
Useful advice
The first written mention of the rose of the winds belong to the TWELFTH century.

Graphs of the wind rose in mandatory are made when designing construction projects to account for the effects of the prevailing winds in a particular region in the construction of housing, objects socially-cultural appointment and industry.
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