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How to build a wind rose

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How to build a wind rose

A wind rose is called a circular vector diagram reflecting the direction of the wind movement during a certain period.

Such graphics are widely used inMeteorology, climatology, as well as in the construction of runways of airfields, residential areas and industrial zones. A stylized image of rose winds is often used in heraldry.

Today it can be seen on the symbolism of NATO or ancient geographical maps.

Only in contrast to these diagrams, in a stylized image, all rays are of equal length.

You will need

  • "Weather Calendar", a diary of observations, lined paper in a cage, ruler, pencil, Excel table

Instructions

    1

For educational purposes, the wind rose is often studied atLessons in local history and geography, as well as in construction universities and technical schools. It is not difficult to build a simple wind rose for a specific locality. This task is often performed by schoolchildren of grades 6-9.

    2

In order to build a rose on your ownWinds will need data on the daily direction of the wind for a month or more. This information can be obtained independently through daily observations of the weather, or you can also take in the "Weather Calendar" for the period under study.

    3

Then the basis of the diagram forOrdering of observations. To do this, draw a coordinate system in which the main axes reflect the four main directions of the world - north, east, south and west. Then, through the center of coordinates, draw additional two axes and mark on them the intermediate sides of the light: north-east, south-east, north-west and south-west. On each axis, postpone the uniform divisions, symbolizing the conditional number of days. If a monthly period is considered, the coordinate spans may reflect one day.

    4

After the completed preparatory work, you canGo directly to building a rose of the winds. To do this, calculate the number of days during which the wind blew in a certain direction, and set them aside on each of the axes. The number of days in each direction is marked by a period. Then, carefully connect the points obtained by straight lines to form a closed polygon. Number of windless days (calm), mark in the circle the center of the diagram. If there was no wind in any direction of the light during the period under study, the connecting line at this point should be interrupted.

    5

As a result of the work, you will receive a wind rose forYour region for the period under study. Its rays will be uneven, and the longest of them will show the prevailing direction of the winds in the area under study.

    6

A wind rose diagram can be constructed andAutomatically in Excel. To do this, create a file in which you enter in the form of a table the available data on the number of days and the direction of the winds. There should be two columns: with the names of the directions of the world and with the number of windy days. Then in the "Paste" - "Diagram" menu, select the "Pie chart" item and follow the tips of the charting wizard. As a result, you will get a graphical representation of the wind rose.

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