global winds and local winds

Introduction to windsWhat are winds
How are winds classified Types of global windsThe coriolis force
What are land and sea breezes
Valley breeze ad mountain breeze
How are winds measured
Important wind words



Wind measurement

Winds come in all directions or speeds. They are measured by their directions and speeds.

Depending on the cause of the winds, they can blow in many directions. Some good examples of wind direction are the Easterly winds, which blow from east to west, and westerly winds that blow from west to east. There are also winds that blow from the north, southwards and also those from the south blowing northwards.

Wind fact
Anemometers measure the direction of winds. They come in different models but use a similar principle — cups on a bar! It simply works like this: the faster the wind, the faster the cups rotate. The speed of the rotating cups is measured by a speedometer.

how to measure wind direction

Wind fact
The Weather Vane
Another instrument in wind measurement is the wind vane. It involves a pointer mounted on a vertical shaft. When the wind blows, the arm sways until the pointer faces the direction of the wind.

These days, there is some really cool technology that meteorologists use to measure air pressure, speeds and direction. But traditionally, there is an instrument called a Barometer, which is made up of mercury (a special liquid metal) with some reading on it. Simple, the mercury is pushed up when air pressure increases.
The reading is recorded in inches of mercury (Hg) and they are converted to millibars (mb) as the data is recorded on maps and other records.

Wind factTry this!
Measuring the direction of winds is not hard, even for local winds. Blowing bubbles can easily give you a hint on the direction of the wind.

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how is wind created