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How can we measure the weather?

The science of studying weather is called meteorology. Weather scientists
or meteorologists measure temperature, rainfall, air pressure, humidity (the
amount of moisture in the air), sunshine and cloudiness, and they make
predictions and forecasts about what the weather will do in the future. This…

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Sonic anemometer ­ Wind Speed

Sonic anemometers, first developed in the 1970s,
use ultrasonic sound waves to measure wind speed and direction. They
measure wind velocity based on the time of flight of sonic pulses between
pairs of transducers. Measurements from two or three pairs of transducers
can be combined…

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Daily rainfall amounts in the UK range from zero to (very rarely) 100 mm,
but are most frequently in the range 0 to 10 mm. If it is warm with bright
sunshine, dry air and a strong wind, it is possible to evaporate away 10 mm
of water in a…

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temperature rises (or falls). A normal diurnal range may be from 95%
around dawn to about 60% in the afternoon. Values below 40% are unusual,
and only rarely do they fall below 10% in this country. In fact, values of
10% are generally common over deserts during the day.


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Hair hygrographs are meteorologists use a method that involves reading a
pair of thermometers known as a 'wet- and dry-bulb psychrometer'. The
dry bulb is a glass thermometer that registers the actual air temperature.
The wet bulb is a similar thermometer but with the bulb enclosed in a
muslin bag…

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such as temperature, humidity, wind speed and direction from high in the

Water-based barometers

This concept of "decreasing atmospheric pressure predicts stormy
weather" was invented by Lucien Vidie and is the basis for a basic weather
prediction device called a weather glass or thunder glass. It can also be…


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