Measuring Lower-Atmospheric Conditions
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Transcript Measuring Lower-Atmospheric Conditions
Measuring
Lower and
Upper
Atmospheric
Conditions
By: Ashley Noah
Measuring
LowerAtmospheric
Conditions
Air Temperature
instrument
that measures and indicates
temperature is called a thermometer.
When the temperature rises it causes the
liquid to expand and rise in the tube.
Electrical thermometer-the electric
current that flows through the material
which is translated into temperature
readings.
Air Pressure
Changes
in air pressure affect air masses
Barometers measure atmospheric
pressure
A drop in air pressure usually is indicated
by a front approaching.
Wind Speed
Anemometer
measures wind speed
Anemometer is usually consists of small
cups that are attached by spokes to a
shaft that rotates freely
The anemometer works by when the wind
pushes against the cups and causes them
to rotate.
Wind Direction
Wind
Vane determines the direction of
wind
Wind Vane is commonly an arrow-shaped
instrument that turns freely on a pole as
the tail catches the wind.
Wind direction can be described by using
compass directions or by degrees
Measuring
UpperAtmospheric
Conditions
Radiosonde
Radiosonde
is an instrument package
that is carried high into the atmosphere
by weather balloon to measure humidity,
air pressure and air temperature
Radiosonde sends measurements as radio
waves to a receiver that records the
information.
Radar
Radar-instrument
for determining weather
conditions in the atmosphere
Radar stands for Radio Detection And
Ranging
Uses radio waves to determine velocity
and location of objects
Weather Satellites
Weather
satellites collect important
information about the atmosphere
The direction and speed of the wind at
the level of the clouds can be measured
by examining a continuous sequence of
cloud images
Computers
Meteorologists
use supercomputers to
figure out the weather or by solving the
math equations that describe the
behavior of the atmosphere
Data can provide information that is
useful in forecasting weather changes
Computers may greatly improve weather
forecasts