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Meteorological Instruments

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Anemometer. anemometer is a device for measuring wind speed, and is one instrument used in a ... Prop Anemometer. Helicoid propeller anemometer incorporating a ... – PowerPoint PPT presentation

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Title: Meteorological Instruments


1
Meteorological Instruments
2
Barometer
3
Barometer
  • Used to determine atmospheric pressure
  • Two Types
  • Aneroid Barometer - Expansion or contraction of
    the vacuum chamber, caused by a change in air
    pressure, forces the pointer to move.
  • Mercurial Barometer It uses a long glass tube,
    open at one end and closed at the other. Air
    pressure is measured by observing the height of
    the column of mercury in the tube.

4
Thermometer
  • is a device that measures temperature or
    temperature gradient using a variety of different
    principles

5
Hygrometer or Psychrometer
  • Hygrometers are instruments used for measuring
    relative humidity. A simple form of a hygrometer
    is specifically known as a "psychrometer" and
    consists of two thermometers .
  • Relative humidity is a term used to describe the
    amount of water vapor that exists in a gaseous
    mixture of air and water.

6
Anemometer
  • anemometer is a device for measuring wind speed,
    and is one instrument used in a weather station.

7
Wind Vane
  • A weather vane, also called a wind vane, is a
    movable device attached to an elevated object
    such as a roof for showing the direction of the
    wind. Very often these are in the shape of
    cockerels and are called weather cocks. Arrows
    are also popular, but a multitude of designs have
    been used.

8
Prop Anemometer
  • Helicoid propeller anemometer incorporating a
    wind vane for orientation.

9
Quiz
  • 1._____ Used to determine atmospheric pressure.
  • 2._____ is a movable device attached to an
    elevated object such as a roof for showing the
    direction of the wind.
  • 3._____ is a device for measuring wind speed

10
Quiz
  • 4._____ are instruments used for measuring
    relative humidity.
  • 5._____ is a device that measures temperature or
    temperature gradient using a variety of different
    principles
  • 6._____7._____Two(2) types of barometer.
  • 8._____is a term used to describe the amount of
    water vapor that exists in a gaseous mixture of
    air and water.

11
Identify the following pictures
  • 9.

12
Identify the following pictures
  • 10.
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