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Meteorology > Meteorology Definitions > Flashcards

Meteorology Definitions Flashcards

1
Q

Air Gas Distribution

A

78% Nitrogen, 21% Oxygen, 1% Other Gasses

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2
Q

Isothermic

A

Temperature is constant while height increases

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3
Q

Temperature

A

Average kinetic energy of the atoms or molecules in a substance

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4
Q

Radiosonde

A

Weather baloon. Floats up to 35km and transmits data every 1.3 seconds. Contains information on temperature, pressure and humidity

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5
Q

Insolation

A

Shortwave radiation from the sun heating the earths surface

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6
Q

Diernal

A

Daily change in temperature

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7
Q

Intertropical Convergence Zone

A

Location of maximum heating

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8
Q

Functions of the Ozone Layer

A

Absorption, Reflection, Scattering

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9
Q

Stevenson Screen

A

Temperature recording device measuring surface temperature and humidity, located 1.2m above ground level

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10
Q

Radiation

A

The transmission of energy

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11
Q

Long wave radiation

A

Cooler object, less intense radiation

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12
Q

Short wave radiation

A

Hotter object, more intense radiation

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13
Q

Terrestrial radiation

A

Radiation emitted from the earths surface

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14
Q

Albedo

A

Surface reflectivity

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15
Q

Conduction

A

Energy transfer through contact

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16
Q

Convection

A

Energy transfer through vertical air movement

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17
Q

Advection

A

Energy tranfer through horizontal air movement

18
Q

Radiation

A

Energy transfer through emission and absorption of long wave radiation

19
Q

Turbulence

A

Energy transfer through mixing of air

20
Q

Latent heat

A

Energy released or absorbed when an element changes state

21
Q

Inversion

A

Temperature increasing with height

22
Q

Ground inversion - Conduction

A

Energy released from the earths surface, warming surrounding air

23
Q

Ground Inversion - Advection

A

Movement of warmer air from the sea over land, sliding under a layer of cool air

24
Q

Valley ivnersion

A

Conduction warming up air which then slides down a valley, pooling at the bottom

25
Q

Frontal Inversion

A

Cold front moving over a warm area of air

26
Q

Aloft inversion

A

Found in subsiding air (anticyclone) compressing the air at the bottom warming it up

27
Q

Windshear

A

Change in winds speed or direction over a vertical or horizontal axis

28
Q

Pressure

A

Weight of air molecules above pushing down

29
Q

Aneroid Capsule

A

Compressible sealed capsule used for measuring air pressure, connected to a series of gears to display on a dial

30
Q

Isobars

A

Lines that join areas of equal sea level pressure

31
Q

Col

A

An area found on a surface pressure chart between two high pressure areas, and otherwise surrounded by low pressure

32
Q

Ridge

A

Extension of a high pressure area. Fair weather

33
Q

Trough

A

Extension of a low pressure area, cloudy showery weather

34
Q

PGF - Pressure gradient force

A

Strength pushing air from a high pressure area to a low pressure area

35
Q

QFE

A

Atmospheric pressure at aerodrome elevation

36
Q

ANH

A

Atmpspheric pressure at mean sea level assuming ISA condition

37
Q

Density

A

The mass of the molecules in a given volume

38
Q

Anticyclone

A

Area of high pressure

39
Q

Depression

A

Area of low pressure

40
Q

Divergence

A

Air flow moving away from eachother

41
Q

Convergence

A

Airflow moving towards eachother

Meteorology (1 decks)

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