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Meteorology > Met Services > Flashcards

Met Services Flashcards

1
Q

What is the WAFS?

A

World Area Forecast System

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2
Q

What is the SADIS?

A

Satellite Distribution System

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3
Q

What is the MWO?

A

Meteorological Watch Office

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4
Q

What is the RAFC?

A

Regional Area Forecast Centre

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5
Q

What is the WAFC?

A

World Area Forecast Centre

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6
Q

What is the VAAC?

A

Volcanic Ash Advisory Centre

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7
Q

What are the types of Aerodrome Weather Reports?

A

Meteorological Aerodrome Report (METAR)
Special Report (SPECI)
Terminal Aerodrome Forecast (TAF)
Aerodrome Warnings
Wind Shear Warnings

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8
Q

What is a METAR?

A

A report of actual weather conditions at a
particular aerodrome at a specified time

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9
Q

How often are METARs completed?

A

Usually each hour or half hour

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10
Q

What does a METAR include?

A

Surface Wind
Surface Visibility (inc RVR)
Any Weather
Cloud
Air Temperature/Dewpoint
QNH
Remarks

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11
Q

What is a SPECI?

A

An amendment to a METAR that is designed to draw attention to an improvement or deterioration of a condition that might significantly affect aircraft operations.

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12
Q

In what non-weather related event is a SPECI required?

A

Following an aircraft accident

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13
Q

What is a TAF?

A

A concise statement of expected meteorological conditions at an aerodrome during a specified period.

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14
Q

How often are TAFs produced?

A

Every 3 hours for a 9 hour TAF
Every 6 hours for 24/30 hour TAFs

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15
Q

What are Trends?

A

Added to METARs at selected aerodromes to indicate significant expected changes over next 2 hours

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16
Q

What type of warnings are given to aerodromes?

A

Gales / Strong wind warning
Squalls
Thunderstorm
Hail
Fog
Frost / Snow
Freezing precipitation

17
Q

How long do weather warnings remain in force for at aerodromes?

A

Remain in force for validity period stated.

18
Q

When should windshear reports stop being given out?

A

When aircraft reports indicate that windshear no longer exists

19
Q

What is LLWSAS?

A

Low Level Wind Shear Alerting System

20
Q

Where are the international standards of meteorology set?

A

World Meteorological Office (WMO)

21
Q

How long is a SIGMET valid for?

A

4 hours

22
Q

What are SIGMETs promulgated for?

A

Active Thunderstorm
Freezing Rain
Severe Turbulence
Severe Mountain Waves
Tropical Cyclone
Heavy Hail
Severe Icing
Volcanic Ash Cloud
Heavy Dust/Sandstorms

23
Q

Which weather phenomena is considered relevant to cruising aircraft?

A

Moderate or Severe Turbulence
Cumulonimbus clouds
Hail
Volcanic Ash

24
Q

What does ATIS stand for?

A

Automatic Terminal Information Service

25
Q

What is included in an ATIS broadcast?

A

Aerodrome Status
Current Weather
ATIS Information Code

26
Q

What does AMHS stand for?

A

Automated Message Handling Service

Meteorology (15 decks)

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