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What cloud name means “rain bearing”?
The surface wind at midnight at an airfield in the centre of England in summer is 270/14kts. What would you expect the wind to be at 2000ft?
A flight is to be made to an airfield at elevation of 250’ AMSL. The QNH of a nearby airfield is 1020hPa. What would be the calculated QFE for the destination airport? (1hPa = 30ft)
What is the gas composition of “air”?
Weather phenomena are most common to be found in which atmospheric layer?
What is the mass of a “cube of air” with the edges 1 m long, at MSL according ISA?
At what rate does the temperature change with increasing height according to ISA (ICAO Standard Atmosphere) within the troposphere?
What is the mean height of the tropopause according to ISA (ICAO Standard Atmosphere)?
The term “tropopause” is defined as…
Temperatures will be given by meteorological aviation services in Europe in which unit?
What is meant by “inversion layer”?
What is meant by “isothermal layer”?
The temperature lapse rate with increasing height within the troposphere according ISA is…
Which process may result in an inversion layer at about 5000 ft (1500 m) height?
What danger arises for a helicopter during flight through a ground inversion in winter?
An inversion layer close to the ground can be caused by…
What is the ISA standard pressure at FL 180 (5500 m)?
The pressure which is measured at a ground station and reduced to mean sea level (MSL) by means of the actual atmospheric conditions is called…
How do air density and flight performance change with decreasing temperature (at constant pressure)?
Which processes result in decreasing air density?
The pressure at MSL in ISA conditions is…
The height of the tropopause of the International Standard Atmosphere (ISA) is at…
The barometric altimeter indicates height above…
The altimeter can be checked on the ground by setting…
The barometric altimeter with QFE setting indicates…
The barometric altimeter with QNH setting indicates…
Given the following information, what is the true altitude? (rounded to the nearest 50 ft)
How can wind speed and wind direction be derived from surface weather charts?
Which force causes “wind”?
Above the friction layer, with a prevailing pressure gradient, the wind direction is…
Which of the stated surfaces will reduce the wind speed most due to ground friction?
The movement of air flowing together is called…
The movement of air flowing apart is called…
What weather development will result from convergence at ground level?
When air masses meet each other head on, how is this referred to and what air movements will follow?
What are the air masses that Central Europe is mainly influenced by?
With regard to global circulation within the atmosphere, where does polar cold air meets subtropical warm air?
Winds blowing uphill are defined as…
Winds blowing downhill are defined as…
Air descending behind a mountain range is defined as…
“Foehn” conditions usually develop with…
What type of turbulence is typically found close to the ground on the lee side during Foehn conditions?
Light turbulence always has to be expected…
Moderate to severe turbulence has to be expected…
Which answer contains every state of water found in the atmosphere?
How do dew point and relative humidity change with decreasing temperature?
How do spread and relative humidity change with increasing temperature?
The “spread” is defined as…
With other factors remaining constant, decreasing temperature results in…
What process causes latent heat being released into the upper troposphere?
The saturated adiabatic lapse rate is…
The dry adiabatic lapse rate has a value of…
The saturated adiabatic lapse rate should be assumed with a mean value of:
What weather conditions may be expected during conditionally unstable conditions?
Which conditions are likely for the formation of advection fog?
Clouds are basically distinguished by what types?
Clouds in high layers are referred to as…
What weather phenomenon designated by “2” has to be expected on the lee side during “Foehn” conditions? See figure (MET-001).
What cloud type does the picture show? See figure (MET-002).
What cloud type does the picture show? See figure (MET-004).
What factor may affect the top of cumulus clouds?
What factors may indicate a tendency to fog formation?
What condition may prevent the formation of “radiation fog”?
What process results in the formation of “advection fog”?
What type of fog emerges if humid and almost saturated air, is forced to rise upslope of hills or shallow mountains by the prevailling wind?
What process results in the formation of “orographic fog” (“hill fog”)?
What situation is called “over-development” in a weather report?
What factors are required for the formation of precipitation in clouds?
The formation of medium to large precipitation particles requires…
Which type of cloud is associated with prolonged rain?
Regarding the type of cloud, precipitation is classified as…
How is an air mass described when moving to Central Europe via the Russian continent during winter?
The character of an air mass is given by what properties?
The front shown in the picture is a / an… See figure (MET-005)
The front shown in the picture is a / an… See figure (MET-006)
The front shown in the picture is a / an… See figure (MET-009)
What cloud sequence can typically be observed during the passage of a warm front?
What clouds and weather can typically be observed during the passage of a cold front?
What visual flight conditions can be expected within the warm sector of a polar front low during summer time?
What visual flight conditions can be expected after the passage of a cold front?
An occlusion line is formed by succeeding…
A boundary between a cold polar air mass and a warm subtropical air mass showing no horizontal displacement is called…
What is the usual direction of movement of a polar front low?
What pressure pattern can be observed during the passage of a polar front low?
What pressure pattern can be observed when a cold front is passing?
What change of wind direction can be expected during the passage of a polar front low in Central Europe?
Extensive high pressure areas can be found throughout the year …
What cloud type can typically be observed across widespread high pressure areas during summer?
What weather phenomena have to be expected around a trough?
What frontal line divides subtropical air from polar cold air, in particular across Central Europe?
What weather conditions can be expected in high pressure areas during summer?
What weather conditions in Central Europe are typically found in high pressure areas during summer?
What weather conditions can be expected in high pressure areas during winter?
What wind conditions can be expected in areas showing large distances between isobars?
What weather conditions can be expected during “Foehn” on the windward side of a mountain range?
Which of the stated wind phenomena will increase in speed since its path is narrowed by mountains?
What is the name of the the cold, katabatic wind phenomena blowing from northeast into the Adriatic Sea?
Which of the following conditions are most favourable for ice accretion?
What temperatures are most dangerous with respect to airframe icing?
Which type of ice forms by very small water droplets and ice crystals hitting the front surfaces of an aircraft?
Which type of ice forms by large, supercooled droplets hitting the front surfaces of an aircraft?
What situation may result in the occurrence of severe wind shear?
What conditions are favourable for the formation of thunderstorms?
What conditions are mandatory for the formation of thermal thunderstorms?
With regard to thunderstorms, strong up- and downdrafts appear during the…
Which stage of a thunderstorm is dominated by updrafts?
What danger is most immenent when an aircraft is hit by lightning?
Heavy downdrafts and strong wind shear close to the ground can be expected…
What phenomenon is caused by cold air downdrafts with precipitation from a fully developed thunderstorm cloud?
What has to be considered when taking off in a ground inversion?
What clouds and weather may result from an humid and instable air mass, that is pushed against a chain of mountains by the predominant wind and forced to rise?
What danger is most imminent during an approach to an airfield situated in a valley, with strong wind aloft blowing perpendicular to the mountain ridge?
What kind of reduction in visibility is not very sensitive to changes in temperature?
Information about pressure patterns and frontal situation can be found in which chart?
Which weather chart shows the actual air pressure at MSL along with pressure centers and fronts?
What observational technique allows the collection of temperature and dewpoint data throughout the troposphere?
What information can be obtained from satallite images?
What chart shows areas of precipitation?
What information is NOT found on Low-Level Significant Weather Charts (LLSWC/Form 215)?
Measured pressure distribution in MSL and corresponding frontal systems are displayed by the…
In a METAR, “heavy rain” is designated by the identifier…
In a METAR, “(moderate) showers of rain” are designated by the identifier…
What information can be found in the ATIS, but not in a METAR?
Weather and operational information about the destination aerodrome can be obtained during the flight by…
SIGMET warnings are issued for…
Weather information about various aerodromes can be obtained in flight by…
Referring to Figure M1 from the Met Office UK radar observation charts, what do the coloured areas over Ireland indicate?
Referring to Figure M2 from the Met Office UK, what is the visible satellite image indicating?
Referring to Figure M3 from the Met Office UK, what do the grey areas on the infrared satellite image indicate?
Referring to Figure M4 from the Met Office UK, what are the arrows indicating on the chart?
Referring to Figure M5, what does the blue line indicate?
Referring to Figure M6, the F215 UK low level weather forecast, what cloud is expected in area A?
Referring to Figure M7, the F214 UK forecast chart, what is the 5000′ wind at 55N 0230W?