Cartes mémoires 050 Meteo

Cartes-fiches	92
Langue	Deutsch
Catégorie	Technique
Niveau	Université
Crée / Actualisé	30.05.2025 / 09.06.2025
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Refer to TAF: EGGB 2618/2718 28015G25KT 9999 SCT025 TEMPO 2618/2622 29018G35KT 5000 SHRASN BKN010CB PROB30 TEMPO 2618/2621 1500 TSGR BKN008CB BECMG 2621/2624 26010KT. What will the visibility at 2055Z in Birmingham (EGGB) be?

Not less than 1.5 km but could be in excess of 10 km

More than 10 km

A maximum 5 km

A minimum of 1.5 km and a maximum of 5 km

Not less than 1.5 km but could be in excess of 10 km

More than 10 km

A maximum 5 km

A minimum of 1.5 km and a maximum of 5 km

Flight Shannon to London. What is forecasted for the eastern sector of the route between Shannon and London at FL220?

Overcast nimbo layered cumulonimbus

Moderate or severe turbulence and icing

Scattered towering cumulus

Scattered castellanus

Overcast nimbo layered cumulonimbus

Moderate or severe turbulence and icing

Scattered towering cumulus

Scattered castellanus

A Foehn wind occurs on the:

Leeward side of a mountain range and is caused by the condensation level being lower on the leeward side

Windward side of a mountain range and is caused by surface cooling and reverse air flow

Windward side of a mountain range and is caused by surface heating

Leeward side of a mountain range and is caused by significant moisture loss by precipitation from cloud

Leeward side of a mountain range and is caused by the condensation level being lower on the leeward side

Windward side of a mountain range and is caused by surface cooling and reverse air flow

Windward side of a mountain range and is caused by surface heating

Leeward side of a mountain range and is caused by significant moisture loss by precipitation from cloud

A gustfront is:

Formed by the cold air outflow from a thunderstorm

Another name for a cold front

Characterized by heavy lightning

Normally encountered directly below a thunderstorm

Formed by the cold air outflow from a thunderstorm

Another name for a cold front

Characterized by heavy lightning

Normally encountered directly below a thunderstorm

The QFF at an airfield in California located 69 metres below sea level is 1030 hPa. The air temperature is 10°C lower than a standard atmosphere. What is the QNH?

It is not possible to give a definitive answer

1030 hPa

Less than 1030 hPa

More than 1030 hPa

It is not possible to give a definitive answer

1030 hPa

Less than 1030 hPa

More than 1030 hPa

In the troposphere the decrease of pressure per 100 m increase in height:

Is smaller at higher levels than at lower levels

Is greater at higher levels than at lower levels

Remains constant at all levels

Is in the order of 27 hPa near MSL

Is smaller at higher levels than at lower levels

Is greater at higher levels than at lower levels

Remains constant at all levels

Is in the order of 27 hPa near MSL

How are well separated CB clouds described on the Significant Weather Chart?

EMBD CB

OCNL CB

ISOL CB

FREQ CB

EMBD CB

OCNL CB

ISOL CB

FREQ CB

Under what condition does pressure altitude have the same value as density altitude?

At standard temperature

At sea level when the temperature is 0°C

When the altimeter has no position error

When the altimeter setting is 1013.2 hPa

At standard temperature

At sea level when the temperature is 0°C

When the altimeter has no position error

When the altimeter setting is 1013.2 hPa

How would you characterise an air temperature of -55°C at the 200 hPa level over western Europe?

Within +/-5°C of ISA

Low

High

Very high

Within +/-5°C of ISA

Low

High

Very high

Which of the following conditions is most likely to lead to the formation of advection fog?

Moist cold air moving over a warm surface

Dry cold air moving over a warm surface

Dry warm air moving over a cold surface

Moist warm air moving over a cold surface

Moist cold air moving over a warm surface

Dry cold air moving over a warm surface

Dry warm air moving over a cold surface

Moist warm air moving over a cold surface

If a saturated air mass descends down a slope its temperature increases at:

A lower rate than in dry air, as evaporation absorbs heat

The same rate as if the air mass were dry

A lower rate than in dry air, as condensation gives out heat

A higher rate than in dry air, as it gives up latent evaporation heat

A lower rate than in dry air, as evaporation absorbs heat

The same rate as if the air mass were dry

A lower rate than in dry air, as condensation gives out heat

A higher rate than in dry air, as it gives up latent evaporation heat

A trough of low pressure on a surface synoptic chart...

Is an area of convergence and widespread ascent

Leads to descending air masses

Is a narrow band of ascent

Is an area of divergence and widespread ascent

Is an area of convergence and widespread ascent

Leads to descending air masses

Is a narrow band of ascent

Is an area of divergence and widespread ascent

The DALR is greater than the SALR because...

Saturated vapour pressure increases with increasing temperature

None is correct

Of the release of latent heat of evaporation

The rate of cooling of saturated air is reduced by the release of latent heat of condensation

Saturated vapour pressure increases with increasing temperature

None is correct

Of the release of latent heat of evaporation

The rate of cooling of saturated air is reduced by the release of latent heat of condensation

Which of the following weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"?

00000KT 0100 FG VV001 11/11 Q1025 BECMG 0500 =

26012KT 8000 SHRA BKN025 16/12 Q1018 NOSIG =

34004KT 7000 MIFG SCT260 09/08 Q1029 BECMG 1600 =

27019G37KT 9999 BKN050 18/14 Q1016 NOSIG =

00000KT 0100 FG VV001 11/11 Q1025 BECMG 0500 =

26012KT 8000 SHRA BKN025 16/12 Q1018 NOSIG =

34004KT 7000 MIFG SCT260 09/08 Q1029 BECMG 1600 =

27019G37KT 9999 BKN050 18/14 Q1016 NOSIG =

Which is true of a typical non-frontal thermal depression? It forms over...

Land in winter

Land in summer

The ocean in winter

The ocean in summer

Land in winter

Land in summer

The ocean in winter

The ocean in summer

In a low pressure system the convergence at the surface is caused by...

frictional forces

the imbalance of the horizontal gradient force and the Coriolis force

the curvature of the isobars

centripetal forces

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

frictional forces

the imbalance of the horizontal gradient force and the Coriolis force

the curvature of the isobars

centripetal forces

When do cold occlusions occur most frequently in Europe?

Summer

Winter

Winter and spring

Autumn and winter

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

Summer

Winter

Winter and spring

Autumn and winter

At what time of the year are tornadoes most likely to occur in North America?

Summer, autumn

Spring, summer

Winter

Autumn, winter

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

Summer, autumn

Spring, summer

Winter

Autumn, winter

Aeroplane struck by lightning may sometimes get considerable damage and at least temporarily the manoeuvring of the aeroplane will be made more difficult. Which one of the following statements is correct?

An aircraft has in the atmosphere the same qualities as a "Faradays cage", which means that struck of lightning seldom occurs. But if it happens, the result will be an occasional engine failure. The crew may get a shock.

An aircraft made by metal has a certain capacity to attract a lightning, but the lightning will follow the surface and therefore no damage will be caused.

Aircraft made by composite material may get severe damage, the crew may be blinded and temporarily lose the hearing.

Aircraft made by composite material can´t conduct a lightning and will therefore very seldom be struck.

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

An aircraft has in the atmosphere the same qualities as a "Faradays cage", which means that struck of lightning seldom occurs. But if it happens, the result will be an occasional engine failure. The crew may get a shock.

An aircraft made by metal has a certain capacity to attract a lightning, but the lightning will follow the surface and therefore no damage will be caused.

Aircraft made by composite material may get severe damage, the crew may be blinded and temporarily lose the hearing.

Aircraft made by composite material can´t conduct a lightning and will therefore very seldom be struck.

What is a signal of the beginning of the mature stage of a thunderstorm?

The start of precipitation

Continuous updrafts

CB cloud stops growing vertically

The appearance of an anvil top

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

The start of precipitation

Continuous updrafts

CB cloud stops growing vertically

The appearance of an anvil top

How do you recognize a cold air drop?

A cold air drop may be recognized on the surface chart as a high pressure area.

As a high pressure area aloft (e.g. on the 500 hPa chart).

As a low pressure area aloft (e.g. on the 500 hPa chart).

A cold air drop may be recognized on the surface chart as a low pressure area.

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

A cold air drop may be recognized on the surface chart as a high pressure area.

As a high pressure area aloft (e.g. on the 500 hPa chart).

As a low pressure area aloft (e.g. on the 500 hPa chart).

A cold air drop may be recognized on the surface chart as a low pressure area.

A microburst...

has a life time of more than 30 minutes.

occurs mainly in winter in the mid-latitudes.

has a diameter up to 4 km.

occurs only in tropical areas.

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

has a life time of more than 30 minutes.

occurs mainly in winter in the mid-latitudes.

has a diameter up to 4 km.

occurs only in tropical areas.

In which stage of the life cycle of a single thunderstorm cell occur both up- and downdrafts simultaneously?

Dissipating stage

Cumulus stage

Mature stage

In all stages

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

Dissipating stage

Cumulus stage

Mature stage

In all stages

Which form of precipitation from clouds containing only water is most likely to fall in mid-latitudes?

Drizzle

Moderate rain with large drops

Hail

Heavy rain with large drops

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

Drizzle

Moderate rain with large drops

Hail

Heavy rain with large drops

Which of the following cloud types are most likely to produce light to moderate icing when they are not subject to orographic lifting and consist of supercooled cloud droplets?

Stratocumulus and cirrostratus

Altostratus and cirrocumulus

Stratus and cumulonimbus

Altocumulus and altostratus

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

Stratocumulus and cirrostratus

Altostratus and cirrocumulus

Stratus and cumulonimbus

Altocumulus and altostratus

Frontal waves normally form on...

slow moving cold fronts and stationary fronts

slow moving warm fronts and occluding fronts

rapidly moving cold fronts or warm fronts

warm fronts

slow moving cold fronts and stationary fronts

slow moving warm fronts and occluding fronts

rapidly moving cold fronts or warm fronts

warm fronts

An aeroplane is flying in the southern hemisphere at low altitude (less than 2'000 feet) and going directly away from a centre of low pressure. What direction, relative to the aeroplane, does the wind come from?

left and slightly on the tail

right and slightly on the tail

right and slightly on the nose

left and slightly on the nose

left and slightly on the tail

right and slightly on the tail

right and slightly on the nose

left and slightly on the nose

Divergence in the upper air results, near the surface, in...

Rising pressure and likely formation of clouds

Falling pressure and likely dissipation of clouds

Falling pressure and likely formation of clouds

Rising pressure and likely dissipation of clouds

Rising pressure and likely formation of clouds

Falling pressure and likely dissipation of clouds

Falling pressure and likely formation of clouds

Rising pressure and likely dissipation of clouds

What is the associated weather with the center of a cold air drop over land in summer?

Strong westerly winds

Nothing (CAVOK)

Showers and thunderstorms

Continuous drizzle

Strong westerly winds

Nothing (CAVOK)

Showers and thunderstorms

Continuous drizzle

Over Central Europe what type of cloud cover is typical of the warm sector of a depression during winter?

CI, CS

CU, CB

Fair weather CU

ST with drizzle

CI, CS

CU, CB

Fair weather CU

ST with drizzle

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