Master feedback Flashcards
Mountain waves create rotors in the air, the height of which when compared to the mountain top means that the centre of the first rotor is usually
at the same height or just below the top of the mountain on the leeward side.
What statement is correct concerning the core o the polar front
It lies at a height where there is no horizontal temperature gradient; the slope of the pressure surfaces at the height of the core is at its maximum
To estimate the height of the top of cumuliform clouds using satellites is necessary to have:
Infrared imagery and visual imagery
Hazard of icing by freezing rain on the aerofoil of an aircraft is
Potential accretion of ice aft of the ice protection equipment.
A possible threat associated with the use of airborne weather radar potentially hazardous conditions is
The heavy precipitation forms a shield for the area where severe weather may exist.
Adiabatic cooling is the decrease in temperature
Of an expanding volume of air without heat exchange with its surroundings. PUEDESER
What is the expected effect when a cold and moist air mass covers a warm surface?
a. A gradual increase in air temperature.
Mixing ratio being defined as the radio of mass of water vapour per dry air can range from as:
a. Low as virtually 0g/kg in cold, continental air masses to about 25g/kg in tropical air masses.
Compared to a microburst, a macrobusrts
Affects a larger area
Saturated humidity mixing ratio is defined as the value of the mixing ratio:
At a given temperature and pressure when the air is saturated
Frontal fog will dissipate when the
Warm front has passed
To estimate the height of the top of cumuliform clouds using satellites is necessary to have:
Infrared imagery and visual imagery.
Hazard of icing by freezing rain on the aerofoil of an aircraft is:
Potential accretion of ice aft of the ice protection equipment
Mountain waves creates rotors in the air, the height of which when … the mountain top means that the centre of the first rotor is usually.
At the same height or just below the top of the mountain on the leeward side
The roaring forties winds are stronger than those encountered at the …. in the northern hemisphere. c. Wind encounter fewer landmasses.
Wind encounter fewer landmasses
A possible threat associated with the use of airborne weather radar potentially hazardous conditions is:
The heavy precipitation forms a shield for the area where severe weather may exist
Adiabatic cooling is the decrease in temperature:
a. Of an expanding volume of air without heat exchange with its surroundings. CORRECTA I
The expected vertical extent of a steam fog patch is normally:
Up to 500 feet..
What is the expected effect when a cold and moist air mass covers a warm surface?
A gradual increase in air temperature
Which of the following cloud types is most likely to form when cold moist air moves over a warm surface?
Cumulus
A wind shear event during an approach to land, the headwind component suddenly increases just before the flare. If the pilot does not take an appropriate action this could lead to?
The aircraft “ballooning” and landing beyond the touch down aiming point, increasing the possibility of runway excursion
In the absence of regular convection in the stratosphere due to warmer layers higher up and cooler one lower down makes this part of the earths atmosphere?
Generally, turbulence free
Mixing ratio being defined as the radio mass of water vapor per dry air can range from as
Low as virtually 0g/kg in cold, continental air masses to about 25g/kg in tropical air masses
When in summer calm and clear conditions exist, a station on the shore of a large body of water will experience wind
From the water in daytime and from the land at night
Given the following information what is the true height of the aerodrome: Altimeter setting 1013.2 hpa Altimeter reading: 5000ft QFE: 958 hpa QNH: 983 hpa
Answer: 3515 (1013-958)x27 = 1485 5000-1485= 3515
In the northern hemisphere a pilot flying at 1000ft agle directly towards the center of a low pressure are will find the wind blowing from
Left and behind
What is meant by QFF?
The atmospheric pressure at an aerodrome converted to mean sea level in accordance with actual conditions
Which of the following situations will be typical for the inter tropical convergence zone (ITCZ)?
Low pressure and instability
The main factor which contributes to the formation of very low clouds ahead of a warm front is the?
Saturation of the cold air by rain falling into it and evaporating
Describe the chief role of the WMO with regard to aviation meteorology :
• Establish and implement together with ICAO, a global regulatory framework for the national meteorology services.
Haze, mist fog visibility
Haze = 5000m or less
Mist = Between 1000 to 5000m
Fog = Less than 1000m
AC and AS turbulence and icing when encountering them. (All of these explanations are taken from the WMO).
AC
Turbulence = Light to moderate
Icing = light ice accretion may occur.
AS
Turbulence = Turbulence is weak and confined to the lower parts however it may be strong when there is internal convection. Icing = Is generally light
Indian monsoon where do they blow?
Remember the mnemonic. “NEver winter, SWeat summer”.
So North East in winter, South west summer.
Speed of a warm front –
10KTS
You’re in a hold at 3000ft, able to see the runway but the aircraft on final is encountering difficulties in his approach, what type of fog is this?
A- Mist and fog
B- Shallow fog
What is QNH
QFE reduced to MSL using the values of the standard atmosphere
What is QFE
Is the barometric pressure at the aerodrome reference point” or “Is the recorded surface pressure at the aerodrome”.
Also will show zero at the aerodrome reference point.
Tundra climate
Frozen soil
When taking off from an airfield in a cold air pool, on the leeside of a mountain, which of these is most accurate?
Improved performance in the first stages of departure.”
You’re taking off from a runway which is situated on the lee side of the mountain. What are you likely to encounter?
Low visibility and an inversion
What is the mixing ratio?
Express humidity as a ratio of the mass of water vapour mixed in with a mass of air”
Two flight levels 14000 and 5000, with an ISA deviation of -14, what is the separation between them?
9000 ft separation
According to the Koppen Climate Classification System what is this type of latitude. I had this in my exam back in May and was completely stumped as to what the hell the Koppen Climate Classification System is as the only Koppen I know is a nice refreshing glass of Koppenberg on a summers evening.
Anyway, the answer is along the lines of a “temperate latitude”.
