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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).

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Meteorology1. At a certain position, the temperature on the 300 hPa chart is -48C; according to the tropopause chart, the tropopause is at FL 330. What is the most likely temperature at FL 350 ?A. B. C. D. -58C. -56,5C. -50C. -54C.

2. Which FL corresponds with the 200 hPa pressure level ?A. B. C. D. FL 390. FL 100. FL 300. FL 50.

3. What is the approximate vertical interval which is equal to a pressure change of 1 hPa at an altitude of 5500 m ?A. B. C. D. 64 m (210 FT). 8 m (27 FT). 32 m (105 FT). 15 m (50 FT).

4. In order to calculate QFE from QNH, which of the following must be known ?A. B. C. D. Temperature at the airfield. Elevation of the airfield. Elevation and the temperature at the airfield. Elevation of the airfield and the temperature at MSL.

5. What is the dry adiabatic lapse rate ?A. B. C. D. 3.0C/1000 FT 3.5C/1000 FT 2.0C/1000 FT 1.5C/1000 FT

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).6. A layer is conditionally unstable if the airA. B. C. D. is unstable for saturated air as well as for dry air. is unstable for saturated air and stable for dry air. is stable for saturated air and unstable for dry air. becomes stable by lifting it.

7. A parcel of unsaturated air is lifted to just below the condensation level and then returned to its original level. What is the final temperature of the parcel of air?A. B. C. D. Lower than the starting temperature. The same as the starting temperature. Higher than the starting temperature. It depends upon the QFE.

8. What is the effect of a strong low level inversion ?A. B. C. D. It promotes extensive vertical movement of air. It results in good visual conditions near the surface. It promotes vertical wind shear. It prevents vertical wind shear.

9. The temperature at FL 140 is -12C. What will the temperature be at FL 110 if the ICAO standard lapse rate is applied ?A. B. C. D. -6C. -9C. -18C. -15C.

10. If atmospheric conditions exist such that the temperature deviation is ISA +10C in the lower troposphere up to 18000 FT, what is the actual layer thickness between FL 60 and FL 120 ?A. B. C. D. 5760 FT. 6240 FT. 6000 FT. 5900 FT.

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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).11. Which of the following is a common cause of ground or surface temperature inversion ?A. B. C. D. Terrestrial radiation on a clear night with no or very light winds. Heating of the air by subsidence Warm air being lifted rapidly aloft, in the vicinity of mountainous terrain. The movement of warm air under cold air.

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12. How does the height of the tropopause normally vary with latitude in the northern hemisphere ?A. B. C. D. It increases from south to north. It remains constant throughout the year. It remains constant from north to south. It decreases from south to north.

13. What, approximately, is the average height of the tropopause over the equator ?A. B. C. D. 11 km 40 km 8 km 16 km

14. In which layer is most of the atmospheric humidity concentrated ?A. B. C. D. Stratosphere. Tropopause. Stratopause. Troposphere.

15. At FL 180, the air temperature is -35C.The air density at this level is:A. B. C. D. Less than the density of the ISA at FL 180. Unable to be determined without knowing the QNH. Equal to the density of the ISA at FL 180. Greater than the density of the ISA at FL 180.

16. Under what condition does pressure altitude have the same value as density altitude ?A. the DEMO VERSION setting is 1013.2 Changed withWhen the altimeterthe temperature is hPa. of CAD-KAS PDF-Editor (http://www.cadkas.com). B. At sea level when 0C. C. At standard temperature. D. When the altimeter has no position error.

17. In the troposphere the decrease in pressure per 100 m increase in height isA. B. C. D. larger in the higher layers than in the lower layers in the order of 27 hPa per 100 m in the friction layer larger in the lower layers than in the higher layers always larger in a high pressure area than in a low pressure area

18. In temperate latitudes what weather conditions may be expected over land during the summer in the centre of a stationary high pressure zone ?A. B. C. D. Calm winds, haze. NS. CB, TS. TS, SH.

19. At what time of the year, are the paths of north Atlantic lows moving from west to east generally at their most southerly position?A. B. C. D. Autumn. Winter. Summer. Spring.

20. What is the relationship between visibility and RVR in homogeneous fog?A. B. C. D. The visibility is generally less than the RVR. The visibility generally is the same as the RVR. There is no specific relationship between the two. The visibility generally is greater than the RVR.

21. The wind indicator for a weather observation receives the measured value from an anemometer. Where is this instrument placed?A. 1 m above the runway. B. On a mast 6-10 m above the runway. C. On the roof of the weather station.

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).

ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).D. Close to the station about 2 m above the ground.

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22. You are flying with an outside air temperature of -12C and a TAS of 250 kt at FL 150 through 8 oktas NS. What type and degree of icing is most probable?A. B. C. D. Over flat terrain, away from fronts, moderate to severe mixed ice. Over flat terrain, moderate hoar frost. In clouds pushed up against the mountains, moderate to severe mixed ice. In clouds pushed up against the mountains, moderate to severe clear ice.

23. You intend to carry out a VFR flight over the Alps, on a fine and hot summer day. What is the best time of day to conduct this flight?A. B. C. D. Mid-day. Early evening. Morning. Afternoon.

24. At what time of the year are tornadoes most likely to occur in North America?A. B. C. D. Summer, autumn. Autumn, winter. Spring, summer. Winter.

25. In Central Europe when is the greatest likelihood for thunderstorms due to warm updrafts?A. B. C. D. Around midnight. Early morning. Mid - afternoon. Late morning.

26. During which stage of thunderstorm development are rotor winds characterized by roll clouds most likely to occur ?A. B. C. D. Cumulus stage and mature stage. mature stage. Dissipating stage. Cumulus stage.

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).27. Where is a squall line most likely to be expected?A. B. C. D. At the surface position of a warm front. Behind a cold front. In front of a cold front occlusion at higher levels. In front of an active cold front.

28. What are squall lines?A. B. C. D. Unusual intensive cold fronts. The paths of tropical revolving storms. Bands of intensive thunderstorms. The surface weather associated with upper air troughs.

29. Which weather phenomena are typical for the northern side of the Alps with strong winds from the south (Foehn)?A. B. C. D. Icing, huge mass of clouds. Continuous precipitation, severe turbulence. Decrease in temperature, moderate to severe icing. Good visibility, turbulence.

30. What weather is prevalent in easterly waves?A. B. C. D. Frontal weather. Clear skies. Thunderstorms and rain. Continuous rain.

31. What winds and air mass characteristics are mainly associated with the winter monsoon in the monsoon regions of the Indian subcontinent?A. B. C. D. South-westerly winds carrying warm and humid air. North-easterly winds bringing dry and hazy air. North-westerly winds bringing dry and hazy air. South-easterly winds carrying warm and humid air.

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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).32. When is the RVR reported at most airports?A. B. C. D. When the RVR decreases below 2500 m. When the RVR decreases below 2000 m. When the visibility decreases below 2000 m. When the visibility decreases below 1500 m.

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33. How is the direction and speed of upper winds described in forecasts ?A. B. C. D. The direction is relative to magnetic north and the speed is in miles per hour. The direction is relative to magnetic north and the speed is in knots. The direction is relative to true north and the speed is in knots. The direction is relative to true north and the speed is in miles per hour.

34. What positions are connected by contour lines on a weather chart?A. B. C. D. Positions with the same wind velocity. Positions with the same thickness between two constant pressure levels. Positions with the same air density. Positions with the same height in a chart of constant pressure.

35. In which meteorological forecast chart is information about CAT regions found?A. B. C. D. 300 hPa chart. Significant weather chart. 500 hPa chart. 24 hour surface forecast.

36. Which of the following is typical for the passage of an active cold front in the summer ?A. B. C. D. Mainly layered clouds Mainly towering clouds Rapid increase in temperature once the front has passed Rapid drop in pressure once the front has passed

37. Examining the pictures, on which one of the tracks (dashed lines) is this cross-section to be expected?A. the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). Changed withTrack B-C B. Track A-D C. Track A-E D. Track B-D

38. Refer to the diagram. Assuming the usual direction of movement, to which position will the polar frontal wave have moved ?A. B. C. D. Position 3 Position 2 Position 1 Position 4

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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).

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Changed with the DEMOground do over a of CAD-KAS minutes? aircraft parked on the VERSION period of about ten PDF-Editor (http://www.cadkas.com).A. B. C. D. Increase rapidly. Show strong fluctuations. Apparently nothing, because any changes would be small. Decrease rapidly.

39. In a situation with a weak pressure gradient and no thunderstorms around, what will the indication of the aneroid altimeter of an

40. Under the weather conditions depicted, which of the following statements is likely to apply?A. B. C. D. Thunderstorms may occur in the summer months over Central Europe. Radiation fog is unlikely in Central Europe in the winter. Severe gradient wind likely over Central Europe. Moderate to strong Foehn in the Alps.

41. In which of these temperature bands is ice most likely to form on the aircraft's surface?A. B. C. D. 0C to -10C -20C to -35C +10C to 0C -35C to -50C

42. Which of the following statements is true regarding moderate to severe airframe icing?A. It always occurs in altostratus cloud B. It may occur in the uppermost levels of a cumulonimbus capillatus formation

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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).C. It will occur in clear-sky conditions D. It is likely to occur in nimbostratus cloud

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43. Which of the following statements is true regarding moderate to severe airframe icing?A. B. C. D. It always occurs in altostratus cloud It will occur in the anvil part of the cumulonimbus cloud It will not occur in clear-sky conditions It is unlikely to occur in nimbostratus cloud

44. In which of these cloud types can icing be virtually ruled out?A. B. C. D. CU NS SC CI

45. In which of these cloud types can icing be virtually ruled out?A. B. C. D. CU SC NS CI

46. Which of the following conditions is most likely to cause airframe icing ?A. B. C. D. +FZRA SHSN PE GR

47. The most likely reason for radiation fog to dissipate or become low stratus is:A. B. C. D. increasing surface wind speed. a low level temperature inversion. an increasingly stable atmosphere. surface cooling.

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).48. At the same latitude the geostrophic wind is greater than the gradient wind around a low pressure system with equal pressure gradient because theA. B. C. D. coriolis force is added to the pressure gradient centrifugal force is added to the pressure gradient centrifugal force opposes the pressure gradient coriolis force opposes to the centrifugal force

49. At the same latitude the geostrophic wind is less than the gradient wind around an anticyclone with equal pressure gradient because theA. B. C. D. coriolis effect opposes the centrifugal force centrifugal force opposes the pressure gradient effect of coriolis is added to friction centrifugal force is added to the pressure gradient

50. An aircraft is flying in the southern hemisphere at low altitude (less than 2000 feet) and going directly away from a centre of low pressure. What direction, relative to the aircraft, does the wind come from ?A. B. C. D. From the right and slightly on the tail From the left and slightly on the nose From the left and slightly on the tail From the right and slightly on the nose

51. What are the differences between radiation fog and advection fog ?A. B. C. D. Radiation fog forms due to night cooling and advection fog due to daytime cooling. Radiation fog forms due to surface cooling at night in a light wind. Advection fog forms when warm humid air flows over a cold surface. Radiation fog is formed by surface cooling in a calm wind. Advection fog is formed by evaporation over the sea. Radiation fog forms only on the ground, advection fog only on the sea.

52. Depressions associated with developing frontal waves can be assumed to move in the direction of the 3000 feet windA. B. C. D. at the apex of the wave in the warm sector behind the cold front ahead of the warm front

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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).53. What types of cloud will you see flying at FL 50 towards a warm front?A. B. C. D. At some 500 km from the front, groups of CB, later at some 250 km thickening AS At some 500 km AS, later CS and at some 80 km before the front CB At some 800 km CS, later AS, and at some 300 km NS until the front Mainly clear skies. At some 100 km from the front NS begins

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54. A non-occluded frontal wave passes the airport. What form of precipitation do you expect ?A. Continuous rain or snow during several hours until the warm front arrives. The precipitation stops for several hours or becomes intermittent light within the warm sector. On the arrival of the cold front, showers will occur. B. Showers during some 2 hours until the warm front arrives. Drizzle in the warm sector within 12 hours. Rain or snow on the passage of the cold front. C. Rain or snow for about 12 hours until the warm front arrives. Within the warm sector rainfall increases. On the arrival of the cold front precipitation ceases. D. Continuous rain or snow while the frontal wave passes for a period of some 24 hours.

55. What characteristic is associated with a temperature inversion ?A. B. C. D. Stability Clear ice Area of active storms Instability

56. What pressure is defined as QFE?A. B. C. D. The pressure of the altimeter The pressure reduced to sea level using actual temperatures The pressure at field elevation The pressure reduced to sea level using ISA temperatures

57. In the lower layers of the atmosphere due to friction the wind changes direction towards the low pressure area because:A. B. C. D. wind speed decreases and therefore coriolis force decreases turbulence is formed and pressure decreases turbulence is formed and pressure increases the pressure gradient increases

58. The most frequent wind direction in a valley caused by thermal effects is toward the:

Changed withmountain during daylight hours. the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). A.B. valley during daylight hours. C. valley during daylight as much as at night. D. mountain at night.

59. The isobars drawn on a surface weather chart represent lines of equal pressureA. B. C. D. reduced to sea level at height of observatory at flight level at a determined density altitude

60. What conditions are most likely to lead to the formation of hill fog?A. B. C. D. High relative humidity and an unstable air mass Humid stable air mass, wind blowing towards the hills. Precipitation which is lifted by the action of moderate winds striking the range Clear skies, calm or light winds, with relatively low humidity

61. What is the approximate composition of the dry air by volume in the troposphere ?A. B. C. D. 21 % oxygen, 78 % nitrogen, and the rest other gasses 10 % oxygen, 89 % nitrogen, and the rest other gasses 88 % oxygen, 9 % nitrogen, and the rest other gasses 50 % oxygen, 40 % nitrogen, and the rest other gasses

62. How does temperature vary with increasing altitude in the ICAO standard atmosphere below the tropopause?A. B. C. D. Remains constant At first it increases and higher up it decreases Decreases Increases

63. Which cloud type may indicate the presence of severe turbulence ?A. Altocumulus lenticularis B. Nimbostratus C. Stratocumulus

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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).D. Cirrocumulus

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64. What is the boundary layer between troposphere and stratosphere called?A. B. C. D. Ionosphere. Atmosphere. Stratosphere. Tropopause.

65. Which constant pressure altitude chart is standard for FL50?A. B. C. D. 500 hPa. 700 hPa. 850 hPa. 300 hPa.

66. An outside air temperature of -35C is measured while cruising at FL 200. What is the temperature deviation from the ISA at this level?A. B. C. D. 10C colder than ISA. 10C warmer than ISA. 5C colder than ISA. 5C warmer than ISA.

67. Convective activity over land in mid-latitudes is greatest inA. B. C. D. summer in the afternoon. winter in the afternoon. winter during the night and early morning. summer during the night and early morning.

68. Absolute instability is said to exist whenever the environmental lapse rateA. B. C. D. is between the dry and saturated adiabatic lapse rate exceeds the dry adiabatic lapse rate is less than the saturated adiabatic lapse rate is less than the dry adiabatic lapse rate

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).69. Which of the following is a possible consequence of subsidence?A. B. C. D. An inversion over a large area with haze, mist. Wide spread NS and AS clouds and intense precipitation. CB-clouds and thunderstorms over a large area. Clear air turbulence at higher altitudes .

70. The polar front is the boundary between:A. B. C. D. maritime polar air and continental polar air. arctic air and polar air. polar air and tropical air. arctic air and tropical air.

71. What does dewpoint mean?A. B. C. D. The temperature at which ice melts. The temperature at which the relative humidity and saturation vapour pressure are the same. The temperature to which a mass of air must be cooled in order to reach saturation. The freezing level (danger of icing).

72. Which of the following is the definition of relative humidity ?A. B. C. D. Ratio between the actual mixing ratio and the saturation mixing ratio X 100 Ratio between water vapour pressure and atmospheric pressure X 100 Ratio between water vapour (g) and air (kg) X 100 Ratio between air temperature and dewpoint temperature X 100

73. The relative humidity of a sample air mass is 50%. How is the relative humidity of this air mass influenced by changes of the amount of water vapour in it?A. B. C. D. It decreases with increasing water vapour. It is not influenced by changing water vapour. It increases with increasing water vapour. It is only influenced by temperature.

74. Relative humidity

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ATP Online - Meteorology Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. does not change when water vapour is added provided the temperature of the air remains constant. is not affected when air is ascending or descending. changes when water vapour is added, even though the temperature remains constant. is not affected by temperature changes of the air.

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75. How, if at all, is the relative humidity of an unsaturated air mass influenced by temperature changes?A. B. C. D. It increases with increasing temperature. It is not influenced by temperature changes. It decreases with increasing temperature. It is only influenced by the amount of water vapour.

76. How does relative humidity and the dewpoint in an unsaturated air mass change with varying temperature?A. B. C. D. When temperature increases, the relative humidity decreases, and the dewpoint remains constant. When temperature increases, the relative humidity increases, and the dewpoint decreases. When temperature decreases, the relative humidity and the dewpoint remain constant. When temperature decreases, the relative humidity decreases, and the dewpoint increases.

77. When a mass of unsaturated air descends, what effect will it have on relative humidity?A. B. C. D. It increases up to 100%, then remains stable. It decreases. It increases. It remains constant.

78. During the late afternoon an air temperature of +12C and a dew point of +5C were measured. What temperature change must at least occur during the night in order to induce saturation?A. B. C. D. It must decrease to +7C. It must decrease by 5C. It must decrease to +6C. It must decrease to +5C.

79. Which of the following changes of state is known as sublimation (in meteorology)?A. Solid direct to vapour B. Liquid direct to vapour Changed withLiquid direct to solid VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). the DEMO C. D. Solid direct to liquid

80. Clouds, fog or dew will always be formed when:A. B. C. D. temperature and dew point are nearly equal. relative humidity reaches 98%. water vapour is present. water vapour condenses.

81. Which of the following are favourable conditions for the formation of freezing rain?A. B. C. D. An isothermal layer aloft with a temperature just above 0C through which rain is falling. Water droplets falling from cold air aloft with a temperature below 0C into air with a temperature above 0C. Warm air aloft from which rain is falling into air with a temperature below 0C. Cold air aloft from which hail is falling into air that is warm.

82. Which form of precipitation from clouds containing only water is most likely to fall in mid-latitudes?A. B. C. D. Hail. Heavy rain with large drops. Moderate rain with large drops. Drizzle.

83. Which of the following zones is most likely to encounter little or no precipitation?A. B. C. D. Occlusions. The north side of the alps with a prevailing Foehn from the north. The north side of the alps with a prevailing Foehn from the south. Frontal zones.

84. Which of the following is a cause of stratus forming over flat land?A. B. C. D. Unstable air. Radiation during the night from the earth surface in moderate wind. The release of latent heat. Convection during the day.

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ATP Online - Meteorology Page 10 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).85. Which of the following processes within a layer of air may lead to the building of CU and CB clouds?A. B. C. D. Subsidence. Convection. Frontal lifting within stable layers. Radiation.

86. What are the characteristics of cumuliform clouds?A. B. C. D. Small water droplets, stability, no turbulence and extensive areas of rain. Large water droplets, stability, no turbulence, showers and mainly rime ice. Large water droplets, instability, turbulence, showers and mainly clear ice. Small water droplets, instability, turbulence, extensive areas of rain and rime ice.

87. Which of the following types of clouds are evidence of unstable air conditions?A. B. C. D. CU, CB. ST, CS. CI, SC. SC, NS.

88. Which of the following clouds are classified as medium level clouds in temperate regions ?A. B. C. D. CI, CC. SC, NS AS, AC. CS, ST.

89. Which one of the displayed cloud forms is representative of altocumulus castellanus?A. B. C. D. 4. 3. 1. 2.

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90. What is the main composition of clouds classified as "high level clouds"?A. B. C. D. Water vapour. Water droplets. Supercooled water droplets. Ice crystals.

91. A plain in Western Europe with an average elevation of 500 m (1600 FT) above sea level is covered with a uniform AC layer of cloud during the summer months. At what height above the ground is the base of this cloud to be expected?A. B. C. D. 1500 - 7000 FT above the terrain. 100 - 1500 FT above the terrain. 15000 - 25000 FT above the terrain. 7000 - 15000 FT above the terrain.

92. Which of the following clouds may extend into more than one level?A. B. C. D. Altocumulus. Nimbostratus. Stratus. Cirrus.

93. Which one of the following types of cloud is most likely to produce heavy precipitation ?A. B. C. D. ST. CS. NS. SC.

94. What characteristics will the surface winds have in an area where the isobars on the weather map are very close together?A. Strong and flowing parallel to the isobars. B. Strong and flowing somewhat across the isobars. C. Moderate and flowing parallel to the isobars.

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ATP Online - Meteorology Page 11 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).D. Very weak but gusty and flowing somewhat across the isobars.

95. Which forces are balanced with geostrophic winds?A. B. C. D. Pressure gradient force, centrifugal force, friction force. Pressure gradient force, Coriolis force. Pressure gradient force, Coriolis force, centrifugal force. Friction force, pressure gradient force, Coriolis force.

96. How does moderate turbulence affect an aircraft?A. B. C. D. Rapid and somewhat rhythmic bumpiness is experienced without appreciable changes in altitude or attitude. Changes in altitude or attitude occur but the aircraft remains in positive control at all times. Continued flight in this environment will result in structural damage. Large, abrupt changes in altitude or attitude occur but the aircraft may only be out of control momentarily.

97. Which degree of aircraft turbulence is determined by the following ICAO description? "There may be moderate changes in aircraft attitude and/or altitude but the aircraft remains in positive control at all times. Usually, small variations in air speed. Changes in accelerometer readings of 0.5 to 1.0 g at the aircraft's center of gravity. Occupants feel strain against seat belts. Loose objects move about. Food service and walking are difficult."A. B. C. D. Severe. Moderate. Light. Violent.

98. For an aircraft what are the meteorological dangers associated with a Harmattan wind?A. B. C. D. Hail. Dust and poor visibility. Thunderstorms. Sand up to FL 150.

99. What is the strong relatively cold katabatic wind, blowing down the northern Adriatic coast, mainly during the winter and spring called?B. the Changed withGhibli. DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). C. Scirocco. D. Bora. A. Mistral.

100. In a land- and sea-breeze circulation the land-breeze blows:A. B. C. D. during the night and is stronger than the sea-breeze. during the night and is weaker than the sea-breeze. during the day and is stronger than the sea-breeze. during the day and is weaker than the sea-breeze.

101. A high pressure area (slack pressure gradient) covers part of the Mediterranean Sea and coastal region during the summer. What surface wind direction is likely at an airport at the coast on a sunny afternoon?A. B. C. D. Sea to land. Parallel to the coastline. Land to sea. Variable.

102. A katabatic wind blowsA. B. C. D. up the slope during the night. down the slope during the night. up the slope during the day. down the slope during the day.

103. In the northern hemisphere at 5000 ft/AGL a south-westerly wind is blowing. The surface wind at the same location is a southerly wind. What is the primary reason of difference between these two wind directions?A. B. C. D. A strong pressure gradient at higher altitudes. Friction between the wind and the surface. Stronger Coriolis force at the surface. The influence of warm air at the lower altitude.

104. Friction between the air and the ground results in the northern hemisphere in:A. veering of the wind and increase of wind speed at the surface. B. veering of the wind and decrease of wind speed at the surface.

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ATP Online - Meteorology Page 12 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).C. backing of the wind and decrease of wind speed at the surface. D. backing of the wind and increase of wind speed at the surface.

105. Whilst flying at FL 180 on the northern hemisphere an aircraft experiences right drift. What effect, if any, will this have on the aircraft's true altitude ?A. B. C. D. It decreases It remains constant. It increases. Without knowing the pressure change this question cannot be answered.

106. What is the most likely temperature at the tropical tropopause?A. B. C. D. -35C. -25C. -55C. -75C.

107. Which weather condition lowers true altitude as compared to pressure altitude to a position where flight over mountains could be dangerous?A. B. C. D. Warm high. Cold high. Cold low. Warm depression.

108. In the southern hemisphere what wind effect would you expect when flying from a high pressure area towards a low pressure area at FL 100?A. B. C. D. Wind from the left. Wind from the right. Headwind with no drift. Tailwind with no drift.

109. What degree of turbulence, if any, is likely to be encountered while flying through a cold front in the summer over Central Europe at FL 100?A. the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). Changed withLight turbulence in CB cloud. B. Moderate turbulence in NS cloud. C. Severe turbulence in CB cloud. D. Light turbulence in ST cloud.

110. You are flying at 2 500 FT/AGL, the wind is 180, and intend to land at an airport, at sea level directly below. From approximately which direction would you expect the surface wind (mid-latitude, northern hemisphere)?A. B. C. D. South-southeast. South-southwest. South. Southwest.

111. What are the typical differences with regard to the temperature and humidity between an air mass with its origin in the Azores and an air mass with its origin over northern Russia ?A. B. C. D. The air of the Azores is warmer and dryer than the North-Russian air. The air of the Azores is warmer and more humid than the North-Russian air. The North-Russian air is colder and more humid than the air of the Azores. The North-Russian air is warmer and dryer than the air of the Azores.

112. Where is the source of continental tropical air that affects Europe in summer?A. B. C. D. The southern Balkan region and the Near East. Southern Italy. The Azores region. Southern France.

113. Where does polar continental air originate?A. B. C. D. Siberian landmass. Polar ice cap. The region of the British Isles. The region of the Azores.

114. In which air mass are extremely low temperatures encountered?A. Continental polar air.

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ATP Online - Meteorology Page 13 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).B. Maritime arctic air. C. Maritime polar air. D. Continental tropical air.

115. With what type of clouds are showers most likely associated?A. B. C. D. Nimbostratus. Cumulonimbus. Stratus. Stratocumulus.

116. At what time of day, or night, is radiation fog most likely to occur?A. B. C. D. Shortly after midnight. Late evening. At sunset. Shortly after sunrise.

117. What is the average vertical extent of radiation fog?A. B. C. D. 10 000 FT. 500 FT. 5 000 FT. 2 000 FT.

118. Which of the following weather conditions favour the formation of radiation fog?A. B. C. D. Light wind, extensive cloud, moist air. Strong wind, little or no cloud, moist air. Light wind, little or no cloud, moist air. Light wind, extensive cloud, dry air.

119. What type of fronts are most likely to be present during the winter in Central Europe when temperatures close to the ground are below 0C, and freezing rain starts to fall?A. B. C. D. Cold occlusions. High level cold fronts. Warm fronts, warm occlusions. Cold fronts.

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).120. Which of the following conditions are you most likely to encounter when approaching an active warm front at medium to low level ?A. B. C. D. Low cloud base and poor visibility. Extreme turbulence and severe lightning striking the ground. High cloud base, good surface visibility, and isolated thunderstorms. Severe thunderstorms at low altitude.

121. During a cross-country flight at FL 50, you observe the following sequence of clouds: Nimbostratus, Altostratus, Cirrostratus, Cirrus. Which of the following are you most likely to encounter ?A. B. C. D. A strong downdraught. Decreasing temperatures. Increasing temperatures. Strong, gusty winds.

122. In case of fronts, what cloud formation is most likely to occur at low levels when a warm air mass overrides a cold air mass?A. B. C. D. Cumulus. Cumulonimbus. Nimbostratus. Altostratus.

123. The approximate inclined plane of a warm front is:A. B. C. D. 1/300 1/500 1/50 1/150

124. What type of low pressure area is associated with a surface front?A. B. C. D. A cold air pool. A low on lee side of a mountain. Polar front low. Heat low.

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ATP Online - Meteorology Page 14 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).125. In which approximate direction does the centre of a non-occluded frontal depression move?A. B. C. D. In the direction of the warm sector isobars. In the direction of the isobars ahead of the warm front. In the direction of the isobars behind the cold front. In the direction of the sharpest pressure increase.

126. Where is the coldest air to be found, in an occlusion with cold front characteristics?A. B. C. D. Ahead of the front. Behind the front. At the surface position of the front. At the junction of the occlusion.

127. What type of front / occlusion usually moves the fastest?A. B. C. D. Cold occlusion. Warm front. Cold front. Warm occlusion.

128. Over Central Europe what type of cloud cover is typical of the warm sector of a depression during winter?A. B. C. D. CI, CS. ST. Fair weather CU. CU, CB.

129. What weather conditions are prevalent during the summer, over the North Sea, approximately 300 km behind a quickly moving cold front?A. B. C. D. Rain covering a large area, 8 octas NS. Cloud cover mostly scattered, isolated showers. Advection fog. 8 octas CS, AS without precipitation.

Changed with theisDEMO VERSIONlikelyCAD-KAS PDF-Editor (http://www.cadkas.com). in western Europe? of to be in a warm sector of maritime tropical air during a summer afternoon 130. What the surface visibility mostA. B. C. D. Moderate (several km). Very poor (less than 1 km). Good (greater than 10 km). Very good (greater than 50 km).

131. Which one of the following statements regarding the intertropical convergence zone (ITCZ) is correct?A. B. C. D. Thunderstorms seldom occur within the area of the ITCZ. The ITCZ is always associated with a strong jet stream. Frequent and widespread thunderstorms are to be expected within the area of the ITCZ. The ITCZ does not change its position during the course of the year.

132. In which of the following bands of latitude is the intertropical convergence zone most likely to be encountered in January, between Dakar and Rio de Janeiro?A. B. C. D. 3 - 8S. 7 - 12N. 8 - 12S. 0 - 7N.

133. What weather conditions are indications of the summer monsoon in India?A. B. C. D. Thunderstorms, showers of heavy rain. Fog. Sandstorms. Stratus clouds and drizzle.

134. After passing at right angles through a very active cold front in the direction towards the cold air, what will you encounter at FL 50, in the northern hemisphere immediately after a marked change in temperature?A. B. C. D. A backing in the wind direction. A veering in the wind direction. A decrease in tailwind. An increase in tailwind.

135. When are the rainy seasons in equatorial Africa?

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ATP Online - Meteorology Page 15 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. March to May and August to October. December to February and July to October. April to July and December to February. March to May and October to November.

136. Which of the following best describes the intertropical convergence zone ?A. B. C. D. The zone where cold fronts form in the tropics. The zone where the Harmattan meets the north-easterly trade winds over Africa. The zone where the trade winds of the northern hemisphere meet those of the southern hemisphere. The zone where the west winds meet the subtropical high pressure belt.

137. What is the likely track for a hurricane in the Caribbean area?A. B. C. D. West deep into the USA. East then south. West in the earlier stages and later turning north east. West in the earlier stages and later turning south east.

138. During which seasons are hurricanes most likely to appear in the northern hemisphere?A. B. C. D. Winter. Summer and autumn. Winter and spring. All seasons.

139. What is encountered during the summer, over land, in the centre of a cold air pool?A. B. C. D. Strong westerly winds. Sky clear (SKC). Fine weather CU. Showers and thunderstorms.

140. How do you recognize a cold air pool?A. B. C. D. A cold air pool may only be recognized on the surface chart as a low pressure area. A cold air pool may only 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).

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).141. What type of air movement is associated with the centre line of a trough?A. B. C. D. Divergence with lifting. Convergence with descending air. Divergence with descending air. Convergence with lifting.

142. What is the correct term for the descending air flow in a large high pressure area?A. B. C. D. Convection. Subsidence. Advection. Convergence.

143. In mid-latitudes, what surface weather is associated with a stationary high pressure region over land in the winter?A. B. C. D. Thunderstorms. The possibility of snow showers. A tendency for fog and low ST. NS with continuous rain.

144. On which of the following aviation weather charts can a pilot most easily find a jetstream?A. B. C. D. Significant weather chart. Wind / temperature chart. Upper air chart. Surface chart.

145. Why are indications about the height of the tropopause not essential for flight documentation in the tropics?A. B. C. D. The meteorological services are unable to provide such a chart. The tropopause is generally well above the flight level actually flown. The temperatures of the tropical tropopause are always very low and therefore not important. The tropopause is always at the same height.

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ATP Online - Meteorology Page 16 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).146. The QNH of an airport at sea level is 983 hPa and the temperature deviation from ISA is -15C below FL 100. What is the true altitude of FL 100?A. B. C. D. 9740 ft 8640 ft 10160 ft 11460 ft

147. In the TAF for Athens, during the summer, for the time of your landing you note: TEMPO TS. What is the maximum time this deterioration in weather can last in anyone instance ?A. B. C. D. 20 minutes. 60 minutes. 120 minutes. 10 minutes.

148. How are well separated CB clouds described on the Significant Weather Chart?A. B. C. D. FRQ CB. OCNL CB. ISOL CB. EMBD CB.

149. The cold front is indicated with a number at position:A. B. C. D. 4 1 3 2

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150. Of the four radio soundings, select the one that indicates ground fog:A. B. C. D. 2 1 3 4

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151. What does the symbol indicate on a significant weather chart?A. B. C. D. The lower limit of the tropopause. The upper limit of significant weather at FL 400. The center of a tropopause "high", where the tropopause is at FL 400. The center of a high pressure area at 400 hPa.

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152. Which typical weather situation is shown on the weather chart ? (Spacing of the isobars: 5 hPa)A. B. C. D. West wind condition. Warm south wind condition (Foehn). Flat pressure pattern. Cutting wind.

153. Which one of the tracks (dashed lines) is represented by the cross-section shown on the left ?A. B. C. D. Track D-A Track B-C Track B-A Track C-A

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154. Which cross-section of air mass and cloud presentation is applicable to the straight line A-B?A. B. C. D. 3 2 4 1

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155. Refer to the diagram. Assuming the usual direction of movement, where will this polar frontal wave have moved ?A. B. C. D. Position 1 Position 3 Position 2 Position 4

156. What is the classification of the airmass affecting position "Q" at 0600 UTC?A. B. C. D. Tropical maritime.; Polar maritime.; Polar continental.; Tropical continental.;

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ATP Online - Meteorology Page 19 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).

157. What information is required to calculate a lowest usable flight level from a given minimum safe altitude?A. B. C. D. Highest value of QNH and the highest negative temperature deviation from ISA. Lowest value of QNH and the highest negative temperature deviation from ISA. Highest value of QNH and the highest positive temperature deviation from ISA Lowest value of QNH and the lowest negative temperature deviation from ISA

158. What is the relationship, if any, between QFE and QNH at an airport situated 50 FT below sea level?A. B. C. D. QFE equals QNH. QFE is smaller than QNH. No clear relationship exists. QFE is greater than QNH.

159. You plan a flight over a mountain range at a true altitude of 15000 FT/AMSL. The air is on an average 15C colder than ISA, the pressure at sea level is 1003 hPa. What approximate indication should the altimeter (setting 1013.2 hPa) read?A. B. C. D. 15690 FT. 16230 FT. 13830 FT. 14370 FT.

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).160. During a flight at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1015 hPa), an aircraft remains at a constant true altitude. The reason for this is that:A. B. C. D. the altimeters are erroneous, and need to be tested. the air at Marseille is warmer than that at Palma de Mallorca. one of the two QNH values may be incorrect. the air at Marseille is colder than that at Palma de Mallorca.

161. An aircraft lands at an airport (airport elevation 1240 FT, QNH 1008 hPa). The altimeter is set to 1013 hPa. The altimeter will indicate:A. B. C. D. 1280 FT. 1200 FT. 1105 FT. 1375 FT.

162. At what time of the year are typhoons most likely to occur over the southern islands of Japan?A. B. C. D. January to May. May to July. July to November. September to January.

163. What units are used to report vertical wind shear?A. B. C. D. m/sec. m/100 FT. kt. kt/100 FT.

164. Which of the following weather reports is a warning of conditions that could be potentially hazardous to aircraft in flight ?A. B. C. D. ATIS. SPECI. TAF. SIGMET.

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ATP Online - Meteorology Page 20 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).165. In which of the following circumstances is a SIGMET issued ?A. B. C. D. Clear ice on the runways of an aerodrome. Fog or a thunderstorm at an aerodrome. Severe mountain waves. A sudden change in the weather conditions contained in the METAR.

166. After landing at an aerodrome (aerodrome elevation 1715 FT), the altimeter indicates an altitude of 1310 FT. The altimeter is set to the pressure value of 1013 hPa. What is the QNH at this aerodrome?A. B. C. D. 998 hPa. 1028 hPa. 1013 hPa. 1015 hPa.

167. You intend to overfly a mountain range. The recommended minimum flight altitude is, according to the aviation chart, 15000 FT/AMSL. The air mass that you will fly through is on average 15C warmer than the standard atmosphere. The altimeter is set to QNH (1023 hPa). At what altimeter reading will you effectively be at the recommended minimum flight altitude?A. B. C. D. 15900 FT. 14370 FT. 13830 FT. 14100 FT.

168. You are flying at FL 130, and your true altitude is 12000 FT. What is the temperature deviation from that of the standard atmosphere at FL 130 (QNH 1013,2 hPa) ?A. B. C. D. ISA -20C ISA +/-0C ISA +12C ISA +20C

169. Rime ice forms through the freezing onto aircraft surfaces ofA. B. C. D. snow. large supercooled water drops. small supercooled water drops. water vapour.

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).170. How does a pilot react to heavy freezing rain at 2000 FT/AGL, when he is unable to deice, nor land?A. B. C. D. He turns back before the aircraft loses manoeuvrability. He descends to the warm air layer below. He ascends to the cold air layer above. He continues to fly at the same altitude.

171. What name is given to the jet stream lying across India (A) ?A. B. C. D. Arctic jet stream. Polar front jet stream. Tropical jet stream. Sub-tropical jet stream.

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172. An aircraft is flying through the polar front jet stream from south to north, beneath the core. How would the OAT change, in the northern hemisphere, during this portion of the flight?A. B. C. D. It decreases. It remains constant. It increases. It first increases, then decreases.

173. What is the average height of the arctic jet stream core?A. the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). Changed with30000 FT. B. 20000 FT . C. 50000 FT. D. 40000 FT.

174. What is the approximate ratio between height and width for a jet stream cross section?A. B. C. D. 1/1000 1/100 1/10 1/1

175. Which jet stream blows all year round, over the northern hemisphere?A. B. C. D. The subtropical jet stream. The polar night jet stream. The arctic jet stream. The equatorial jet stream.

176. What is the average height of the jet core within a polar front jet stream?A. B. C. D. 50000 FT. 30000 FT. 40000 FT. 20000 FT.

177. An aircraft is flying from south to north, above the polar front jet stream, at FL 400 in the southern hemisphere. What change, if any, in temperature will be experienced ?A. B. C. D. It decreases and then increases. It stays the same. It decreases. It increases.

178. A wind speed of 350 kt within a jet stream core should be world-wide regarded as:A. not unusual in polar regions. B. not possible.

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ATP Online - Meteorology Page 22 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).C. a common occurrence. D. possible but a very rare phenomenon.

179. Does the following report make sense? METAR LSZH 182320Z VRB02KT 5000 MIFG 02/02 Q1015 NOSIGA. B. C. D. The report is nonsense, because it is impossible to observe a visibility of 5 km if shallow fog is reported. The report is not possible, because, with a temperature of 2C and a dew point of 2C there must be uniform fog. The report would never be seen, because shallow fog is not reported when the visibility is more than 2 km. The report is possible, because shallow fog is defined as a thin layer of fog below eye level.

180. You receive the following METAR: LSGG 120750Z 00000KT 0300 R05/0700N FG VV001 M02/M02 Q1014 NOSIG = What will be the RVR at 0900 UTC?A. B. C. D. 300 m. 700 m. 900 m. The RVR is unknown, because the "NOSIG" does not refer to RVR.

181. An aircraft over Western Europe is crossing a jet stream 2500 FT below its core at right angles. While crossing, the outside temperature is increasing. The prevailing wind isA. B. C. D. from the left. tailwind. headwind. from the right

182. Which of the following cloud types can project up into the stratosphere?A. B. C. D. Cumulonimbus Cirrostratus Altocumulus Altostratus

183. Which one of the following statements applies to the tropopause?A. B. C. D. It is, by definition, a temperature inversion It separates the troposphere from the stratosphere It is, by definition, an isothermal layer It indicates a strong temperature lapse rate

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).184. The 0 isotherm is forecast to be at FL 50. At what FL would you expect a temperature of -6 C?A. B. C. D. FL 20 FL 110 FL 100 FL 80

185. What positions are connected by isobars on the surface weather chart?A. B. C. D. Positions with the same wind velocity at a given level Positions with the same relative pressure heights Positions with the same air pressure at a given level Positions with the same temperature at a given level

186. A vertical spacing of 1000 FT is the standard required separation between two FL. Under conditions of cold air advection (ISA -15C), what would the true vertical separation be?A. B. C. D. Without QNH information, it can not be determined More than 1000 FT It remains 1000 FT Less than 1000 FT

187. At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude?A. B. C. D. At a temperature greater than or equal to that of the ISA and where the QNH is greater than or equal to 1013.25 hPa In a cold low pressure region In a very cold area with a QNH of 1015 hPa At a temperature less than or equal to that of the ISA and where the QNH is less than 1013.25 hPa

188. What is the main cause for the formation of a polar front jet stream?A. B. C. D. Strong winds in the upper atmosphere The pressure difference, close to the ground, between a high over the Azores and a low over Iceland The north-south horizontal temperature gradient at the polar front The varied elevations of the tropopause in the polar front region

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ATP Online - Meteorology Page 23 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).189. Which jet stream is connected with a surface front system?A. B. C. D. The easterly jet stream The equatorial jet stream The polar front jet stream The subtropical jet stream

190. At approximately what flight level is the subtropical jet stream found?A. B. C. D. FL 200 FL 500 FL 400 FL 300

191. A parcel of rising air stays unsaturated. Which of the following statements is correct?A. B. C. D. Relative humidity decreases, mixing ratio remains unchanged Relative humidity and mixing ratio remain unchanged Relative humidity increases, temperature decreases Mixing ratio increases, temperature decreases

192. In which of the following changes of state is latent heat released ?A. B. C. D. Solid to liquid Solid to gas Gas to liquid Liquid to gas

193. How are high level condensation trails formed that are to be found occasionally behind jet aircraft ?A. B. C. D. Through water vapour released during fuel combustion Through a decrease in pressure, and the associated adiabatic drop in temperature at the wing tips while flying through relatively warm but humid air In conditions of low humidity, through the particles of soot contained in the exhaust gases Only through unburnt fuel in the exhaust gases

194. What DEMO air mass leads of CAD-KAS PDF-Editor (http://www.cadkas.com). Changed with theprocess in anVERSIONto the creation of wide spread NS and AS cloud coverage?A. B. C. D. Sinking Lifting Convection process Radiation

195. Which of the following cloud is classified as low level cloud ?A. B. C. D. AS CS CC ST

196. In which of the following conditions is moderate to severe airframe icing most likely to be encountered?A. B. C. D. In clear air above the freezing level In Nimbostratus cloud Below the freezing level in clear air Within cloud of any type

197. What flying conditions are normally encountered when flying in cirrus clouds?A. B. C. D. Average horizontal visibility less than 500 m; nil icing. Average horizontal visibility more than 1000 m; light to moderate rime ice. Average horizontal visibility more than 1000 m; nil icing. Average horizontal visibility less than 500 m; light to moderate icing.

198. Which of the following is most likely to lead to the dissipation of radiation fog ?A. B. C. D. A marked decrease in wind velocity close to the ground A marked increase in wind velocity near the ground A build up of a high pressure area resulting in adiabatic warming associated with a sinking air mass Ground cooling caused by radiation during the night

199. Which of the following conditions is most likely to lead to the formation of steam fog (arctic smoke)?A. The sea is warmed by strong radiation from the sun B. The coastal region of the sea cools at night

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ATP Online - Meteorology Page 24 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).C. Cold air moving over warm water D. Warm air moving over cold water

200. How does freezing rain develop?A. B. C. D. Rain falls through a layer where temperatures are below 0C Through melting of ice crystals Through melting of snow grains Snow falls through a layer where temperatures are above 0C

201. What type of cloud can produce hail showers?A. B. C. D. AC CB NS CS

202. In which of the following regions does maritime polar air originate?A. B. C. D. Baltic Sea Black Sea Region of British Isles East of Greenland

203. In which of the following situations can freezing rain be encountered ?A. B. C. D. Ahead of a cold front in the summer Behind a warm front in the summer Ahead of a warm front in the winter Ahead of a cold front in the winter

204. How do air masses move at a warm front ?A. B. C. D. Warm air undercuts a cold air mass Cold air overrides a warm air mass Cold air undercuts a warm air mass Warm air overrides a cold air mass

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).205. What type of precipitation would you expect at an active unstable cold front?A. B. C. D. Freezing rain Drizzle Showers associated with thunderstorms Light to moderate continuous rain

206. What is the relative movement of the two air masses along a cold front ?A. B. C. D. Warm air pushes over a cold air mass Cold air pushes under a warm air mass Warm air pushes under a cold air mass Cold air slides over a warm air mass

207. What cloud cover is typical for a wide warm sector of a polar front depression over Central Europe in the summer ?A. B. C. D. Fair weather CU Sky clear BKN CU and CB ST with drizzle

208. Which of the following describes a warm occlusion?A. B. C. D. The warmer air mass is ahead of the original warm front The air mass ahead of the front is drier than the air mass behind the front The coldest air mass is ahead of the original warm front The air mass behind the front is more unstable than the air mass ahead of the front

209. When do cold occlusions occur most frequently in Europe?A. B. C. D. Summer Winter and spring Winter Autumn and winter

210. In which main direction does a polar front depression move?

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ATP Online - Meteorology Page 25 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. Along the front towards the east Across the front towards the south Across the front towards the north Along the front towards the west

211. What change in pressure, will occur at point A, during the next hour?A. B. C. D. Irregular fluctuations Approximately constant pressure A drop in pressure A rise in pressure

212. What the most Changed with theisDEMOlikely cause of a lack of clouds at higher levels in a stationary high? VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. Sinking air Divergence at higher levels Instability Rising air

213. On which coast of North America, is the danger of tropical revolving storms the greatest?A. B. C. D. N coast W coast SE coast NE coast

214. What is characteristic of the pamperos?A. B. C. D. A marked advance of cold air in South America A marked advance of cold arctic air in North America Katabatic winds in the Atlas Mountains Foehn conditions in the Spanish Pyrenees

215. Where, during a flight from Marseille to Dakar, in July, may the ITCZ be encountered?A. B. C. D. At the latitudes of Algeria Near the Canary Islands In the vicinity of Dakar At the latitudes of Gibraltar

216. Which wind systems converge on the ITCZ, when it lies at the equator?A. B. C. D. SE trade winds and NE trade winds NW monsoon and SW trade winds SW monsoon and NW monsoon SW monsoon and NW trade winds

217. From which direction do the trade winds blow, in the southern hemisphere?A. SW B. N

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ATP Online - Meteorology Page 26 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).C. NE D. SE

218. What weather conditions in the region of the Alps would you expect with Foehn from south?A. B. C. D. Clouds, on the southern sides of passes in the Alps Heavy clear air turbulence on the southern side of the Alps Heavy airframe icing conditions on the northern side of the Alps Strong north winds on the southern side of the Alps

219. At what temperatures would you expect the heaviest ice accretion to occur in a CB?A. B. C. D. Close to the freezing level Between -2C and -15C Between -20C and -30C Between -30C and -40C

220. Clear ice forms on an aircraft by the freezing of:A. B. C. D. large supercooled water drops snow small supercooled water drops water vapour

221. What weather conditions would you expect at a squall line?A. B. C. D. Continuous heavy rain Fog Strong whirlwinds reaching up to higher levels Thunderstorms

222. What is the approximate maximum diameter of a the area affected by damaging winds at the surface caused by a microburst ?A. B. C. D. 20 km 50 km 400 m 4 km

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).223. In general, the visibility during rainfall compared to during drizzle isA. B. C. D. less greater the same in rain - below 1 km, in drizzle - more than 2 km

224. Which of the following symbols represents a severe squall line?A. B. C. D. Symbol 4) Symbol 2) Symbol 1) Symbol 3)

225. What is a trend forecast?A. B. C. D. A landing forecast appended to METAR/SPECI, valid for 2 hours A routine report A route forecast valid for 24 hours An aerodrome forecast valid for 9 hours

226. What does the abbreviation "BKN" mean?

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ATP Online - Meteorology Page 27 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. Nil significant cloud cover 3-5 Eights of the sky is cloud covered 3-4 Eights of the sky is cloud covered 5-7 Eights of the sky is cloud covered

227. What does the abbreviation "nosig" mean?A. B. C. D. No weather related problems No significant changes No report received Not signed by the meteorologist

228. In which weather report would you expect to find information about icing conditions on the runway?A. B. C. D. SIGMET GAFOR TAF METAR

229. In which of the following 1850 UTC METAR reports, is the probability of fog formation, in the coming night, the highest?A. B. C. D. 00000KT 9999 SCT300 21/01 Q1032 NOSIG = 22004KT 6000 -RA SCT012 OVC030 17/14 Q1009 NOSIG = VRB01KT 8000 SCT250 11/10 Q1028 BECMG 3000 BR = VRB02KT 2500 HZ SCT120 14/M08 Q1035 NOSIG =

230. Which of the following extracts of weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (MSA minus airport elevation equals: LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT)A. B. C. D. LSGG 22003KT 9999 SCT120 BKN280 09/08 Q1026 BECMG 5000 BR = LFSB 00000KT 9000 SCT080 22/15 Q1022 NOSIG = LSZH 26024G52KT 9999 BKN060 17/14 Q1012 RETS TEMPO 5000 TSRA = LSZB 30004KT 9999 SCT090 10/09 Q1006 NOSIG =

231. Within a short interval, several flight crews report that they have experienced strong clear air turbulence in a certain airspace. What is the consequence of these reports?A. the DEMO VERSION of CAD-KAS Changed withThe competent aviation weather office will issue a SIGMET PDF-Editor (http://www.cadkas.com). B. The competent aviation weather office will issue a storm warning C. The airspace in question, will be temporarily closed D. The competent aviation weather office will issue a SPECI

232. At which airport, is the following weather development taking place? TAF 060600Z 060716 25006KT 8000 BKN240 BECMG 0710 OVC200 BECMG 1013 23010KT 8000 OVC100 BECMG 1316 23014KT 6000 RA SCT030 OVC050 =A. B. C. D. LFPO EDDL LOWW LEMD

233. What weather conditions are expected at Paris airport (LFPO) around 0550 UTC?A. B. C. D. 20004KT 8000 SCT110 SCT250 22/08 Q1016 NOSIG = 26012KT 9999 SCT025 SCT040 14/09 Q1018 TEMPO 5000 SHRA = 22020G36KT 1500 TSGR SCT004 BKN007 BKN025CB 18/13 Q1009 BECMG NSW = 23014KT 3000 +RA SCT008 OVC025 15/13 Q1004 NOSIG =

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234. Over Madrid, what intensity of turbulence and icing is forecast at FL 200 ?A. B. C. D. Moderate turbulence, moderate icing Severe turbulence, severe icing Moderate turbulence, light icing Severe turbulence, moderate icing

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235. Which airport, at 1200 UTC, has the lowest probability of precipitation?A. B. C. D. LSZH EFHK ENFB ESSA

236. Over Paris at what flight level would you expect to find the tropopause according to the map?A. FL 280 B. FL 300

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ATP Online - Meteorology Page 29 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).C. FL 150 D. FL 330

237. What is the optimum flight level between Rome and Paris according to the significant weather chart?A. B. C. D. FL 360 FL 340 FL 160 FL 220

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238. Flight Zurich to Rome, ETD 1600 UTC, ETA 1800 UTC. At what flight level would you first expect to encounter clear air turbulence on the climb out from Zurich?A. B. C. D. FL 140 FL 220 FL 320 FL 160

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239. What is the approximate height of the tropopause between Munich and Helsinki?A. B. C. D. FL 300; FL 340; FL 390; FL 280;

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240. Flight from Bordeaux to Amsterdam, ETA 2100 UTC. What lowest cloud base is forecast for arrival at Amsterdam?; TAF EHAM 281500Z 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000 NSWA. B. C. D. 500 FT 800 FT 250 FT 500 m

241. You are flying from Munich to Amsterdam. Which of the following flight levels would you choose in order to avoid turbulence and icing?A. B. C. D. FL 180 FL 260 FL 320 FL 140

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242. In what height range and at what intensity could you encounter turbulence in CAT area n2?A. B. C. D. From FL 220 to FL 400, moderate From FL 250 to FL 320, moderate From FL 240 to FL 370, light From below FL 130 to FL 270, light

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243. At what flight level is the jet stream core that is situated over northern Scandinavia ?A. B. C. D. FL 280 FL 330 FL 360 FL 300

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244. At which position is the development of thunderstorms most likely, and what is the maximum height of the CB clouds at 00 UTC?A. B. C. D. Position A, FL 200. Position D, FL 290. Position B, FL 270. Position C, FL 200.

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245. At what approximate flight level is the tropopause over Frankfurt?A. B. C. D. FL 330 FL 300 FL 240 FL 350

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246. Select from the map the wind for the route Zurich - London at FL 280.A. B. C. D. 040 / 60 160 / 90 220 / 60 250 / 80

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247. The temperature at FL 330 overhead London will beA. B. C. D. -39C -57C -45C -33C

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248. The front labelled "Z" is a:A. B. C. D. Cold occlusion Warm front Cold front Warm occlusion

249. What name is given to the jet stream lying over North Africa (B) ?A. B. C. D. Sub-tropical jet stream Equatorial jet stream Arctic jet stream Polar front jet stream

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250. Flight Lisbon to Bordeaux, ETA 1800 UTC. What type of precipitation is forecast on the approach to Bordeaux ?; TAF LFBD 281400Z 281524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT; 8000 +SHRA BKN015CB PROB30 TSRA =A. B. C. D. Moderate snow showers Continuous moderate rain Heavy rain showers Light drizzle and fog

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. 8 NM 10 or more km 10 NM 8 km

251. Flight Lisbon to Bordeaux, ETA 1800 UTC. At ETA Bordeaux what is the lowest quoted visibility forecast ?; TAF LFBD 281400Z 281524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT; 8000 +SHRA BKN015CB PROB30 TSRA =

252. What wind is forecast at FL 390 over Paris ?A. B. C. D. 210/40 030/40 190/40 240/20

253. What is the average temperature at FL 160 between Oslo and Paris ?A. B. C. D. -15C -19C -25C -23C

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254. What is the temperature deviation in degrees Celsius, from the ICAO Standard Atmosphere overhead Frankfurt ?A. B. C. D. ISA +13C ISA -2C ISA +2C ISA -13C

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255. What is the speed of the front located over France ?A. B. C. D. 30 kt 25 kt 10 kt 15 kt

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256. Flight Munich to London. What is the direction and maximum speed of the jet stream affecting the route between Munich and London ?A. B. C. D. 050 / 120 kt 050 / 120 km/h 220 / 120 kt 230 / 120 m/sec

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257. Flight from Bordeaux to Amsterdam, ETA 2100 UTC. At ETA Amsterdam what surface wind is forecast ?; TAF EHAM 281500Z 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT; SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000; NSW BKN020 =A. B. C. D. 250 / 20 kt 120 / 15 kt gusts 25 kt 300 / 15 kt maximum wind 25 kt 140 / 10 kt

258. Flight from Bordeaux to Amsterdam, ETA 2100 UTC. What is the minimum visibility forecast for ETA Amsterdam ?; TAF EHAM 281500Z 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT; SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000; NSW BKN020 =A. km Changed with6 the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). B. 3 km C. 5 NM D. 5 km

259. Flight Shannon to London. What amount and type of cloud is forecast for the eastern sector of the route between Shannon and London at FL 220 ?A. B. C. D. Scattered castellanus Individual cumulonimbus Scattered towering cumulus Overcast nimbo layered cumulonimbus

260. Over Amsterdam, what amount and general type of cloud would you expect at FL 160 ?A. Isolated cumulonimbus only B. 5 to 7 oktas towering cumuliform cloud and with moderate turbulence

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ATP Online - Meteorology Page 39 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).C. 4 oktas broken cumulus D. Mainly 5 to 8 oktas of stratiform cloud in layers

261. To what extent is Munich covered by clouds ?A. B. C. D. 1 to 4 oktas 5 to 8 oktas 5 to 7 oktas 3 to 5 oktas

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262. What OAT would you expect at FL 200 over Geneva ?A. B. C. D. -16C -20C -24C -28C

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263. 8/8 stratus base 200 FT/AGL is observed at sunrise at an aerodrome in the north of France; the QNH is 1028 hPa and there is a variable wind of 3 kt. What change in these clouds is likely at 1200 UTC in summer and winter?A. B. C. D. Winter: BKN, base 2500 FT/AGL; summer: BKN, base 3500 FT/AGL. Winter: OVC, base 500 FT/AGL; summer: SCT, base 3000 FT/AGL. Winter: clear sky; summer: BKN CB, base 1500 FT/AGL. Winter: SCT, base 3000 FT/AGL; summer: OVC, base 500 FT/AGL.

264. The lowest visibility forecast at ETA Zurich 1430 UTC is:; LSZH 261019 20018G30KT 9999 -RA SCT050 BKN080 TEMPO 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT 4000 RA OVC010=;A. B. C. D. 6 NM. 10 km. 4 km. 6 km.

265. The lowest cloud base forecast at ETA Zurich (1200 UTC) is:; LSZH 061019 20018G30KT 9999 -RA SCT050 BKN080 TEMPO 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT 4000 RA OVC010=;

Changed with5000 FT.DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). B. theC. 1500 m. D. 1500 FT.

A. 1000 FT.

266. The following weather message EDDM 241200Z 241322 VRB03KT 1500 BR OVC004 BECMG 1517 00000KT 0500 FG VV002 TEMPO 2022 0400 FG VV001 is a:A. B. C. D. 24 hour TAF. 9 hour TAF. METAR. SPECI.

267. In METAR messages, the pressure group represents theA. B. C. D. QNH rounded up to the nearest hPa. QNH rounded down to the nearest hPa. QFE rounded down to the nearest hPa. QFE rounded to the nearest hPa.

268. An altimeter adjusted to 1013 hPa indicates an altitude of 3600 FT. Should this altimeter be adjusted to the local QNH value of 991 hPa, the altitude indicated would beA. B. C. D. 3006 FT. 4194 FT. 4278 FT. 2922 FT.

269. In Geneva, the local QNH is 994 hPa. The elevation of Geneva is 1411 FT. The QFE adjustment in Geneva isA. B. C. D. 961 hPa. 967 hPa. 942 hPa. 948 hPa.

270. An aircraft is flying at FL 80. The local QNH is 1000 hPa. After the second altimeter has been adjusted to the local QNH, the reading will be approximatelyA. 8000 FT.

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ATP Online - Meteorology Page 41 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).B. 8350 FT. C. 7650 FT. D. 8600 FT.

271. The barometric compensator of an altimter is locked on reference 1013.2 hPa. The aircraft has to land on a point with an elevation of 290 feet where the QNH is 1023 hPa. The reading on the altimeter on the ground will be:A. B. C. D. 20 FT. 11 FT. 560 FT. -10 FT.

272. A microburst phenomenon can arise in theA. B. C. D. updraught of a cumulonimbus at the mature stage. updraught of a cumulonimbus at the growth stage. downdraught of a cumulonimbus at the formation stage. downdraught of a cumulonimbus at the mature stage.

273. While approaching your destination aerodrome you receive the following message: RVR runway 23: 400m This information indicates theA. B. C. D. length of runway which a pilot in an aircraft on the ground would see, on the threshold of runway 23. visibility on runway 23. portion of runway which a pilot on the threshold of any of the runways would see, with runway 23 in service. minimum visibility at this aerodrome, with runway 23 being the one in service.

274. What is the meaning of the abbreviation "SCT" ?A. B. C. D. 1 - 2 oktas 1 - 4 oktas 5 - 7 oktas 3 - 4 oktas

275. An airborne weather radar installation makes it possible to detect the location ofB. cumulonimbus, but provided that cloud of this type is accompanied by falls of hail Changed withzones of DEMO VERSION of CAD-KASalso their intensity (http://www.cadkas.com). the precipitation, particularly liquid-state precipitation, and PDF-Editor C. D. all clouds A. stratocumulus and its vertical development

276. The upper wind and temperature chart of 250 hPa corresponds, in a standard atmosphere, to aboutA. B. C. D. 32 000 FT 34 000 FT 39 000 FT 30 000 FT

277. Marseille Information gives you the following meteorological information for Ajaccio and Calvi for 1600 UTC: Ajaccio: wind 360/2 kt, visibility 2000 m, rain, BKN stratocumulus at 1000 FT, OVC altostratus at 8000 FT, QNH 1023 hPa. Calvi: wind 040/2 kt, visibility 3000 m, mist, FEW stratus at 500 FT, SCT stratocumulus at 2000 FT, OVC altostratus at 9000 FT, QNH 1023 hPa. The ceilings (more than 4 oktas) are therefore:A. B. C. D. 8000 FT at Ajaccio and 9000 FT at Calvi 1000 FT at Ajaccio and 500 FT at Calvi 1000 FT at Ajaccio and 9000 FT at Calvi 1000 FT at Ajaccio and 2000 FT at Calvi

278. Extensive cloud and precipitation is often associated with a non frontal thermal depression because of:A. B. C. D. surface divergence and upper level convergence causing widespread descent of air in the depression surface divergence and upper level convergence causing widespread ascent of air in the depression surface convergence and upper level divergence causing widespread descent of air in the depression surface convergence and upper level divergence causing widespread ascent of air in the depression

279. The equatorial easterly jet is a jet stream that occurs:A. B. C. D. only in the winter of the northern hemisphere at approx. 30 000 FT during the whole year in the northern hemisphere only in the summer of the northern hemisphere at approx. 45 000 FT during the whole year in the southern hemisphere

280. All pilots encountering Clear Air Turbulence are requested to report it. You experience CAT which causes passengers and crew to feel definite strain against their seat belt or shoulders straps. Unsecured objects are dislodged. Food service and walking are difficult. This should be reported as:

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ATP Online - Meteorology Page 42 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. Moderate severe extreme light

281. On average, going from the equator to the north pole, the altitude of the tropopauseA. B. C. D. decreases and its temperature increases increases and its temperature decreases decreases and its temperature decreases increases and its temperature increases

282. The Harmattan is aA. B. C. D. warm southerly dust-bearing wind affecting the coast of North Africa. NE wind affecting north-west Africa during November to April reducing visibility in rising dust. localised depression giving squally winds. SW monsoonal wind causing extensive areas of advection fog along the West African coast south of 15N.

283. To which aerodrome is the following TAF most applicable ? TAF 231019 24014KT 6000 SCT030 BKN100 TEMPO 1113 25020G38KT 2500 +TSRA SCT008 BKN025CB BECMG 1315 28012KT 9999 SCT025 TEMPO 5000 SHRA BKN020 BECMG 1719 27008KT 9999 SCT030A. B. C. D. EKCH LEMD LOWW LFPG

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284. What name is given to the low level wind system between the subtropical high pressure belt and the equatorial trough of low pressure (ITCZ) ?A. B. C. D. Doldrums. Westerly winds. Monsoon. Trade winds.

285. In which zone of a polar front jet stream is the strongest CAT to be expected ?A. B. C. D. About 12000 FT above the core. On the polar air side of the core. On the tropical air side of the core. Exactly in the centre of the core.

286. What is the minimum speed for a wind to be classified as a jet stream?A. B. C. D. 70 kt. 50 kt. 60 kt. 100 kt.

287. A wind sounding in the region of a polar front jet stream gives the following windprofile (Northern hemisphere).; 900hPa 220/20kt ; 800hPa 220/25kt ; 700hPa 230/35kt ; 500hPa 260/60kt ; 400hPa 280/85kt; 300hPa 300/100kt; 250hPa 310/120kt ; 200hPa 310/80kt; Which system is the jet stream associated with?A. B. C. D. With a warm front. With a cold front. With a ITCZ. With an easterly wave.

288. Where is the most dangerous zone in a tropical revolving storm?

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ATP Online - Meteorology Page 43 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. About 600 km away from the eye. In the centre of the eye. In the wall of clouds around the eye. Anywhere in the eye.

289. In the weather briefing room during the pre-flight phase of a passenger flight from Zurich to Rome, you examine the following weather reports of pressing importance at the time:; EINN SHANNON 2808 sigmet 2 valid 0800/1100 loc sev turb fcst einn fir blw fl 050 south of 53n wkn =; LIMM MILANO 2809 sigmet 2 valid 0900/1500 mod sev cat btn fl 250 and fl 430 fcst limm fir stnr nc =; EGLL LONDON 2808 sigmet nr01 valid 0800/1200 for london fir isol cb embd in lyr cloud fcst tops fl 300 btn 52n and 54n east of 002e sev ice sev turb ts also fcst mov e wkn =; Which decision is correct?A. B. C. D. You show no further interest in these reports, since they do not concern the route to be flown. Owing to these reports and taking into account the presence of heavy thunderstorms at planned FL 310 you select a higher flight level (FL 370). Because of the expected turbulence you select a flight level below FL 250. You cancel the flight since the expected dangerous weather conditions along the route would demand too much of the passengers.

290. In the month of August you prepare a flight (cruising level FL 370) from Bombay (19N - 73E) to Bangkok (13N - 100E). What wind conditions can you expect?A. B. C. D. Light winds diagonal to the route. Strong northerly winds. Tailwinds. Headwinds.

291. What is the most significant difference between an equatorial jet stream and all the other jet streams ?A. B. C. D. Wind direction. Wind speed. Vertical dimension. Horizontal dimension.

292. Which of the following types of jet streams can be observed all year round?A. B. C. D. Equatorial jet stream / arctic jet stream. Equatorial jet stream / polar front jet stream. Arctic jet stream / subtropical jet stream. Subtropical jet stream / polar front jet stream.

Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).293. Tropical revolving storms do not occur in the southeast Pacific and the south Atlantic mainly becauseA. B. C. D. there is no coriolis force present. the southeast trade winds cross over into the northern hemisphere. of the low water temperature. of the strong southeast wind.

294. Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG VV001 What visibility is forecast for 2400 UTC?A. B. C. D. Between 0 m and 1000 m. 500 m. 2000 m. Between 500 m and 2000 m.

295. Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG VV001 What does the abbreviation "VV001" mean?A. B. C. D. RVR less than 100 m. RVR greater than 100 m. Vertical visibility 100 FT. Vertical visibility 100 m.

296. What is the main energy source of a tropical revolving storm?A. B. C. D. Temperature difference between equatorial low pressure trough and subtropical high pressure belt. Latent heat released from condensing water vapour. Cold air advancing from temperate latitudes. The equatorial jet stream.

297. Which of the following meteorological phenomenon indicates upper level instability which may lead to thunderstorm development ?A. B. C. D. Red cirrus. AC castellanus. AC lenticularis. Halo.

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ATP Online - Meteorology Page 44 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).298. Isolated thunderstorms of a local nature are generally caused byA. B. C. D. frontal occlusion. frontal lifting (cold front). thermal triggering. frontal lifting (warm front).

299. Which thunderstorms move forward the fastest?A. B. C. D. Frontal thunderstorms. Thunderstorms formed by lifting processes. Orographic thunderstorms. Thermal thunderstorms.

300. What does the term METAR signify?A. B. C. D. A METAR signifies the actual weather report at an aerodrome and is generally issued in half-hourly intervals. A METAR is a landing forecast added to the actual weather report as a brief prognostic report. A METAR is a flight forecast, issued by the meteorological station several times daily. A METAR is a warning of dangerous meteorological conditions within a FIR.

301. How long from the time of observation is a TREND in a METAR valid?A. B. C. D. 1 hour. 2 hours. 30 minutes. 9 hours.

302. A zone of strong convection currents is encountered during a flight. In spite of moderate gust you decide to continue the flight. What are your precautionary measures?A. B. C. D. Decrease the speed / try to descend below the zone of convective currents. Increase the speed / try to descend below the zone of convective currents. Increase the speed / try to climb above the zone of convective currents if aircraft performance parameters allow. Decrease the speed / try to climb above the zone of convective currents if aircraft performance parameters allow.

Changed withFrom theDEMOtoVERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). the ground up about FL 200. A.B. From the ground up to a maximum of FL 450. C. From the ground up to about FL 100. D. From the base of the clouds up to about FL 200.

303. At which altitude, at temperate latitudes, may hail be expected in connection with a CB?

304. What is a SPECI?A. B. C. D. An aerodrome forecast issued every 9 hours. A routine aerodrome weather report issued every 3 hours. A warning of meteorological dangers at an aerodrome, issued only when required. A special aerodrome weather report, issued when a significant change of the weather conditions have been observed.

305. Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG VV001 What does the "BECMG" data indicate for the 18 to 21 hour time frame?A. B. C. D. The new conditions are achieved between 1800 and 2100 UTC Many short term changes in the original weather. Many long term changes in the original weather. A quick change to new conditions between 1800 and 1900 UTC.

306. Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG VV001 What does the abbreviation "BKN004" mean?A. B. C. D. 5 - 7 oktas, ceiling 400 FT. 1 - 4 oktas, ceiling 400 m. 1 - 4 oktas, ceiling 400 FT. 4 - 8 oktas, ceiling 400 m.

307. Refer to the following TAF extract; BECMG 1821 2000 BR BKN004 PROB30 TEMPO 2124 0500 FG VV001 What does the abbreviation "PROB30" mean?A. B. C. D. Conditions will last for at least 30 minutes. The cloud ceiling should lift to 3000 FT. Probability of 30%. Change expected in less than 30 minutes.

308. Where, as a general rule, is the core of the polar front jet stream to be found?

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ATP Online - Meteorology Page 45 of 213 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com).A. B. C. D. Just above the warm-air tropopause. Just below the cold-air tropopause. In the polar air mass. In the tropical air mass.

309. How long does a typical microburst last?A. B. C. D. About 30 minutes. 1 to 2 hours. 1 to 5 minutes. Less than 1 minute.

310. You cross a jet stream in horizontal flight at approximately right angles. While crossing, in spite of a strong wind of 120 kt, you notice the temperature barely changes. Which of the following statements is correct ?A. B. C. D. This phenomenon does not surprise you at all, since normally no large temperature differences are possible at these heights. Since the result of such readings seems impossible, you will have the instruments tested after landing. You assume the front associated with the jet stream to be very weak with practically no temperature difference between the two air masses. This phenomenon is absolutely normal as you are crossing the jet core.

311. In which month does the humid monsoon in India start?A. B. C. D. In October. In December. In March. In June.

312. At about what geographical latitude as average is assumed for the zone of prevailing westerlies?A. B. C. D. 80N. 10N. 50N. 30N.

313. During July flights from Bangkok (13N - 100E) to Karachi (25N - 67E) experience an average tailwind component of 22 kt. In January the same flights, also operating at FL 370, have an average headwind of 50 kt. What is the reason for this difference?A. the DEMO correspond to the of CAD-KAS PDF-Editor Changed withThe wind componentsV