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Questions for INDIGO METEOROLOGY(3272-4089)

Answer the following questions

1. The radiation of the sun heats
2. Which type of fog is likely to form when air having temperature of 15°C and dew point of 12°C blows at 10 knots over a sea surface having temperatures of 5°C ?
3. An aircraft is flying over the sea at FL 90, the true altitude is 9100 feet, local QNH is unknown. What assumption, if any, can be made about the air mass in which the aircraft is flying ?
4. In which layer is most of the atmospheric humidity concentrated ?
5. When isobars, for an area in the mid-latitudes on a weather map, are close together, the wind is most likely to be
6. What are the differences between radiation fog and advection fog ?
7. With which of the following types of cloud is ""+RA"" precipitation most commonly associated?
8. What relationship exists between the wind at 3000 feet and the surface wind?
9. 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?
10. In still air the temperature decreases at an average of 1.2°C per 100 m increase in altitude. This temperature change is called
11. What process in an air mass leads to the creation of wide spread NS, AS and ST cloud coverage?
12. Which layer of the atmosphere contains more than 90 per cent of all water vapour?
13. Which of the following conditions is most likely to lead to the formation of steam fog (arctic smoke)?
14. In a land- and sea-breeze circulation the land-breeze blows
15. A 500 hPa pressure level can vary in height. In temperate regions which of the following average heights is applicable ?
16. At the top of orographic waves, in mountainous regions, the cloud most likely to be encountered is
17. The QNH of an airport at sea level is 983 hPa and the temperature deviation from ISA is -15°C below FL 100.What is the true altitude of FL 100?
18. Which of the following is true concerning atmospheric pressure ?
19. If the QNH at Locarno (200 metres above sea level) is 1015 hPa, what is the approximate QFE?(Assume 1hPa = 8m)
20. Under which of the following conditions is the most severe CAT likely to be experienced ?A curved jet stream near a deep trough
21. When a given mass of air descends, what effect will it have on relative humidity?
22. Freezing rain occurs when
23. Cumulus clouds are an indication for
24. In which zone of a jet stream is the strongest CAT to be expected ?
25. 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
26. Where are you likely to find the strongest winds close to the ground?
27. A wind speed of 350 kt within a jet stream core should be world-wide regarded as
28. The dry adiabatic lapse rate has a value of
29. In Geneva, the local QNH is 994 hPa. The elevation of Geneva is 1411 FT. The QFE adjustment in Geneva is
30. While crossing a jet stream at right angles in Western Europe (3000 FT below its core) and OAT is decreasing, what would be the prevailing wind?
31. 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?
32. Dew point is defined as
33. The environmental lapse rate in an actual atmosphere
34.
(For this question use annex A) Of the four radio soundings, select the one that indicates ground fog:
35. Which statement is true for a conditionally unstable layer?
36. 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.This phenomenon is absolutely normal as you are crossing the jet core.
37. A layer is conditionally unstable if the air
38. An inversion is
39. Where, as a general rule, is the core of the polar front jet stream to be found?
40. If you are flying at FL 300 in an air mass that is 15°C warmer than a standard atmosphere, what is the outside temperature likely to be?
41. From which of the following pieces of information can the stability of the atmosphere be derived?
42. The QNH at an airfield located 200 metres above sea level is 1022 hPa. The air temperature is not available. What is the QFF?
43. The geostrophic wind is greater than the gradient wind around a low pressure system because the
44. The 0° isotherm is forecast to be at FL 50. At what FL would you expect a temperature of -6° C?
45. At the approach of a warm front (northern hemisphere) the wind direction changes from the surface up to the tropopause. The effect of this change is that the wind
46. Frontal fog is most likely to occur
47. What is the average height of the arctic jet stream core?
48. The most likely reason for radiation fog to dissipate or become low stratus is
49. An airmass is unstable when
50. An isothermal layer is a layer of air in which the temperature