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Climatology Climatic Zone 1320. At about what geographical latitude as average is assumed for the zone of prevailing westerlies? A) 10° N. B) 50° N. C) 80° N. D) 30° N. 1321. What is the type, intensity and seasonal variation of precipitation in the equatorial region? A) Rain showers, hail showers and thunderstorms occur the whole year, but frequency is highest during two periods: April-May and October- November. B) Precipitation is generally in the form of showers but continuous rain occurs also. The greatest intensity is in July. C) Warm fronts are common with continuous rain. The frequency is the same throughout the year D) Showers of rain or hail occur throughout the year; the frequency is highest in January. 1324. The reason for the fact, that the Icelandic low is normally deeper in winter than in summer is that: A) the strong winds of the north Atlantic in winter are favourable for the development of lows. B) the low pressure activity of the sea east of Canada is higher in winter. C) the temperature contrasts between arctic and equatorial areas are much greater in winter. D) converging air currents are of greater intensity in winter. 1328. The lowest relative humidity will be found: A) at the south pole. B) between latitudes 30 deg and 40 deg N in July. C) in equatorial regions. D) around 30 deg S in January. Tropical Climatology: 1329. Flying from Dakar to Rio de Janeiro in winter where would you cross the ITCZ? A) 7 to 120N. B) 0 to 70N. C) 7 to 120S. D) 12 to 180S. 1330. Horse latitudes are: A) only 40 deg N in the Western Pacific under the sub tropical highs. B) 40 deg S only. C) around the heat equator. D) in the region of the oceanic sub tropical highs in the Northern Hemisphere. 1331. The NE Monsoon affecting India, blows in ... and gives ... and ... conditions. A) summer, cool, dry. B) winter, cool, dry. C) winter, warm, wet. D) summer, warm, wet. 1332. Where is the ITCZ during the year? A) Moves in accordance with the heat equator. B) Always south of the equator. C) Doesn't move. D) Always north of the equator. 1333. An easterly wave is a: A) wave-like disturbance in the monsoon regime of India, moving from east to west, with severe convective activity ahead of its trough. B) small scale wave disturbance in the tropics, moving from east to west, with severe convective activity ahead of its trough. C) wave in a trade wind belt, moving from east to west, with severe convective activity in rear of its trough. D) disturbance in the higher levels associated with the equatorial easterly jet, moving from east to west, with severe convective activity in rear of its trough. 1334. Along the West coast of India the prevailing winds are the: A) SW monsoon in July and a SE monsoon in January. B) SE monsoon in July and a SW monsoon in January. C) NE monsoon in July and a SW monsoon in January. D) SW monsoon in July and a NE monsoon in January. 1335. Flying from Dakar to Rio de Janeiro, where is the ITCZ in the northern winter? A) 0 - 7 N B) 12 - 16 N C) 8 - 12 N D) above 8 S 1336. The Doldrums are: A) another name for the sub-tropical anticyclones. B) cols between weak fronts encountered in low latitudes. C) weak inter-tropical convergence zones. D) associated with light and variable monsoon winds. 1337. The ITCZ is best described as: A) where cold fronts are formed in the tropics. B) where the trade winds of the north and southern hemisphere meet. C) where the west winds meet the sub-tropical high pressure belt. D) where the Harmattan meets the NE trades in Africa. 1338. What weather conditions are indications of the summer monsoon in India? A) Thunderstorms, showers of heavy rain. B) Sandstorms. C) Stratus clouds and drizzle. D) Fog. 1339. What is the name of the low level winds between the subtropical high pressure belt and the ITCZ? A) Monsoon. B) Easterly wave. C) Low level jetstream. D) Trade winds. 1340. Along the West coast of India the prevailing winds are the: A) SW monsoon in July and a SE monsoon in January. B) SE monsoon in July and a SW monsoon in January. C) NE monsoon in July and a SW monsoon in January. D) SW monsoon in July and a NE monsoon in January. 1341. In July light easterly upper winds are apparent: A) all along the Equator. B) between 20N and 05S over the Pacific Ocean. C) at 10S. D) at 20N over Asia and Northern Africa. 1342. The transition from SW to NE monsoon in India occurs in: A) September, October, November. B) July, August, September. C) December, January, February. D) February, March, April. 1343. What is the Easterly wave? A) A wave travelling west-east. B) A wave travelling east-west. C) A wave travelling south-north. D) A wave travelling north-south. 1344. The ITCZ reaches its most northerly position: A) in September over Morocco. B) in August over Mexico. C) in July over eastern China. D) in January over Darwin. 1345. What weather conditions are most likely to affect an approach to Dakar during July? A) Reduced visibility due to the rising sand of the Harmattan. B) Dry and clear due to the influence of the Azores high pressure system. C) Wet and thundery due to the proximity of Intertropical convergence zone (ITCZ). D) Generally clear skies - NW trade winds. 1346. Referring to the picture, what wind would you expect at the position indicated? A) NE monsoon. B) Trade wind. C) Strong westerlies. D) Roaring forties. 1347. Which one of the following statements regarding the Intertropical convergence zone (ITCZ) is correct? A) The ITCZ does not change its position during the course of the year. B) Thunderstorms seldom occur within the area of the ITCZ. C) The ITCZ is always associated with a strong jet stream. D) Frequent and widespread thunderstorms are to be expected within the area of the ITCZ. 1348. When are the rains most likely in Equatorial Africa? A) June to July. B) December to January. C) March to May, October to November. D) March to May, August to October. 1349. 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) Doldrums. B) Monsoon. C) Westerly winds. D) Trade winds. 1350.General surface winds in West Africa with ITCZ to the north: A) East - West. B) SE trade winds to the north, NE trade winds to the south. C) NE trade wind to the north, SW monsoon to the south. D) West - East. 1351. Flying from Bangkok to Bombay, why does the wind at 30.000ft change from 15kts headwind in winter to a 20kt tailwind in summer? A) The Equatorial Easterly jet changes direction through 180 degrees. B) Freak weather conditions experienced on route. C) The Subtropical jet changes direction through 180 degrees. D) This is due to local changes in the upper winds due to the movement of the ITCZ. 1352. Which one of the following statements is correct concerning the movement of the ITCZ in the region of West Africa? A) It oscillates during the year between the Equator and 10 degrees North. B) It reaches its maximum southerly position of 5° S in January. C) It oscillates during the year between 10 degrees North and 10 degrees South. D) It reaches its maximum northerly position of 15° - 20° N in July. 1353. Horse latitudes are: A) Dry and clear due to the influence of the Azores high pressure system. B) Reduced visibility due to the rising sand of the Harmattan. C) Wet and thundery due to the proximity of Intertropical convergence zone (ITCZ). D) Generally clear skies - NW trade winds. 1354. The SW Monsoon affecting India, blows in ... and gives ... and ... conditions. A) summer, cool, dry B) summer, warm, wet C) winter, cool, dry D) winter, warm, wet 1355. Which wind systems converge on the ITCZ, when it lies at the equator? A) SE trade winds and NE trade winds. B) SW monsoon and NW trade winds. C) NW monsoon and SW trade winds. D) SW monsoon and NW monsoon. 1356Weather conditions at Bombay during January are mainly influenced by the: A) NW monsoon. B) SW monsoon. C) NE monsoon. D) SE monsoon. 1357. 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) 0° - 7° N. B) 8° - 12° S. C) 7° - 12° N. D) 3° - 8° S. 1358. Which of the following statements concerning the ITCZ is correct? A) Its furthest displacement from the equator is normally about 45° S. B) Its associated weather is invariably strong convergence and heavy cumuliform cloud. C) In the southern summer it is normally positioned centered south of the equator. D) It is normally fed with converging northern and southern trade winds. 1359. Where, during a flight from Marseille to Dakar, in July, may the ITCZ be encountered? A) Near the Canary Islands. B) In the vicinity of Dakar. C) At the latitudes of Gibraltar. D) At the latitudes of Algeria 1360. Weather conditions at Bombay during early July are mainly influenced by the A) NE monsoon and the proximity of the ITCZ. B) SW monsoon. C) passage of frontal system generated in the south Indian ocean. D) high incidence of tropical revolving storms originating in the Persian gulf.
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