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Question 173-1 : What is the name of the wind or air mass which gives to the main part of india its greatest proportion of precipitation ? [ Practice protocol ]
South west monsoon.
.humid monsoon begins in june in southern india to reach pakistan in july..the areas of the northern and central indian subcontinent heats up considerably during the hot summers, which causes a low pressure area over the northern and central indian subcontinent. to fill this void, the moisture laden winds the se trade winds from the indian ocean rush in to the subcontinent, the wind veers, it will be the south west monsoon.. 592.thunderstorms and showers of heavy rain can be expected.
Question 173-2 : What is the type, intensity and seasonal variation of precipitation in the equatorial region ?
Rainshowers, hail showers and thunderstorms occur the whole year, but frequency is highest during two periods april may and october november.
Question 173-3 : Assuming a generalised zonal system of world wind circulation, the se trade winds are applicable to zone. 318 ?
W
. 584
Question 173-4 : Assuming a generalised zonal system of world climatic and wind circulation, zone 't' is an area of . 318 ?
Subtropical high pressure systems.
. 584
Question 173-5 : Considering melbourne c in july, the weather is predominantly influenced by the zone of . 2538 ?
Subtropical high pressure, with the occasional passage of fronts originating in the adjacent zone of westerly waves.
.july is the southern hemisphere winter.. 2537. 584.the itcz is well north, the southern hemisphere sub tropical high pressure is over the centre of australia and the polar front is just south of melbourne.. 596.westerlies average latitude are 50°n and 50°s.
Question 173-6 : Assuming a generalised zonal system of world climatic and wind circulation, zone 'y' is an area of . 318 ?
Travelling low pressure systems.
. 584.travelling low pressure systems = travelling depressions.
Question 173-7 : Assuming a generalised zonal system of world wind circulation, the ne trade winds are applicable to zone . 318 ?
U.
. 584
Question 173-8 : Assuming a generalised zonal system of world climatic and wind circulation, zone 'u' is in area of . 318 ?
Ne trade winds.
. 584
Question 173-9 : The dotted line labelled y represents the . 322 ?
Mean position of the intertropical convergence zone itcz during january.
. 2537
Question 173-10 : What weather conditions are most likely to affect an approach to dakar during july. 323 ?
Wet and thundery due to the proximity of the intertropical convergence zone itcz
. 2537.in july, the itcz is in the vicinity of dakar. frequent and widespread thunderstorms are to be expected within the area of the itcz.
Question 173-11 : Weather conditions at bombay during early july are mainly influenced by the . 324 ?
Sw monsoon.
.se trade winds and ne trade winds converge on the itcz. in july the itcz will be to the north of bombay. 2537.indian ocean will be affected by se trade winds..the areas of the northern and central indian subcontinent heats up considerably during the hot summers, which causes a low pressure area over the northern and central indian subcontinent. to fill this void, the moisture laden winds the se trade winds from the indian ocean rush in to the subcontinent, the wind veers, it will be the sw monsoon.. 592
Question 173-12 : Weather conditions at bombay during january are mainly influenced by the . 325 ?
Ne monsoon
.se trade winds and ne trade winds converge on the itcz. in january the itcz will be to the south of bombay. 593.bombay will be affected by ne trade winds, it will be the ne monsoon.
Question 173-13 : Which one of the following local winds is a foehn wind ?
Chinook.
.a foehn wind is a warm, dry wind on the lee side of a mountain range. when the humid air goes over a mountain it loses its moisture and cools down a bit, but when it descends down the slope the temperature rises because of the compression. result is a strong, warm and dry wind. it develops all over the world, such as the chinook rocky mountains, over southern alberta in canada...the bora comes from the yugoslavian mountains to the adriatic sea. it is a katabatic wind meaning 'going downhill' , which means that it is cold, dry and often strong..the air from the bora wind comes from the top of the mountains, and it is set in motion because of the warmth below. because the wind moves down the mountain it strengthens..the bora develops during the winter. the word 'bora' means wind from the mountain in greek greece lies just below yugoslavia...the scirocco blows from southerly directions and can carry dust and sand which may reach europe. it is a hot and subsequently humid southeast to southwest winds originating as hot, dry desert air over northern africa, flowing northward into the southern mediterranean basin...the harmattan is a dry and dusty west african trade wind. it blows south from the sahara into the gulf of guinea between the end of november and the middle of march winter. it is a cold wind.
Question 173-14 : During the approach to mumbai 19°n 73°e on the west coast of india, you are listening to the atis on 15 july at 0700 lt..which of the following reports is most likely ?
.over west india mumbai is located over west coast of india , tropical revolving storms cylcones occur from may to november.. 602.you can expect rain showers shra , cb and reduced visibility due to precipitation.
Question 173-15 : On the west coast of india it can be said in general that the wind blows ?
For six month from the north east and for six month from the south west
Question 173-16 : What name is given to the low level wind system between the subtropical high pressure belt and the equatorial trough of low pressure itcz ?
Trade winds.
. 596.the subtropical high pressure belt is located at 30°n/s..itcz moves along the year around the equator..ne and se trade winds are the low level wind systems located between the subtropical high pressure belt and the itcz.
Question 173-17 : What is a favourable synoptic situation for the development of a scirocco ?
Low pressure area in the western part of the mediterranean sea.
.sirocco is a mediterranean wind that comes from the sahara and reaches hurricane speeds in north africa and southern europe...it arises from a warm, dry, tropical airmass that is pulled northward by low pressure cells moving eastward across the mediterranean sea, with the wind originating in the arabian or sahara deserts. the hotter, drier continental air mixes with the cooler, wetter air of the maritime cyclone, and the counter clockwise circulation of the low propels the mixed air across the southern coasts of europe..the sirocco causes dusty dry conditions along the northern coast of africa, storms in the mediterranean sea, and cold wet weather in europe. the sirocco's duration may be as short as half a day or may last several days. many people attribute health problems to the sirocco either because of the heat and dust along the african coastal regions or because of the cool dampness in europe. the dust within the sirocco winds can cause abrasion in mechanical devices and penetrate buildings.sirocco winds reach a peak in march and in november when it is very hot, with a maximum speed of about 55 kt.. 612.low pressure area in the western part of the mediterranean is a favourable synoptic situation for the development of a sirocco.
Question 173-18 : What weather conditions are indications of the summer monsoon in india ?
Thunderstorms, showers of heavy rain.
Question 173-19 : Where do the trade winds blow ?
Between the horse latitudes and the doldrums.
.the doldrums is a colloquial expression derived from historical maritime usage for the area affected by the intertropical convergence zone.. 609.the trade winds blow between the horse latitudes and the itcz.
Question 173-20 : Where are easterly waves found ?
Between subtropical high pressure cells and itcz.
.easterly waves are long waves that occur within the trade wind belt, start over north western africa, and propagate toward the west in the lower tropospheric tradewind flow across the atlantic ocean...approximate location, amplitude and wavelength of easterly waves. 495..at first, an easterly wave has a small amplitude, and produces mild rain showers. powerful thunderstorms and the force of high altitude winds amplify the wave when atmospheric conditions are favourable. several severe thunderstorms begin to form, and eventually a tropical storm may develop... 638.thunderstorms are most likely to develop on the east side of the wave.
Question 173-21 : Which statement concerning the scirocco is correct ?
It blows from southerly directions and can carry dust and sand which may reach europe.
.sirocco is a mediterranean wind that comes from the sahara and reaches hurricane speeds in north africa and southern europe...it arises from a warm, dry, tropical airmass that is pulled northward by low pressure cells moving eastward across the mediterranean sea, with the wind originating in the arabian or sahara deserts. the hotter, drier continental air mixes with the cooler, wetter air of the maritime cyclone, and the counter clockwise circulation of the low propels the mixed air across the southern coasts of europe..the sirocco causes dusty dry conditions along the northern coast of africa, storms in the mediterranean sea, and cold wet weather in europe. the sirocco's duration may be as short as half a day or may last several days. many people attribute health problems to the sirocco either because of the heat and dust along the african coastal regions or because of the cool dampness in europe. the dust within the sirocco winds can cause abrasion in mechanical devices and penetrate buildings.sirocco winds reach a peak in march and in november when it is very hot, with a maximum speed of about 55 kt.. 612.low pressure area in the western part of the mediterranean is a favourable synoptic situation for the development of a sirocco.
Question 173-22 : What winds and air mass characteristics are mainly associated with the winter monsoon in the monsoon regions of the indian sub continent ?
North easterly winds bringing dry and hazy air.
.se trade winds and ne trade winds converge on the itcz, and in january, the itcz will be to the south of india, this is the winter monsoon.. 620.north easterly winds will bring dry and hazy air from the northern and central indian subcontinent.
Question 173-23 : The dotted line designated z represents the . 330 ?
Mean position of the intertropical convergence zone itcz during july.
. 2537
Question 173-24 : Which is true of nairobi kenya. 331 ?
There are two wet seasons.
Question 173-25 : The typical weather conditions affecting the darwin area during july are. 349 ?
Dry season mainly se winds visibility reduced by dust and haze.
.the itcz reaches its most northerly position in july. 618.red lines show the maximum extreme positions.. 596.winds affecting darwin in july are the se trade winds se trade winds and ne trade winds converge at the itcz..this is the dry season and dust and haze coming from the inland desert blown by the se trade winds will affect visibility.
Question 173-26 : The sw monsoon starts in the month of ?
June in southern india to reach pakistan in july.
.se trade winds and ne trade winds converge on the itcz. 2537.in july the itcz will be to the north of india, this is the summer monsoon sw monsoon..in january, the itcz will be to the south of india, this is the winter monsoon ne monsoon.. 620
Question 173-27 : In the trade wind belt between the surface and the 500 hpa level, which of the following is true ?
The air is relatively moist in the lower part and dry in the upper part.
500 hpa = fl 180.se trade winds and ne trade winds converge at the itcz intertropical convergence zone , they occur only in the lower part of the troposphere and are more pronounced over the oceans. in the trade winds there is a maximum of humidity as a result of the trade winds long sea passage..in the upper part, the air originates from the sub tropical high pressure belt, is sinking, warming adiabatically. if temperature increases, relative humidity will decrease, the upper part is relatively dry.
Question 173-28 : Which climatic type is to be expected between 10°n and 10°s ?
Tropical rain climate.
Cqb15 july 2011.
Question 173-29 : The position of the intertropical convergence zone ?
Shows more variation over the continents than over the oceans.
. 593.the intertropical convergence zone shows more variation in position over the continents than over the oceans.
Question 173-30 : Which of the following statements is correct concerning the mediterranean climate ?
The annual rainfall is significantly below 700 mm.
Question 173-31 : In which areas are easterly waves most likely to form ?
In the trade wind zone.
Cqb15 august 2011..similar to q855 answer between subtropical high pressure cells and itcz.
Question 173-32 : Concerning the following statements..1 south india summer monsoon is a ne monsoon..2 the dominant climate of australia is a dry climate...for those statements ?
1 is wrong, 2 is right.
Question 173-33 : Which of the following statements concerning a cold air pool is correct ?
Direction and speed of movements of cold air pools are difficult to forecast.
Question 173-34 : Which of the following is typical for the snow tundra climate ?
High pressure weather dominates in winter, with the sub soil being frozen.
Question 173-35 : The weather activity within a cold air pool is usually greatest ?
In the afternoon.
Question 173-36 : On which side of an easterly wave are thunderstorms most likely to develop ?
On the east side of the wave.
Easterly waves are 'long waves' that occur within the trade wind belt, start over north western africa, and propagate toward the west in the lower tropospheric tradewind flow across the atlantic ocean...approximate location, amplitude and wavelength of easterly waves. 495..at first, an easterly wave has a small amplitude, and produces mild rain showers. powerful thunderstorms and the force of high altitude winds amplify the wave when atmospheric conditions are favourable. several severe thunderstorms begin to form, and eventually a tropical storm may develop... 638.thunderstorms are most likely to develop on the east side of the wave.
Question 173-37 : In january an extended high pressure area is normally observed over ?
Siberia.
Question 173-38 : How is the mediterranean climate best described ?
Anticyclonic and hot in summer, frontal depressions in winter.
Question 173-39 : Which of the following statements is correct concerning the savannah climate ?
There are significant yearly variations in rainfall with a wet and a dry period.
Question 173-40 : The mean height of the tropical zero degree isotherm is ?
16000 ft.
. the zero degree isotherm in the 'polar regions' is at ground level... the zero degree isotherm in 'temperate regions' is at mean sea level in winters and at about 10000 feet in summers... the zero degree isotherm in 'tropics' area 15° 30° n and s of the equator is at about 16000 feet... the zero degree isotherm at the equator is at about 18000 ft fl180.
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