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Certification > weather : Which of the following statements is correct concerning the mediterranean ?

Question 146-1 : The annual rainfall is significantly below 700 mm in winter it is influenced only by the subtropical high pressure belt hot summers alternate with cold winters it is not influenced by the westerlies

exemple 246 the annual rainfall is significantly below 700 mm.the annual rainfall is significantly below 700 mm.

In which areas are easterly waves most likely to form ?

Question 146-2 : In the trade wind zone in the subtropical high pressure belt between 20° and 35° north or south in the region of the equator between 0° and 5° north or south just north of the prevailing westerlies

Cqb15 august 2011 .similar to q855 answer between subtropical high pressure cells and itcz exemple 250 in the trade wind zone.in the trade wind zone.

Concerning the following statements .1 south india summer monsoon is a ne ?

Question 146-3 : 1 is wrong 2 is right 1 is wrong 2 is wrong 1 is right 2 is right 1 is right 2 is wrong

exemple 254 1 is wrong, 2 is right.1 is wrong, 2 is right.

Which of the following statements concerning a cold air pool is correct ?

Question 146-4 : Direction and speed of movements of cold air pools are difficult to forecast cold air pools normally disappear at night cold air pools can only be active for several hours during summer cold air pools are more active over the sea than over land areas

exemple 258 direction and speed of movements of cold air pools are difficult to forecast.direction and speed of movements of cold air pools are difficult to forecast.

Which of the following is typical for the snow tundra climate ?

Question 146-5 : High pressure weather dominates in winter with the sub soil being frozen travelling depressions during winter time temperatures generally between +5°c and +18°c throughout the whole year high pressure weather dominates in summer

exemple 262 high pressure weather dominates in winter, with the sub-soil being frozen.high pressure weather dominates in winter, with the sub-soil being frozen.

The weather activity within a cold air pool is usually greatest ?

Question 146-6 : In the afternoon early in the morning at noon in the late evening

exemple 266 in the afternoon.in the afternoon.

On which side of an easterly wave are thunderstorms most likely to develop ?

Question 146-7 : On the east side of the wave on the west side of the wave on the north side of the wave on the south 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 exemple 270 on the east side of the wave.on the east side of the wave.

In january an extended high pressure area is normally observed over ?

Question 146-8 : Siberia southern africa central europe south america

exemple 274 siberia.siberia.

How is the mediterranean climate best described ?

Question 146-9 : Anticyclonic and hot in summer frontal depressions in winter cyclonic and chilly in summer frontal depressions in winter depressions due to the polar front affect the weather throughout the whole year anticyclonic and warm the whole year

exemple 278 anticyclonic and hot in summer, frontal depressions in winter.anticyclonic and hot in summer, frontal depressions in winter.

Which of the following statements is correct concerning the savannah climate ?

Question 146-10 : There are significant yearly variations in rainfall with a wet and a dry period there are no significant yearly variations in rainfall but there are constant daily variations the annual mean temperature is above 25°c little or no rainfall occurs

exemple 282 there are significant yearly variations in rainfall with a wet and a dry period.there are significant yearly variations in rainfall with a wet and a dry period.

The mean height of the tropical zero degree isotherm is ?

Question 146-11 : 16000 ft 14000 ft 12000 ft 19000 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 exemple 286 16000 ft.16000 ft.

Which of the following statements concerning the airflow during the summer ?

Question 146-12 : Southwesterly airflow over india northeasterly airflow over india westerly airflow over japan easterly airflow over japan

exemple 290 southwesterly airflow over india.southwesterly airflow over india.

What are the typical weather conditions in a cold air pool in summer ?

Question 146-13 : Precipitation is predominant generally fine weather thunderstorms in the afternoon or evening fine weather with thunderstorms in the morning or forenoon ground fog formation is common

exemple 294 precipitation is predominant.precipitation is predominant.

The trade winds on the northern hemisphere blow from ?

Question 146-14 : North east north west south west

Ecqb01 2013... 596. exemple 298 north-east.north-east.

Central europe is situated in the zone of ?

Question 146-15 : Mid latitude climate dry climate subarctic climate snow climate

Ecqb01 2013 exemple 302 mid-latitude climate.mid-latitude climate.

Which of the following situations will be typical for the intertropical ?

Question 146-16 : Low pressure and instability hot mainly dry climate high pressure the whole year accompanied by strong prevailing winds high pressure the whole year accompanied by calm winds

Ecqb01 june 2013 exemple 306 low pressure and instability.low pressure and instability.

With regard to temperature which of the following is correct for the polar ?

Question 146-17 : The mean temperature of all months is below plus 10°c the mean temperature of all months is above 0°c%2c but temperatures as high as plus 10°c will never be reached the mean temperature of all months is below minus 10°c the mean temperature of the warmest month is 10°c or above and of the coldest month below minus 3°c

Easa 2014...the polar climate regions are characterized by a lack of warm summers every month in a polar climate has an average temperature below 10°c regions with polar climate cover more than 20% of the earth the sun shines for long hours in the summer and for many fewer hours in the winter a polar climate results in treeless tundra glaciers or a permanent or semi permanent layer of ice it has cool summers and very cold winters exemple 310 the mean temperature of all months is below plus 10°c.the mean temperature of all months is below plus 10°c.

What are the typical weather conditions in a westerly situation ?

Question 146-18 : Very changeable steady rainfall fine weather with strong westerly winds frequent thunderstorms during winter

. 596.westerlies average latitude are 50°n and 50°s.a series of fronts or depressions one after the other is referred to as a westerly wave the weather conditions are very changeable exemple 314 very changeable.very changeable.

How is an easterly wave identifiable on a surface weather chart ?

Question 146-19 : As a weak trough as a well developed depression as a ridge as a secondary depression

Easa 2014..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 exemple 318 as a weak trough.as a weak trough.

The main icing zone in the itcz is located between ?

Question 146-20 : Fl 160 fl 260 fl 300 fl 400 fl 250 fl 350 fl 50 fl 150

exemple 322 fl 160 - fl 260.fl 160 - fl 260.

The mean top of a thunderstorm cluster in the tropics is up to ?

Question 146-21 : 50000 ft 60000 ft 30000 ft 40000 ft

exemple 326 50000 ft.50000 ft.

What is the reason for seasonal changes in climate ?

Question 146-22 : Because the earth's spin axis is inclined to the plane of its orbit round the sun because the earth's orbital speed round the sun varies according to the time of the year because of the difference between the tropical year and the calendar year because the distance between the earth and the sun varies over the year

exemple 330 because the earth's spin axis is inclined to the plane of its orbit round the sun.because the earth's spin axis is inclined to the plane of its orbit round the sun.

In the central part of the atlantic ocean between 10°s and 20°s the ?

Question 146-23 : Se trade winds ne monsoon in winter and sw monsoon in summer ne trade winds sw winds throughout the whole year

.take care this question exists with 10°n and 20°n answer is 'ne trade winds' . 584.the question asks for the prevailing winds only between 10°n and 20°n above the atlantic ocean . 2537 exemple 334 se trade winds.se trade winds.

The intertropical convergence zone ?

Question 146-24 : Is characterized by different wind directions on both sides of the zone nearly always coincides with the geographical equator is always characterized by cb clouds with high tops forms the boundary between tropical and equatorial air

exemple 338 is characterized by different wind directions on both sides of the zone.is characterized by different wind directions on both sides of the zone.

In the indian ocean the name given to the violent tropical storms that can be ?

Question 146-25 : Tropical cyclone typhoon hurricane tornado

.cyclone from greek 'kuklos' means 'circle' is a generic term for all tropical revolving storms according to the geographical location the terminology differs.cylcone in the south western and northern pacific ocean and the south western indian ocean.hurricane as derived from huracàn a taino and carib god or hunraken the mayan storm in the northern atlantic ocean and the north eastern and south western pacific ocean east of 160e.typhoon from chinese t'ai fung located in in the north western pacific ocean . 603 exemple 342 tropical cyclone.tropical cyclone.

The average speed of a tropical cyclone is ?

Question 146-26 : Less than 60 kt from 60 kt to 140 kt from 140 kt to 180 kt from 180 kt to 250 kt

exemple 346 less than 60 kt.less than 60 kt.

What is the effect of a strong low level inversion ?

Question 146-27 : It promotes vertical wind shear it promotes extensive vertical movement of air it prevents vertical wind shear it results in good visual conditions near the surface

. 646 exemple 350 it promotes vertical wind shear.it promotes vertical wind shear.

You are flying with an outside air temperature of 12°c and a tas of 250 kt at ?

Question 146-28 : In clouds pushed up against the mountains moderate to severe mixed ice in clouds pushed up against the mountains moderate to severe clear ice over flat terrain away from fronts moderate to severe mixed ice over flat terrain moderate hoar frost

.in clouds pushed up against the mountains the lifting action orographic will mean that larger super cooled water droplets are present which will increase the severity of the icing to moderate to severe .at 12°c this is a temperature where there will be some clear ice and some rime ice exemple 354 in clouds pushed up against the mountains, moderate to severe mixed ice.in clouds pushed up against the mountains, moderate to severe mixed ice.

You intend to carry out a vfr flight over the alps on a fine and hot summer day ?

Question 146-29 : Morning mid day afternoon early evening

.the minimum temperature is reached not long after sunrise and on a fine and hot summer day convection currents will increase wind speed and turbulence along the day furthermore in the evening over the alps in summer risks of thunderstorm due to orographic lifting and instability is high .calmest conditions will be in the morning exemple 358 morning.morning.

At what time of the year are tornadoes most likely to occur in north america ?

Question 146-30 : Spring summer summer autumn winter autumn winter

Fonsvanheertum .tornadoes in n america are hurricanes no my book says that they appear from june until nov so shouldn't the answer summer autumn be correct. .hurricanes are tropical revolving storms . 493.tornadoes are large funnel cloud with water spouts associated with very large cumulonimbus clouds these cb clouds need maximum convective lifting and this will be there in spring/summer exemple 362 spring, summer.spring, summer.

In central europe when is the greatest likelihood for thunderstorms due to warm ?

Question 146-31 : Mid afternoon around midnight early morning late morning

exemple 366 mid-afternoon.mid-afternoon.

During which stage of thunderstorm development are rotor winds characterized by ?

Question 146-32 : Mature stage cumulus stage dissipating stage cumulus stage and mature stage

. 494 exemple 370 mature stage.mature stage.

Where is a squall line to be expected ?

Question 146-33 : In front of an active cold front behind a cold front in front of a cold front occlusion at higher levels at the surface position of a warm front

.when many individual thunderstorms organize into a nearly continuous line a squall line is born they can be more than 80 nm long and often form 40 to 130 nm ahead of advancing cold fronts racing along squall line thunderstorms blast the ground with torrents of rain and hail driven by winds gusting higher than 50 kt exemple 374 in front of an active cold front.in front of an active cold front.

What are squall lines ?

Question 146-34 : Bands of intensive thunderstorms unusual intensive cold fronts the surface weather associated with upper air troughs the paths of tropical revolving storms

.when many individual thunderstorms organize into a nearly continuous line a squall line is born they can be more than 80 nm long and often form 40 to 130 nm ahead of advancing cold fronts racing along squall line thunderstorms blast the ground with torrents of rain and hail driven by winds gusting higher than 50 kt exemple 378 bands of intensive thunderstorms.bands of intensive thunderstorms.

In which of these temperature bands is ice most likely to form on the ?

Question 146-35 : 0°c to 10°c +10°c to 0°c 20°c to 35°c 35°c to 50°c

exemple 382 0°c to -10°c0°c to -10°c

Which of the following statements is true regarding moderate to severe airframe ?

Question 146-36 : It is likely to occur in nimbostratus cloud it will occur in clear sky conditions it may occur in the uppermost levels of a cumulonimbus capillatus formation it always occurs in altostratus cloud

.ns nimbostratus produces heavy rain if the rain falls through a cold air mass below the freezing level moderate to severe airframe icing can occur .in clear air you can only have light airframe icing not moderate or severe on the top of a cumulonimbus temperature is too cold .it will not always occurs in altostratus cloud it dépends on the air mass temperature exemple 386 it is likely to occur in nimbostratus cloud.it is likely to occur in nimbostratus cloud.

Which of the following statements is true regarding moderate to severe airframe ?

Question 146-37 : It will not occur in clear sky conditions it always occurs in altostratus cloud it is unlikely to occur in nimbostratus cloud it will occur in the anvil part of the cumulonimbus cloud

.ns nimbostratus produces heavy rain if the rain falls through a cold air mass below the freezing level moderate to severe airframe icing is likely to occur .it will not always occurs in altostratus cloud it dépends on the air mass temperature .in clear air you can only have light airframe icing not moderate or severe on the top of a cumulonimbus temperature is too cold exemple 390 it will not occur in clear-sky conditions.it will not occur in clear-sky conditions.

Which of the following conditions is most likely to cause airframe icing ?

Question 146-38 : +fzra gr shsn pe

exemple 394 +fzra+fzra

Rime ice forms through the freezing onto aircraft surfaces of ?

Question 146-39 : Small supercooled water drops large supercooled water drops water vapour snow

. clear ice forms on an aircraft by the freezing of large supercooled water drops . rime ice forms through the freezing onto aircraft surfaces of small supercooled water drops exemple 398 small supercooled water drops.small supercooled water drops.

How does a pilot react to heavy freezing rain at 2000 ft/agl when he is unable ?

Question 146-40 : 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

.freezing rain is associated with warm fronts and warm occlusions in a warm front the freezing level is lower than behind in the warm sector and the slope means that freezing rain will be falling on anything underneath .at 2000 ft above ground level descending could be dangerous and you are not sure to reach enough warmer air to deice . 505.remain at the same altitude will give a dangerous build up of ice on the airframe .ascend into cold air means you will not lose the ice and climbing into frontal cloud will give more ice .the best solution is to turn back to get out of this freezing rain quickly exemple 402 he turns back before the aircraft loses manoeuvrability.he turns back before the aircraft loses manoeuvrability.

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