Freezing fog exists if fog droplets ?
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Which of the following circumstances most favour the development of radiation fog ?
Fallstreaks or virga are ?
The range of wind speed in which radiation fog most likely to form Water or ice particles falling out of a cloud that evaporate before reaching ground. . 
At top of orographic waves in mountainous regions cloud most likely to be encountered Altocumulus lenticularis. . 
A cumulus congestus A cumulus that of great vertical extent. . 
Clouds in patches sheets or grey or whitish layers made up of elements resembling large pebbles or rollers together or not and always clear of ground are A cumulus that of great vertical extent. . Question 136-8
In mid latitudes tops of cumulus are often limited A temperature inversion. their growth usually limited a temperature inversion which marked the unusually uniform height of clouds also called fair weather cumulus. Question 136-9
Of what does lenticular cloud provide evidence A temperature inversion. their growth usually limited a temperature inversion which marked the unusually uniform height of clouds also called fair weather cumulus. Question 136-10
The formation of morning fog before sunrise possible if Air temperature dew point are equal or close to one another. their growth usually limited a temperature inversion which marked the unusually uniform height of clouds also called fair weather cumulus. Question 136-11
What the difference between radiation fog and advection fog 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 forms due to surface cooling at night in a light wind steaming fog the same as arctic smoke or sea smoke is caused cold air moving over a warm surface advection fog forms when warm humid air flows over a cold surface frontal fog most likely to occur in advance of a warm front it due to rain falls from warm air into cold air. Question 136-12
When fog reported visibility below 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. mist defined as visibility between 1 5 kilometers below 1 km we talk about fog. Question 136-13
When visibility reduced water droplets to less than 1000 metres it classified as 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. mist defined as visibility between 1 5 kilometers below 1 km we talk about fog. Question 136-14
Which cloud type may indicate presence of severe turbulence Altocumulus lenticularis. mist defined as visibility between 1 5 kilometers below 1 km we talk about fog. Question 136-15
Which true of advection fog It can appear suddenly day or night. advection fog forms when warm humid air flows over a cold surface so it can appear suddenly day or night when a warm front coming radiation fog forms due to surface cooling at night in a light wind steaming fog the same as arctic smoke or sea smoke is caused cold air moving over a warm surface advection fog forms when warm humid air flows over a cold surface frontal fog most likely to occur in advance of a warm front it due to rain falls from warm air into cold air. Question 136-16
Which of following sets of conditions are most likely to lead to formation of advection fog A mild moist airstream flowing over colder surfaces with wind speed less than 5 kt. advection fog forms when warm humid air flows over a cold surface as wind speed increases there more likelihood of turbulence cloud forming advection fog forms when warm humid air flows over a cold surface radiation fog forms due to surface cooling at night in a light wind steaming fog the same as arctic smoke or sea smoke is caused cold air moving over a warm surface frontal fog most likely to occur in advance of a warm front it due to rain falls from warm air into cold air. Question 136-17
Which of following types of cloud can extend over low medium and high cloud levels A mild moist airstream flowing over colder surfaces with wind speed less than 5 kt. . Question 136-18
Which of following types of clouds are evidence of unstable air conditions A mild moist airstream flowing over colder surfaces with wind speed less than 5 kt. . Question 136-19
Which type of fog can not be formed over water A mild moist airstream flowing over colder surfaces with wind speed less than 5 kt. radiation fog forms due to surface cooling at night in a light wind steaming fog the same as arctic smoke or sea smoke is caused cold air moving over a warm surface advection fog forms when warm humid air flows over a cold surface frontal fog most likely to occur in advance of a warm front it due to rain falls from warm air into cold air. Question 136-20
Stratus formed turbulence will occur when In friction layer mixing occurs turbulence the condensation level situated below top of turbulent layer. turbulence cloud formed within turbulence layer because mixing of air modifies temperature. Question 136-21
Radiation fog most frequently occurs in High pressure systems over land. turbulence cloud formed within turbulence layer because mixing of air modifies temperature. Question 136-22
What kind of fog often observed in coastal region of newfoundland in spring time High pressure systems over land. advection of warm air over a cold surface => the air will cool bellow ==> advection fog indication = coastal region warm moist air from sea traveling over cold surface of coast => advection fog. Question 136-23
Which statement correct Fog can be supercooled can also contain ice crystals. advection of warm air over a cold surface => the air will cool bellow ==> advection fog indication = coastal region warm moist air from sea traveling over cold surface of coast => advection fog. Question 136-24
The cloud type most applicable to square 3c 355 Fog can be supercooled can also contain ice crystals. . Question 136-25
The cloud type most applicable to square 2d 356 Fog can be supercooled can also contain ice crystals. square 2d 7000 ft to 18000 ft the most applicable cloud type are ns as. Question 136-26
The cloud most likely to be experienced in square 1e 357 Fog can be supercooled can also contain ice crystals. the magic drawing we can exclude ac as above 18000 ft cb will be met after a cold front. Question 136-27
If radiation fog forms on a clear night with light winds increase in wind speed from 5 kt to 13 kt will most likely Cause fog to lift become low stratus. the magic drawing we can exclude ac as above 18000 ft cb will be met after a cold front. Question 136-28
Clouds will mainly consist of supercooled water droplets when temperature Cause fog to lift become low stratus. the magic drawing we can exclude ac as above 18000 ft cb will be met after a cold front. Question 136-29
Frontal fog can be formed Condensation of air saturated evaporation of precipitation. the magic drawing we can exclude ac as above 18000 ft cb will be met after a cold front. Question 136-30
Advection of very cold air over a warm sea current can cause Condensation of air saturated evaporation of precipitation. steaming fog the same as arctic smoke or sea smoke is caused cold air moving over a warm surface 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 frontal fog most likely to occur in advance of a warm front it due to rain falls from warm air into cold air. Question 136-31
As a result of diurnal variation radiation fog lifted and a cloud cover formed which statement true Low stratus will develop caused increasing wind speed. radiation fog occurs over land (most commonly inland) on clear moist nights when wind speed less than about 5 kt it forms after sunset as wet ground begins to cool producing condensation in nearby air morning solar radiation heats ground this generates increasing wind above radiation fog entrains drier air accelerates dissipation note in summer radiation fog layers are most often thin due to short nights in winter however under stationary synoptic situations radiation fog can last days. Question 136-32
In which situation advection fog most likely to form An air mass moving inland from coast in winter. this mass of air relatively warm full of moisture will be cooled bellow contact with inland cold ground condensation will occur advection fog will be created. Question 136-33
About ten identical clouds are in sky well isolated from one another dense with well defined contours developping vertically in a cauliflower shape the side of these clouds lit the s is bright white their base relatively dark essentially horizontal and at fl 30 and their tops at fl 150 these clouds are An air mass moving inland from coast in winter. this mass of air relatively warm full of moisture will be cooled bellow contact with inland cold ground condensation will occur advection fog will be created. Question 136-34
Which of following cloud types classified as low level cloud An air mass moving inland from coast in winter. Cqb15 july 2011 sc stratocumulus (low level) cs cirrostratus (high level) as altostratus (medium level) ac altocumulus (medium level). Question 136-35
Which of following cloud types found at high level An air mass moving inland from coast in winter. Cqb15 july 2011 cs cirrostratus (high level) sc stratocumulus (low level) st stratus (low level) ac altocumulus (medium level) . Question 136-36
Which one of displayed cloud forms representative of a cumulus 375 An air mass moving inland from coast in winter. Cqb15 july 2011 cs cirrostratus (high level) sc stratocumulus (low level) st stratus (low level) ac altocumulus (medium level) . Question 136-37
Which one of following cloud types can be characterised the optical phenomenon called halo An air mass moving inland from coast in winter. they are produced the ice crystals in cirrus clouds high the particular shape orientation of crystals responsible the type of halo observed light reflected refracted the ice crystals may split up into colors because of dispersion the crystals behave like prisms mirrors refracting reflecting sunlight between their faces sending shafts of light in particular directions. Question 136-38
Which cloud type genus described the following definition 'greyish or bluish cloud sheet or layer of striated fibrous or uniform appearance totally or partly covering sky and having parts thin enough to reveal s at least vaguely as through ground glass this genus does not show halo phenomena' An air mass moving inland from coast in winter. cirrus (ci) detached clouds in form of white dedicate filaments or white or mostly white patches or narrow bands these clouds have fibrous (hair like) appearance or a silky sheen or both cirrocumulus (cc) thin white patch sheet or layer of cloud without shading composed of very small elements in form of grains ripples etc merged or separate more or less regularly arranged most of elements have an apparent width of less than one degree cirrostratus (cs) transparent whitish cloud veil of fibrous (hair like) or smooth appearance totally or partly covering sky generally producing halo phenomena altostratus (as) greyish or bluish cloud sheet or layer of striated fibrous or uniform appearance totally or partly covering sky having parts thin enough to reveal sun at least vaguely as through ground glass altostratus cloud does not show halo phenomena altocumulus (ac) white or grey or both white grey patch sheet or layer of cloud generally with shading composed of laminae rounded masses rolls etc which are sometimes partly fibrous or diffuse which may or may not be merged most of regularly arranged small elements usually have an apparent width of between one five degrees nimbostratus (ns) grey cloud layer often dark appearance of which rendered diffuse more or less continuously falling rain or snow which in most cases reaches ground it thick enough throughout to blot out sun stratocumulus (sc) grey or whitish or both grey whitish patch sheet or layer of cloud which almost always has dark parts composed of tessellations rounded masses rolls etc which are non fibrous (except virga) which may or may not be merged most of regularly arranged small elements have an apparent width of more than five degrees stratus (st) generally grey cloud layer with a fairly uniform base which may give drizzle ice prisms or snow grains when sun visible through cloud its outline clearly discernible stratus does not produce halo phenomena except possible at very low temperatures cumulus (cu) detached clouds generally dense with sharp outlines developing vertically in form of rising mounds domes or towers of which bulging upper parts often resembles a cauliflower the sunlit parts of these clouds are mostly brilliant white their base relatively dark nearly horizontal cumulonimbus (cb) heavy dense cloud with a considerable vertical extent in form of a mountain or huge towers at least part of its upper portion usually smooth or fibrous or striated nearly always flattened this part often spreads out in shape of an anvil or vast plume under base of this cloud which often very dark there are frequently low ragged clouds ether merged with it or not precipitation sometimes in form of virga alto means height or upper air in meteorological context = medium level cirro from which cirrus obtained means 'wisp of hair' cumulo from which cumulus obtained means 'heap' clouds with this designator appear to be piled up these type clouds form in unstable layers of air the initial lifting may be due to convective lifting or forced (mechanical) lifting such as orographic frontal or convergence lifting if layer unstable air parcel will continue to rise producing a cumulo form cloud nimbo means 'rain' thus nimbostratus cumulonimbus are clouds from which precipitation occurs strato from which stratus obtained means 'layer' or 'layere clouds with this designator form in stable layers of air except stratocumulus type which forms in a thin unstable layer of air. Question 136-39
What cloud type can produce freezing rain An air mass moving inland from coast in winter. cirrus (ci) detached clouds in form of white dedicate filaments or white or mostly white patches or narrow bands these clouds have fibrous (hair like) appearance or a silky sheen or both cirrocumulus (cc) thin white patch sheet or layer of cloud without shading composed of very small elements in form of grains ripples etc merged or separate more or less regularly arranged most of elements have an apparent width of less than one degree cirrostratus (cs) transparent whitish cloud veil of fibrous (hair like) or smooth appearance totally or partly covering sky generally producing halo phenomena altostratus (as) greyish or bluish cloud sheet or layer of striated fibrous or uniform appearance totally or partly covering sky having parts thin enough to reveal sun at least vaguely as through ground glass altostratus cloud does not show halo phenomena altocumulus (ac) white or grey or both white grey patch sheet or layer of cloud generally with shading composed of laminae rounded masses rolls etc which are sometimes partly fibrous or diffuse which may or may not be merged most of regularly arranged small elements usually have an apparent width of between one five degrees nimbostratus (ns) grey cloud layer often dark appearance of which rendered diffuse more or less continuously falling rain or snow which in most cases reaches ground it thick enough throughout to blot out sun stratocumulus (sc) grey or whitish or both grey whitish patch sheet or layer of cloud which almost always has dark parts composed of tessellations rounded masses rolls etc which are non fibrous (except virga) which may or may not be merged most of regularly arranged small elements have an apparent width of more than five degrees stratus (st) generally grey cloud layer with a fairly uniform base which may give drizzle ice prisms or snow grains when sun visible through cloud its outline clearly discernible stratus does not produce halo phenomena except possible at very low temperatures cumulus (cu) detached clouds generally dense with sharp outlines developing vertically in form of rising mounds domes or towers of which bulging upper parts often resembles a cauliflower the sunlit parts of these clouds are mostly brilliant white their base relatively dark nearly horizontal cumulonimbus (cb) heavy dense cloud with a considerable vertical extent in form of a mountain or huge towers at least part of its upper portion usually smooth or fibrous or striated nearly always flattened this part often spreads out in shape of an anvil or vast plume under base of this cloud which often very dark there are frequently low ragged clouds ether merged with it or not precipitation sometimes in form of virga alto means height or upper air in meteorological context = medium level cirro from which cirrus obtained means 'wisp of hair' cumulo from which cumulus obtained means 'heap' clouds with this designator appear to be piled up these type clouds form in unstable layers of air the initial lifting may be due to convective lifting or forced (mechanical) lifting such as orographic frontal or convergence lifting if layer unstable air parcel will continue to rise producing a cumulo form cloud nimbo means 'rain' thus nimbostratus cumulonimbus are clouds from which precipitation occurs strato from which stratus obtained means 'layer' or 'layere clouds with this designator form in stable layers of air except stratocumulus type which forms in a thin unstable layer of air. Question 136-40
Frontal fog most likely to dissipate After passage of a warm front. the question asks 'dissipation' of frontal fog not how it occurs! frontal fog likely to occur in advance of a warm front due to rain falls from warm air to cold air frontal fog most likely to dissipate after passage of a warm front.
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