When the temperature and dew point are less than one degree apart the weather conditions are most likely to be ?
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The morning following a clear calm night when the temperature has dropped to the dewpoint is likely to produce ?
Advection fog can be formed when ?
Steaming fog arctic sea smoke occurs in air With cold mass properties. steam fog also known as steaming fog evaporation fog frost smoke or arctic sea smoke occurs when evaporation takes place into cold air lying over warmer water it named analogy with condensed vapor or steam which appears above water which heated invisible vapor given off from water but almost immediately recondensed as it comes into contact with colder air the air has to be much colder than water so that convection currents develop formation also requires that there is a marked surface temperature inversion in air before it moves over sea or inland water bodies so as to preclude lapse rate becoming unstable through a deep layer a low air temperature typically 0°c or below so that a comparatively small amount of moisture can produce supersaturation otherwise heating process will outweigh tendency towards saturation because of these requirements this type of fog usually only formed over water surfaces near to a source of cold air such as frozen ground or ice sheets in polar regions one classic occurrence following sudden break up of sea ice to expose relatively warm water in steep sided fjords along parts of icelandic norwegian coasts similar environments elsewhere steam fog may reach a depth of 500 feet or more drift over adjacent land areas whilst relatively rare in temperate latitudes cold air which collects in then drifts down large river valleys out over a relatively warm sea surface in very light wind conditions can occasionally lead to formation of smaller much shallower areas of this type of fog in winter. 
Frontal fog most likely to occur In advance of a warm front. the passage of a warm front can be associated with areas of fog the types of fog just in advance of a warm front frontal fog just after passage advection fog frontal fog caused the additional moisture in air due to evaporation of rain or drizzle the different types of fog 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. 
Freezing fog exists if fog droplets In advance of a warm front. the passage of a warm front can be associated with areas of fog the types of fog just in advance of a warm front frontal fog just after passage advection fog frontal fog caused the additional moisture in air due to evaporation of rain or drizzle the different types of fog 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. 
Which of following circumstances most favour development of radiation fog Moist air over land during clear night with little wind. the passage of a warm front can be associated with areas of fog the types of fog just in advance of a warm front frontal fog just after passage advection fog frontal fog caused the additional moisture in air due to evaporation of rain or drizzle the different types of fog 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 134-8
Fallstreaks or virga are Water or ice particles falling out of a cloud that evaporate before reaching ground. . Question 134-9
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. . Question 134-10
At top of orographic waves in mountainous regions cloud most likely to be encountered Altocumulus lenticularis. . Question 134-11
A cumulus congestus A cumulus that of great vertical extent. . Question 134-12
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 134-13
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 134-14
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 134-15
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 134-16
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 134-17
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 134-18
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 134-19
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 134-20
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 134-21
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 134-22
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 134-23
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 134-24
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 134-25
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 134-26
Radiation fog most frequently occurs in High pressure systems over land. turbulence cloud formed within turbulence layer because mixing of air modifies temperature. Question 134-27
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 134-28
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 134-29
The cloud type most applicable to square 3c 355 Fog can be supercooled can also contain ice crystals. . Question 134-30
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 134-31
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 134-32
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 134-33
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 134-34
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 134-35
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 134-36
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 134-37
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 134-38
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 134-39
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 134-40
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) .
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