What condition may prevent the formation of "radiation fog"? Overcast cloud cover Calm wind Low spread Clear night, no clouds.
What process results in the formation of "advection fog"? Cold, moist air is being moved across warm ground areas Warm, moist air is moved across cold ground areas Cold, moist air mixes with warm, moist air Prolonged radiation during nights clear of clouds.
What process results in the formation of "orographic fog" ("hill fog")? Prolonged radiation during nights clear of clouds Warm, moist air is moved across a hill or a mountain range Cold, moist air mixes with warm, moist air Evaporation from warm, moist ground area into very cold air.
What factors are required for the formation of precipitation in clouds? High humidity and high temperatures The presence of an inversion layer Calm winds and intensive sunlight insolation Moderate to strong updrafts.
The formation of medium to large precipitation particles requires... a high cloud base. strong wind. an inversion layer. strong updrafts.
Which type of cloud is associated with prolonged rain? Cumulonimbus Cirrostratus Nimbostratus Altocumulus.
Regarding the type of cloud, precipitation is classified as... light and heavy precipitation. showers of snow and rain. prolonged rain and continuous rain. rain and showers of rain.
How is an air mass described when moving to Central Europe via the Russian continent during winter? Maritime tropical air Continental tropical air Continental polar air Maritime polar air.
The character of an air mass is given by what properties? Temperatures at origin and present region Wind speed and tropopause height Region of origin and track during movement Environmental lapse rate at origin.
The symbol labeled (1) as shown in the picture is a / an... front aloft. occlusion.
warm front. cold front.
The symbol labeled (2) as shown in the picture is a / an... front aloft. occlusion.
warm front. cold front.
The symbol labeled (3) as shown in the picture is a / an... front aloft. occlusion.
warm front. cold front.
What cloud sequence can typically be observed during the passage of a warm front? In coastal areas during daytime wind from the coast and forming of cumulus clouds, dissipation of clouds during evening and night Wind becoming calm, dissipation of clouds and warming during summer; formation of extended high fog layers during winter Squall line with showers of rain and thunderstorms (Cb), gusting wind followed by cumulus clouds with isolated showers of rain Cirrus, thickening altostratus and altocumulus clouds, lowering cloud base with rain, nimbostratus.
What clouds and weather can typically be observed during the passage of a cold front? In coastal areas during daytime wind from the coast and forming of cumulus clouds, dissipation of clouds during evening and night Strongly developed cumulus clouds (Cb) with showers of rain and thunderstorms, gusting wind followed by cumulus clouds with isolated showers of rain Cirrus, thickening altostratus and altocumulus clouds, lowering cloud base with rain, nimbostratus Wind becoming calm, dissipation of clouds and warming during summer; formation of extended high fog layers during winter.
What visual flight conditions can be expected within the warm sector of a polar front low during summer time? Visibilty less than 1000 m, cloud-covered ground Good visibility, some isolated high clouds Moderate to good visibility, scattered clouds Moderate visibility, heavy showers and thunderstorms.
What visual flight conditions can be expected after the passage of a cold front? Scattered cloud layers, visbility more than 5 km, formation of shallow cumulus clouds Good visiblity, formation of cumulus clouds with showers of rain or snow Medium visibility with lowering cloud bases, onset of prolonged precipitation Poor visibility, formation of overcast or ground-covering stratus clouds, snow.
A boundary between a cold polar air mass and a warm subtropical air mass showing no horizontal displacement is called... cold front. warm front. occluded front. stationary front.
What is the usual direction of movement of a polar front low? To the northwest during winter, to the southwest during summer To the northeast during winter, to the southeast during summer Parallel to the warm front line to the south Parallel to the the warm-sector isobars.
What pressure pattern can be observed during the passage of a polar front low? Rising pressure in front of the warm front, constant pressure within the warm sector, rising pressure behind the cold front Falling pressure in front of the warm front, constant pressure within the warm sector, rising pressure behind the cold front Falling pressure in front of the warm front, constant pressure within the warm sector, falling pressure behind the cold front Rising pressure in front of the warm front, rising pressure within the warm sector,
alling pressure behind the cold front.
What pressure pattern can be observed when a cold front is passing? Continually decreasing pressure Shortly decreasing, thereafter increasing pressure Continually increasing pressure Constant pressure pattern.
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