A warm humid air mass flows across a cold surface, its lower layers can be cooled to
produce fog. Unlike radiation fog it may firm at any time if the day and once formed
may persist for days.
Give this one a try later!
Advection fog
If the humidity of the cold air is high enough, dew point temperature can be reached
and cloud forms within the cold surface layer. Conditions necessary for this are clear
skies at night to allow the ground to become cold, light winds allowing much more air
to be brought in contact with cold surface, humid air the more the humid the air the
more likely it is that the dew pouring temperature will be reached.
Give this one a try later!
, Radiation Fog
The layer in the atmosphere where temperature drops with increasing height. It
extends from the surface to somewhere between 8 and 18 km depending on latitude.
(Australia commonly 10km)
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Troposphere
The point at which air does not get cooler as you increase in height.
Give this one a try later!
Tropopause
An increase in wind- if the wind becomes stronger the mixing in the fig layer increase
due to turbulence. As more air becomes involved it suffers less temp drop. Eventually
temp rises above dew point.
Increase in solar heating - after sunrise the increased solar heating of the surface
produces convection and increased mixing. Temp rises and often transformed into a
layer of low stratocumulus cloud ( just after sunrise fog usually thickens)
Give this one a try later!
produce fog. Unlike radiation fog it may firm at any time if the day and once formed
may persist for days.
Give this one a try later!
Advection fog
If the humidity of the cold air is high enough, dew point temperature can be reached
and cloud forms within the cold surface layer. Conditions necessary for this are clear
skies at night to allow the ground to become cold, light winds allowing much more air
to be brought in contact with cold surface, humid air the more the humid the air the
more likely it is that the dew pouring temperature will be reached.
Give this one a try later!
, Radiation Fog
The layer in the atmosphere where temperature drops with increasing height. It
extends from the surface to somewhere between 8 and 18 km depending on latitude.
(Australia commonly 10km)
Give this one a try later!
Troposphere
The point at which air does not get cooler as you increase in height.
Give this one a try later!
Tropopause
An increase in wind- if the wind becomes stronger the mixing in the fig layer increase
due to turbulence. As more air becomes involved it suffers less temp drop. Eventually
temp rises above dew point.
Increase in solar heating - after sunrise the increased solar heating of the surface
produces convection and increased mixing. Temp rises and often transformed into a
layer of low stratocumulus cloud ( just after sunrise fog usually thickens)
Give this one a try later!
