A front marks the boundary between two air masses of different density. It is really important to...
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Transcript of A front marks the boundary between two air masses of different density. It is really important to...
A front marks the boundary between two air masses of different density.
It is really important to remember that air masses never mix- it’s just physics!
There are three types of front.
Cold Warm Occluded
Here the warm and cold air have
caught each other.
Here we can see the cold front, this is also called a
leading edge, it is the start of
colder air.
Ironically, the air coming is
colder than this air… what do I
mean?
In a more simple format it looks like this….
But this leaves a problem, how do they pass each other?
Cold
Warm
Cold Warm
Stratus cloud- continuous
rain.
Cumulonimbus thunder and lightening.
When warm air meets cold air, the warm air is forced to rise over the cold air, this is because
it is less dense. As the warm air rises, it cools, condenses, forms nimbo-stratus clouds and there is continuous rainfall.
When cold air meets warm air, the cold air is forced to sink under the warm air, this is
because it is more dense. As the cold air sinks it forces the warm air to rise. As the warm air
rises, it cools, condenses, forms cumulu-nimbus clouds and rains. This collision of air is particularly violent, often there may be thunder
and lightening.