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Fronts and Frontal Rainfall PowerPoint Presentation
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Fronts and Frontal Rainfall

Fronts and Frontal Rainfall

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Fronts and Frontal Rainfall

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  1. Fronts and Frontal Rainfall Fronts and Frontal Rainfall

  2. A front marks the boundary between two air masses of different density. It is really important to remember that air massesnever mix- it’s just physics! There are three types of front. Cold Warm Occluded Fronts and Frontal Rainfall Here the warm and cold air have caught each other.

  3. Here we can see the cold front, this is also called a leading edge, it is the start of colder air. Fronts and Frontal Rainfall Ironically, the air coming is colder than this air… what do I mean?

  4. Fronts and Frontal Rainfall In a more simple format it looks like this…. But this leaves a problem, how do they pass each other?

  5. Warm Stratus cloud- continuous rain. Cold Fronts and Frontal Rainfall Frontal Rainfall Cumulonimbus thunder and lightening. Cold Warm

  6. 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. Fronts and Frontal Rainfall

  7. 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. Fronts and Frontal Rainfall