Frontal Depressions

Frontal Depressions

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Storyboard Description

MoYu Tanglong; Uh Uh Uh Eh Eh EEEEEGGGGGHHHH

Storyboard Text

  • Here we are in Dornoch Forest in England, one of the mid-latitude areas within 30 degrees to 60 degrees latitude that experiences frontal depressions.
  • Who am I? you ask. Well, you don't need to know that! I'm just your...sub-conscience! All you really need to know is what frontal depressions are!
  • So what is a Frontal Depression? Well, let's start by seeing what frontal depressions are caused by. Frontal depressions are caused by the boundaries or front distortion between two, different temperature air masses, the warmer of the two distorting and bulging out towards the colder air. The warm air travels in a wave like pattern across the colder air in a weather pattern that increases depression, called Frontogeneses. During this process, air pressure drops sharply at the depression and convergence area (where warm air rises rapidly, condenses, and leaves low pressure near the ground), the pressure increasing the farther out you go from the depression.
  • Here are the 4 main stages of a frontal depression:
  • Stage 2
  • Stage 1
  • Warm Air
  • Cold air
  • Warm air bulge
  • Cold air bulge
  • Stage 3
  • Stage 4
  • And now, here are the descriptions for each illustration: 
  • Stage 1 (figure 1): Two air masses are traveling in opposite directions, the cold air above the warm air mass, meeting along a line called a boundary or front. Stage 2 (figure 2): A small, circular wave disturbance forms between the two boundaries because of the jet stream friction as well as warm air tendencies to rise and cold, heavier air to fall. Stage 3 (figure 3): The system is now a distinct depression cycle and is almost complete. Stage 4 (figure 4): The cycle is complete and the air masses are now moving in a counterclockwise circulation
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