Aim: What are Regional Wind Systems

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Presentation transcript:

Aim: What are Regional Wind Systems Do Now: Compare and contrast High pressure systems to Low pressure systems. Low Pressure High Pressure

Low Pressure High Pressure

I. Local Winds Caused either by: Topographic effects (orographic lifting) or Variations in surface composition (Land or Water) * Land has a lower specific heat then the water * Granite = 0.79 Joules/gram x 0C Water = 4.18 Joules/gram x 0C

A. Sea Breeze - During the day, the land heats faster than the water, creating a low pressure area - the water is cooler, so a high pressure area is created. The wind blows from the high pressure over the water to the low pressure over the land, creating a sea breeze.

B. Land Breeze - At night, the land cools faster than the water, creating a high pressure area - the water is warmer since it heated all day, so a low pressure area is created The wind blows from the high pressure over the land to the low pressure over the sea, creating a land breeze.

Why do people go to the beach during the day?