Wind: Sea Breeze and Land Breeze

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Wind Sea Breeze and Land Breeze
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EnergyTransfer in the Atmosphere

• Energy moves through the atmosphere in three
  different ways-conduction, convection and
  radiation
• Convection is the main way that air circulates in
  the atmosphere

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What is convection?

• Energy transfer due to differences in density
• Occurs in liquids and gases
• Warm air rises
• Cool air sinks
• Forms a convection cell

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Specific Heat

• The amount of energy required to raise the
  temperature of a substance 1degree celsius
• measured in joules
• see esrt for more information

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Which substance has a higher specific heat?
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Which substance will have a higher specific heat?
Land or Water? Why?
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Water will have a higher specific heat because it
will reflect the suns incoming solar
radiation....
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Therefore...water will take a longer time to heat
up, but will retain this heat for longer...so...
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A sea breeze will form...

• Sea Breeze wind moves from ocean to land
• The atmospheric pressure is higher over the ocean
  then over the land because the air is cooler
  during the day
• At night the air is cooler over the land, so a
  land breeze forms

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At night a land breeze develops...
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Wrap UP
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1. Why does the ocean heat up more slowly than the
   land?
2. Which substance has a higher specific heat-lead
   or ice?
3. Why do thunderstorms usually happen at the end of
   a hot summer day?
4. Why do people like to sit near the ocean on a hot
   summer day?