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Energy Budget - PowerPoint PPT Presentation


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Energy Budget. The amount of energy arriving at the Earth and leaving the Earth must be in balance . If more energy arrives than leaves, the Earth will warm up over time. Types of Energy Transfer. Radiation  energy transfer through a vacuum

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Presentation Transcript
energy budget
Energy Budget
  • The amount of energy arriving at the Earth and leaving the Earth must be in balance.
  • If more energy arrivesthan leaves, the Earth will warm up over time.
types of energy transfer
Types of Energy Transfer
  • Radiation  energy transfer through a vacuum
  • Conduction  Energy transfer by direct contact of particles
  • Convection  Energy Transfer through the movement of particles from one location to another
radiation
Radiation
  • energy from the sun is radiatedto the Earth.
conduction
Conduction
  • Very little effect on climate as conduction involves only shortdistance energy transfers
convection
Convection
  • Convection currents are caused by warm, less dense air risingand cooler, more dense air falling
  • On the ground, convection currents are seen as winds
ocean convection currents
Ocean Convection Currents
  • Note here the movement is NOT just about moving heatfrom the Equator to the Poles
  • Europeis most affected by these currents.
slide11

Ayr, Scotland

55oN latitude line

Cape Henrietta Maria

Both are on the coast, both are at 55oN

Do they have a similar climate?

slide12

Cape Henrietta Maria in May

 notice the ice!

Ayr, Scotland in May

 notice the palm trees!

which type of energy transfer will be influenced by human activities
Which type of Energy Transfer will be influenced by human activities?
  • Do human activities affect radiationfrom the sun?
  • Do human activities affect conductionthrough materials?
  • Do human activities affect convectionswinds?
  • Noto all of the above!
  • So how might humans affect climate?

We’ll talk about human effects tomorrow!

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