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Atmospheric System


The atmospheric system, including the natural greenhouse effect and energy balance (incoming shortwave radiation and outgoing longwave radiation)

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Atmospheric System


The atmospheric system, including the natural greenhouse effect and energy balance (incoming shortwave radiation and outgoing longwave radiation)

 
 

insolation = incoming solar radiation

The atmosphere is an open energy system receiving energy from both the sun and the earth.

Incoming radiation from the sun is short wave, outgoing radiation is long wave.

The sun's energy drives all weather systems and climates. Most is absorbed in tropical latitudes and redistributed to polar latitudes.

 

TASK:

  1. Watch video and make notes

  2. Read pp 426-433 and add to your notes

 
 

natural vs. enhanced greenhouse effect

The greenhouse effect is a natural process that enables life to exist on earth.

However, human activity is increasing the natural process, warming the climate and contributing to global warming and climate change.

This is the enhanced greenhouse effect.

 

TASK: Access the resources above. Draw a labelled diagram explaining the natural greenhouse effect. Write a paragraph explaining how human activity has created the enhanced greenhouse effect.

 

GREENHOUSE GASES

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Earth's Atmospheric energy balance

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Atmospheric Energy Balance

 
 
 
 

PLENARY

Explain the energy flows involved in the greenhouse effect. [5 marks]

 

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Global Energy Balance


Describe changes in the global energy balance and explain the role of feedback loops resulting from: solar radiation variations, global dimming, albedo changes and methane gas release

Global Energy Balance


Describe changes in the global energy balance and explain the role of feedback loops resulting from: solar radiation variations, global dimming, albedo changes and methane gas release

VARIATIONS IN SOLAR RADIATION

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TASK

  1. In small groups, plan and draw a large labelled diagram to explain one of the following causes of change in the global energy balance:

    • Variations in solar radiation (Milankovitch Cycles)

    • Global dimming

    • Positive feedback loops

    • Negative feedback loops

  2. Present to the class and complete the writing frame below

 
 
 

EXAM PRACTICE

Explain two factors, other than greenhouse gas release, that cause changes to the global atmospheric energy balance (3 + 3 marks)

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Enhanced Greenhouse Effect


The enhanced greenhouse effect and international variations in greenhouse gas sources and emissions, in relation to economic development, globalization and trade.

Enhanced Greenhouse Effect


The enhanced greenhouse effect and international variations in greenhouse gas sources and emissions, in relation to economic development, globalization and trade.