Atmosphere and dynamic equilibrium

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7 Terms

1
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Dynamic equilibrium

A combination of active processes that cancel each others effects so there is no overall change e.g. UV and Ozone

2
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Runaway climate

Any positive feedback mechanism where the feedback becomes continuous without the need for human action.

3
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Tipping point

Threshold that when exceeded leads to irreversible change in which human action will have no impact.

4
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Positive feedback mechanism

When the original change increases

5
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Negative feedback mechanism

When the original change decreases

6
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Give 2 examples of a negative feedback mechanism

  1. Cloud albedo

  2. Tree growth

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Give 2 examples of a positive feedback mechanism

  1. Melting permafrost

  2. Decomposition

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