First 5 Flashcards

1
Q

Fast feedback

A

Immediate to 10s of years response to global temperature change

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2
Q

Slow feedbacks

A

1,000’s to 10,000’s of years response

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3
Q

Orbital forcing

A

0.25W/m^2

This is not enough energy to raise global temperature by 5 degrees Celsius. This indicates there are fast and strong Feedbacks amplifying the small forcing

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4
Q

Carbon cycle

A

Positive and negative feedback

Acts as a fertiliser for vegetation

30% of the CO2 from humans have been taken up by the ocean and vegetation. It is also amplifying the global temperature increase

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5
Q

Carbon cycle positive

A
Initial change
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  \ /
Climate warming
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  \ /
CO2 degas from oceans
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  \ /
Increase atmospheric CO2
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  \ /
CO2 acts as the
   |
   |
  \ /
Amplified warming
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6
Q

Carbon cycle negative

A
Initial change
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  \ /
Climate warming 
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Tectonic uplift of mountains
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  \ /
Exposed silicate rocks
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  \ /
Chemical weathering drawdown atmospheric CO2
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  \ /
Reduced warming
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