Climate Change
Climate Change
Climate Change
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Atmospheric CO 2 and Temp<br />
• Current level of CO 2 is<br />
outside bounds of natural<br />
variability (meaning that<br />
even though CO 2 has<br />
varied in time the amount<br />
it has increased is even<br />
more than it has<br />
increased in the past)<br />
• Rate of change of CO 2 is<br />
also unprecedented<br />
Note: The graph does not prove causality. Temperature could increase for<br />
some other reason and CO 2 could be responding to that.<br />
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