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Temperature records over long periods. Since the 1850s temperatures have been measured using
thermometers giving a reliable and short term record of global temperature change.

Studying Peat bogs Peat is an accumulation of partially decayed organic matter,
mainly the remains of dead plants. In the anaerobic…

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There is massive stores of methane e.g. in permafrost ­ as temperatures increase these stores will thaw and release large amounts of
methane into the atmosphere.

A molecule of methane absorbs more infrared than CO2 however it doesn't stay in the atmosphere very long.

CO2: concentrations increase as more fossil…


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