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    Please help
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    Instrumental records record climatic variables, say temperature. The readings from the instruments give measured values for temperature, you can just take a timeline of the data readout to construct a climate history. Most instrumental records dont go back that far, a few hundred years at best.

    Proxy records like ice cores or lake sediments can be used to reconstruct climate variables back hundreds of thousands of years, but its not a direct measurement. You infer the climate data from proxy indicators like pollen, dust or atmospheric composition.
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    Thank you man, that had my head going nuts.
 
 
 
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Updated: July 29, 2009

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