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Voting Question: how are scientists measuring climate change over long periods of time?

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  • Voting Question: how are scientists measuring climate change over long periods of time?


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Answer #1 | 19/12 2013 14:33
Here are the methods I can think off: -Weather stations positioned around the globe. -Weather Balloons -Comparing previous data to modern data -Highly sophisticated satellites that can monitor temperature across the globe. -Geological records stored within different layers of rock. -Glacial records based on the crystallization of water in glaciers. This can be used to tell both temperature and CO2 levels at the time the ice was formed.
Positive: 45 %
Answer #2 | 21/12 2013 09:32
How long do you mean ? Like 100 years ? They 'correct' the temperature record to show the right trend. Whereas for thousands of years they use tree rings. For hundreds of thousands they study core samples taken from Ice Sheets.
Positive: 39 %

Possible answer

An overview of climate and ... well as periods of climate change. Today, scientists ... global climate over time. Scientists have ...
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Positive: 45 %
Glaciers and climate change. ... To see a long-term climate record, scientists can drill and extract ... recession of the glacier's terminus over time are ...
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Positive: 40 %
... No It’s Warming : ... station dataset that are not the same thing as climate change. ... temperature changes over longer time periods.
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Positive: 26 %
Past Climates on Earth "Hark! The ... in this way over these long periods. The time scales and nature of the record ... to explain the long term climate ...
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Positive: 3 %

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