SNAB Evidence for global warming

  • Created by: Bryan
  • Created on: 02-06-13 13:21
How can temperature records be used to provide evidence for global warming?
long-term data sets allow changes in temperature to be analysed. For example the Central England Temperature series has records from 1659 to the present
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How can studying tree rings (Dendrochronology) help provide evidence of global warming?
If the climate is warmer and wetter then the rings will be wider. It is possible to look at tree ring widths over 3000 years into the past and this tells scientists a lot about the past climate
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How can pollen data be used to provide information related to global warming?
Pollen grains are preserved in peat bogs. By sampling at different levels in peat scientists are sampling at different points in time. Analysis of pollen shows what plants were growing and so what the climate was like when that peat was formed
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How can scientists used ice cores to provide data for global warming?
Air trapped in ice when it was formed thousands of years ago can be analysed. This gives information about temperatures and CO2 levels in the past
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What is the greenhouse effect?
Gases such as methane and CO2 trap energy from the sun and that emmited from the earth this warms the troposphere
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Other cards in this set

Card 2

Front

How can studying tree rings (Dendrochronology) help provide evidence of global warming?

Back

If the climate is warmer and wetter then the rings will be wider. It is possible to look at tree ring widths over 3000 years into the past and this tells scientists a lot about the past climate

Card 3

Front

How can pollen data be used to provide information related to global warming?

Back

Preview of the front of card 3

Card 4

Front

How can scientists used ice cores to provide data for global warming?

Back

Preview of the front of card 4

Card 5

Front

What is the greenhouse effect?

Back

Preview of the front of card 5

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