the evidence for Climate Change
- Created by: Charlotte Curness
- Created on: 12-04-14 10:27
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- Evidence for past climate change
- short term (recent)
- themometers/satellites since 1850
- ocean buoys
- ice response - how much they advance or retreat depending if it's warmer or cooler
- medium term (historical)
- dendrochonology (tree rings): a wide band indicates a warm and wet year. Trees are sensitive to annual changes in temperature, sunlight and precipitation.
- proxy data: journals, diaries, poems,record books
- long term (geological)
- ice cores: they monitor the bubbles trapped in layers of ice (levels of CO2 in the layers). Also measure the oxygen isotopes in the layers - lots of oxygen 16 indicates colder conditions
- pollen analysis: taking a core from the lake bed where pollen is preserved. Different plant species that grow in different climatic conditions have different pollen grains.
- short term (recent)
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