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GLOBAL WARMING

GLOBAL WARMING. IN GROUPS:. EXAMINE EVIDENCE DECIDE ON RELEVANCE PREPARE EXPLANATION NOMINATE SPOKESPERSON. A. MODEL PROJECTIONS OF TEMPERATURE IN THE FUTURE. B. CARBON DIOXIDE RISING BUT NOT TEMPERATURE. C. RISING SEA LEVELS. D. CHANGES IN TEMPERATURE. E. GLOBAL POPULATION. F.

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GLOBAL WARMING

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  1. GLOBAL WARMING

  2. IN GROUPS: • EXAMINE EVIDENCE • DECIDE ON RELEVANCE • PREPARE EXPLANATION • NOMINATE SPOKESPERSON

  3. A MODEL PROJECTIONS OF TEMPERATURE IN THE FUTURE

  4. B CARBON DIOXIDE RISING BUT NOT TEMPERATURE

  5. C RISING SEA LEVELS

  6. D CHANGES IN TEMPERATURE

  7. E GLOBAL POPULATION

  8. F CHANGES IN THE SUN AND THEIR EFFECTS

  9. SOLAR CONTROL OF CLIMATE? The sun is a constantly changing series of explosions! The sun on 24/6/09 from the SOHO spacecraft

  10. Milankovitch cycles Named after the man who proposed them as the explanation of the ice ages in the Pleistocene. These are variations in the Earth’s orbit and inclination. The ellipticity of the earth’s orbit varies over a 100,000 year cycle. This changes the solar flux received at the earth by as much as 30%.

  11. Further, the tilt of the earth’s axis changes slightly over a 40,000 year cycle

  12. The tilt angle of the Earth also show precession

  13. WE ARE HERE

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