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CLIMATE and BIOMES

Explore a Pentagon report from 2003 on abrupt climate change, global warming, and national security implications. Learn how understanding climate can impact future wars and the survival of nations.

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CLIMATE and BIOMES

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  1. CLIMATE and BIOMES An Abrupt Climate Change Scenario and Its Implications for United States National Security (Pentagon Report, 2003). Global warming “should be elevated beyond a scientific debate to a US national security concern... future wars will be fought over the issue of survival rather than religion, ideology or national honour.” Understanding climate matters...

  2. CLIMATE I. Large Scale Determinants A. Solar Radiation 1. Average Radiation Budget - Solar Constant = 2 calories/cm2/min - 50% is reflected, absorbed, reradiated (Most ultraviolet light is reflected/absorbed) by the atmosphere

  3. - 50% is reflected, absorbed, reradiated (Most ultraviolet light is reflected/absorbed)

  4. ABSORBANCE Greenhouse effect

  5. A. Solar Radiation 1. Average Radiation Budget 2. Local Radiation Budget – Angle of incidence (latitude and season)

  6. A. Solar Radiation 1. Average Radiation Budget 2. Local Radiation Budget – Angle of incidence (latitude and season)

  7. LOW ENERGY LOW ENERGY HIGH ENERGY

  8. LOW ENERGY LOW ENERGY HIGH ENERGY

  9. As air rises: - decrease pressure - increase volume - decrease energy/unit volume - decrease temperature

  10. As air rises: - decrease pressure - increase volume - decrease energy/unit volume - decrease temperature Decrease temp, increase tendancy of water vapor to condense

  11. Climate and Biomes II. Determinants of Local Climates A. Topography

  12. Merriam’s Life Zones in the southwestern U.S.

  13. Valleys - Day

  14. Valleys - Night

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