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The Influence Of Global Warming On Desertification

The Influence Of Global Warming On Desertification. Department of Civil and Environment System Engineering University of Incheon , South Korea. 2200919 박 치 만. Contents. Background and Purpose of Study Definition of Desertification Mechanism of Desertification Summary.

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The Influence Of Global Warming On Desertification

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  1. The Influence Of Global Warming On Desertification Department of Civil and Environment System Engineering University of Incheon, South Korea 2200919 박 치 만

  2. Contents • Background and Purpose of Study • Definition of Desertification • Mechanism of Desertification • Summary

  3. Average temp. of the earth goes up due to global warming gas like carbon. • The climate change become bigger. • Extremely high temperature or • heavy rain. • Arid area expends.(Desertification) Background & Purpose of Study

  4. Definition of Desertification The phenomenon that arid land is changed into desert by various causes like climate change and human activity

  5. Desertification

  6. Desertification

  7. Desertification

  8. Mechanism Of Desertification

  9. The Damage of Global Warming • Increase the number of extremely hot and cold days • Temperature rising accelerates hydrologic cycle, so a drought and a flood have become more frequently, extremely.

  10. Albedo Rising • Albedo - Overall average reflection coefficient of an object Desert emits energy as long wave radiation more than forest and crops, due to its high temperature and albedo. Temperature of air over desert goes down, and then descending current begin.

  11. Ascending & Descending air current • High pressure area is clear, because air is compressed as it drops. • Low pressure area is cloud, because air swells as it ascends.

  12. Summary 1 70 ③ Temperature Upper Air (Emitting radiation energy >Absorbing energy ) ① Solar radiation 100 ④ Descending air current ② Earth radiation ⑤ No rain , no cloud = clear 60 ⑥ Extension of Desert Desert Surface( Albedo: 30~60%) Air Environment Engineering 12

  13. Summary 2 • During descending air current, volume of air decrease, so temp. of air goes up due to adiabatic change. • Owing to continued descending air current, desert isn’t rain, more and more it becomes arid and expands.

  14. 감사합니다.Thank youありがとうございますDankeschön !Gracias Teşekkürederim

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