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How will rising CO 2 affect vegetation in the Sahel?

How will rising CO 2 affect vegetation in the Sahel? Sebastian Bathiany , Martin Claussen , Victor Brovkin Max Planck Institute for Meteorology. Petit- Maire , 1990:. Sahel. Plants need food and water. CO 2 ( physiological ). Plants need food and water. CO 2 ( physiological ).

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How will rising CO 2 affect vegetation in the Sahel?

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  1. How will rising CO2affectvegetation in the Sahel? Sebastian Bathiany, Martin Claussen, Victor Brovkin Max Planck Institute forMeteorology

  2. Petit-Maire, 1990: Sahel

  3. Plantsneedfoodandwater CO2 (physiological)

  4. Plantsneedfoodandwater CO2 (physiological) Climate (mostimportant: rainfall)

  5. Model description MPI-ESM-LR HadGEM2-ES MIROC-ESM

  6. 21st century Change in vegetation cover fraction (abs. %)

  7. 21st century Change in vegetation cover fraction (abs. %)

  8. 21st century 22-23rd century Change in vegetation cover fraction (abs. %)

  9. Separation of effects

  10. Separation of effects Radphys Rad Phys Change in vegetation cover fraction (abs. %)

  11. Separation of effects Radphys Rad Phys Change in vegetation cover fraction (abs. %)

  12. Separation of effects Radphys Rad Phys Change in vegetation cover fraction (abs. %)

  13. Plantsneedfoodandwater CO2 (physiological) Climate (mostimportant: precipitation)

  14. Darker surface warms…

  15. but transpiration cools…

  16. vegFrac [abs %]

  17. vegFrac [abs %]

  18. Summary Vegetation cover change in the Saheldepends on the time horizon. Reasons for vegetation cover change are different in each model. Uncertain effects oppose each other. In the Sahel, vegetation expansion could cool. High resolution is necessary.

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