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On the cause of abrupt vegetation collapse in North Africa during the Holocene: Climate variability vs. vegetation feedback
- Source :
- Geophysical Research Letters. 33
- Publication Year :
- 2006
- Publisher :
- American Geophysical Union (AGU), 2006.
-
Abstract
- The abrupt desertification over the northern Africa in the mid-Holocene is studied in both a complex and a simple coupled climate-vegetation model. In contrast to the previous mechanism that relies on strong positive vegetation-climate feedback and the resulted multiple equilibria, we propose a new mechanism in which the abrupt desertification is caused by low frequency climate variability, rather than a positive vegetation-climate feedback. The implication of this new mechanism to modelling and observation is also discussed.
Details
- ISSN :
- 00948276
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Geophysical Research Letters
- Accession number :
- edsair.doi...........506da734c181fcaef2016de4005b1e61