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On the cause of abrupt vegetation collapse in North Africa during the Holocene: Climate variability vs. vegetation feedback
journal contributionposted on 2023-06-07, 17:17 authored by Zhengyu Liu, Yi WangYi Wang, Robert Gallimore, Michael Notaro, I Colin Prentice
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.
JournalGeophysical Research Letters
Department affiliated with
- Geography Publications
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