Trauth, Martin H;
Asrat, Asfawossen;
Fischer, Markus L;
Hopcroft, Peter O;
Foerster, Verena;
Kaboth-Bahr, Stefanie;
Kindermann, Karin;
... Valdes, Paul J; + view all
(2024)
Early warning signals of the termination of the African Humid Period(s).
Nature Communications
, 15
, Article 3697. 10.1038/s41467-024-47921-1.
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Abstract
The transition from a humid green Sahara to today’s hyperarid conditions in northern Africa ~5.5 thousand years ago shows the dramatic environmental change to which human societies were exposed and had to adapt to. In this work, we show that in the 620,000-year environmental record from the Chew Bahir basin in the southern Ethiopian Rift, with its decadal resolution, this one thousand year long transition is particularly well documented, along with 20–80 year long droughts, recurring every ~160 years, as possible early warnings. Together with events of extreme wetness at the end of the transition, these droughts form a pronounced climate “flickering”, which can be simulated in climate models and is also present in earlier climate transitions in the Chew Bahir environmental record, indicating that transitions with flickering are characteristic of this region.
| Type: | Article |
|---|---|
| Title: | Early warning signals of the termination of the African Humid Period(s) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/s41467-024-47921-1 |
| Publisher version: | http://dx.doi.org/10.1038/s41467-024-47921-1 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL SLASH UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10192334 |
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