DOAJ Open Access 2024

Early warning signals of the termination of the African Humid Period(s)

Martin H. Trauth Asfawossen Asrat Markus L. Fischer Peter O. Hopcroft Verena Foerster +7 lainnya

Abstrak

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.

Topik & Kata Kunci

Science

Penulis (12)

Martin H. Trauth

Asfawossen Asrat

Markus L. Fischer

Peter O. Hopcroft

Verena Foerster

Stefanie Kaboth-Bahr

Karin Kindermann

Henry F. Lamb

Norbert Marwan

Mark A. Maslin

Frank Schaebitz

Paul J. Valdes

Format Sitasi

APA MLA BibTeX

Trauth, M.H., Asrat, A., Fischer, M.L., Hopcroft, P.O., Foerster, V., Kaboth-Bahr, S. et al. (2024). Early warning signals of the termination of the African Humid Period(s). https://doi.org/10.1038/s41467-024-47921-1

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Informasi Jurnal

Tahun Terbit: 2024
Sumber Database: DOAJ
DOI: 10.1038/s41467-024-47921-1
Akses: Open Access ✓