| Literature DB >> 34074756 |
Stefanie Kaboth-Bahr1,2, William D Gosling3, Ralf Vogelsang4, André Bahr2, Eleanor M L Scerri4,5,6, Asfawossen Asrat7,8, Andrew S Cohen9, Walter Düsing10, Verena Foerster11, Henry F Lamb12,13, Mark A Maslin14,15, Helen M Roberts12, Frank Schäbitz11, Martin H Trauth10.
Abstract
In this study, we synthesize terrestrial and marine proxy records, spanning the past 620 ky, to decipher pan-African climate variability and its drivers and potential linkages to hominin evolution. We find a tight correlation between moisture availability across Africa to El Niño Southern Ocean oscillation (ENSO) variability, a manifestation of the Walker Circulation, that was most likely driven by changes in Earth's eccentricity. Our results demonstrate that low-latitude insolation was a prominent driver of pan-African climate change during the Middle to Late Pleistocene. We argue that these low-latitude climate processes governed the dispersion and evolution of vegetation as well as mammals in eastern and western Africa by increasing resource-rich and stable ecotonal settings thought to have been important to early modern humans.Entities:
Keywords: African paleoclimate; Walker and Hadley circulation; hominin evolution; orbital forcing
Year: 2021 PMID: 34074756 PMCID: PMC8201937 DOI: 10.1073/pnas.2018277118
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205