Southeast African records reveal a coherent shift from high- to low-latitude forcing mechanisms along the east African margin across last glacial–interglacial transition

African hydroclimatic variability during the last 2000 years

“…Although a greater number of highly resolved records is required to draw robust conclusions, it appears that a generally in-phase relationship may exist between the southwestern Cape and the western summer rainfall zone, with both exhibiting signals in opposition to those observed in the eastern summer rainfall zone. This is consistent with the findings of Chevalier and Chase (2015), who identified a north-south dipole within the eastern summer rainfall zone during recent millennia.…”

“…south of 10° S), some records show the expected inverse pattern, i.e. an orbitally-driven early Holocene drought followed by generally wetter late Holocene conditions (Castaneda et al, 2007;Schefuß et al, 2011;Truc et al, 2013;Chevalier and Chase, 2015). However, in southwestern Africa, a largely in-phase relationship between the hemispheres has been found (Chase et al, 2009;Chase et al, 2010;Collins et al, 2011), contradicting the prediction of orbitally-driven north-south anti-phasing in Holocene hydroclimate trends.…”

Fluctuations of vegetation and climate over the last 75 000 years in the Savanna Biome, South Africa: Tswaing Crater and Wonderkrater pollen sequences reviewed

“…7) corresponds closely to Scott et al (2012), Truc et al (2013) and Chevalier and Chase (2015) showing only very minor differences. For Boreholes 1 and 2, the assumed age range of 25 075 and 29 045 cal yr BP is <2700 years older than the respective values given previously in Scott et al (2012).…”

“…In the case of Wonderkrater, aspects of the palynological and chronological interpretations of Scott (1982a), Scott and Thackeray (1987), Scott (1999a, b), Scott et al (2003Scott et al ( , 2008 have been questioned in recent research by Chase et al (2010), McCarthy et al (2010), Truc et al (2013) and Chevalier and Chase (2015) and some of these questions require further attention.…”

50,000 years of vegetation and climate change in the southern Namib Desert, Pella, South Africa

“…Bacon produces robust estimations of the probability density function (pdf) of the uncertainties associated with our pollen samples. That information, referred to as pdf age , was extracted and integrated in a framework to derive robust quantitative climate reconstructions (more details below and in Chevalier and Chase, 2015).…”