The Holocene onset in the southwestern South Atlantic

Sea-surface temperature reconstruction of the Quaternary western South Atlantic: New planktonic foraminiferal correlation function

“…These results are partially consistent with other paleoceanographic reconstructions from both Northern and Southern Hemispheres in the sense that SST negative anomalies were recorded from the onset and during the early Holocene, peaking at 8.2 cal kyr BP (Farmer et al, 2005;Ellison et al, 2006;Pivel et al, 2013). In the western South Atlantic, Pivel et al (2013) documented strong SST changes in the Brazil Current (25.84°S/45.2°W) between the onset of the Holocene and~8 cal kyr BP.…”

“…As highlighted by the authors, what the record actually shows is a trend of decreasing SSTs for some millennia during the early Holocene ending abruptly with negative anomalies of~2°C at around 8.2 cal kyr BP, evidencing that full interglacial conditions would only have started after that. However, independently of this particular event, Pivel et al (2013) found positive SST anomalies along the entire Holocene. In contrast to this, core GeoB2806-4 recorded SST strong negative anomalies, not only during the 8.2 event but also during the onset of the Holocene, especially at~11.7 cal kyr BP (Fig.…”

“…In the western South Atlantic, Pivel et al (2013) documented strong SST changes in the Brazil Current (25.84°S/45.2°W) between the onset of the Holocene and~8 cal kyr BP. As highlighted by the authors, what the record actually shows is a trend of decreasing SSTs for some millennia during the early Holocene ending abruptly with negative anomalies of~2°C at around 8.2 cal kyr BP, evidencing that full interglacial conditions would only have started after that.…”

Organic biomarker records spanning the last 34,800 years from the southeastern Brazilian upper slope: links between sea surface temperature, displacement of the Brazil Current, and marine productivity

“…This has confirmed the important role of major reorganization of Atlantic thermohaline circulation in abrupt climate change (Mahiques et al 2005(Mahiques et al , 2007Toledo et al 2007aToledo et al , 2008Nagai et al 2010;Pivel et al 2010Pivel et al , 2013Leonhardt et al 2013;Mendoza et al 2014;Chapori et al 2015). For the southwestern Atlantic, study of planktonic foraminiferal records has suggested that productivity was higher during deglaciation than in the last glacial maximum (LGM) and the Holocene (Toledo et al 2007b), although other studies have shown that productivity peaked during the LGM and the Younger Dryas in the same region (Mahiques et al 2007;Toledo et al 2008).…”

The Effects of Younger Dryas Orbital Parameter and Atmospheric pCO<sub>2</sub> Changes on Radiative Forcing and African Monsoonal Circulation

“…CC BY 4.0 License. temperature is consistently 0.5°C -3.5°C cooler than SST observations from between 11.16 and 13.15 ka (Figure 9; Dolven et al, 2002;Hoffmann et al, 2014;Kienast et al, 2001;Kim et al, 2002;Kim et al, 2003;Pelejero et al, 1999;Pivel et al, 2013;Ruehlemann et al, 1999;Steinke et al, 2001). This is especially true within the waters of Indonesia, as well as the southern Atlantic Ocean off the western coast of Africa and eastern coast of South America (Figure 9).…”