Reconstructed volcanic stratospheric sulfur injections and volcanic sulfate deposition over Greenland and Antarctica for the Bølling-Allerød/Younger Dryas transition (13.20-12.80 ka BP). ...

• Main Authors: Sigl, Michael, McConnell, Joseph R., Severi, Mirko, Fischer, Hubertus
• Format: Dataset
• Language: unknown
• Published: :unas 2021
• Subjects: 530 Physics; Antarctic; Dronning Maud Land; Greenland; Severi; West Antarctic Ice Sheet; Antarc*; Antarctica; EPICA; Greenland ice core; Greenland Ice core Project; Greenland Ice Sheet Project; ice core; Ice Sheet; NGRIP; North Greenland; North Greenland Ice Core Project
• Online Access: https://dx.doi.org/10.48350/167622; https://boris.unibe.ch/167622/

We used four polar ice cores - two from Greenland and two from Antarctica - to investigate volcanic sulphate deposition on polar ice sheets between 13,200 and 12,800 years BP. From Greenland, we employed discrete sulphate measurements from the Greenland Ice Sheet Project Two (GISP2; 72.97°N, 38.80°W) ice core (Mayewski et al., 1997) as well as sulphate measurements using Continuous Flow Analysis (CFA) (Bigler et al., 2002; Bigler et al., 2011) from the North Greenland Ice Core Project (NGRIP; 75.10°N, 42.33°W; 2941 m a.s.l.). From Antarctica, we used Fast Ion Chromatography (FIC) measurements from the EPICA Dronning Maud Land (EDML; 75.00°S, 00.07°E; 2892 m a.s.l.) ice core (Severi et al., 2007) as well as sulphur measurements (converted to sulphate) using Continuous Flow Analysis (CFA) coupled to an inductively coupled plasma mass spectrometer (ICPMS) (McConnell et al., 2017) from the WAIS (West Antarctic Ice Sheet) Divide ice core project (WD; 79.48°S, 112.11°W, 1766 m a.s.l.) (Sigl et al., 2016). The time ...