Magnitude, frequency and climate forcing of global volcanism during the last glacial period as seen in Greenland and Antarctic ice cores (60–9 ka) ...

• Main Authors: Lin, Jiamei, Svensson, Anders, Hvidberg, Christine S., Lohmann, Johannes, Kristiansen, Steffen, Dahl-Jensen, Dorthe, Steffensen, Jørgen Peder, Rasmussen, Sune Olander, Cook, Eliza, Kjær, Helle Astrid, Vinther, Bo M., Fischer, Hubertus, Stocker, Thomas, Sigl, Michael, Bigler, Matthias, Severi, Mirko, Traversi, Rita, Mulvaney, Robert
• Format: Text
• Language: unknown
• Published: Copernicus Publications 2022
• Subjects: 530 Physics; Antarc*; Antarctic; Greenland
• Online Access: https://dx.doi.org/10.48350/167435; https://boris.unibe.ch/167435/

Large volcanic eruptions occurring in the last glacial period can be detected by their accompanying sulfuric acid deposition in continuous ice cores. Here we employ continuous sulfate and sulfur records from three Greenland and three Antarctic ice cores to estimate the emission strength, the frequency and the climatic forcing of large volcanic eruptions that occurred during the second half of the last glacial period and the early Holocene, 60–9 kyr before 2000 CE (b2k). Over most of the investigated interval the ice cores are synchronized, making it possible to distinguish large eruptions with a global sulfate distribution from eruptions detectable in one hemisphere only. Due to limited data resolution and large variability in the sulfate background signal, particularly in the Greenland glacial climate, we only list Greenland sulfate depositions larger than 20 kg km−2 and Antarctic sulfate depositions larger than 10 kg km−2. With those restrictions, we identify 1113 volcanic eruptions in Greenland and 737 ...