Volcanic stratospheric sulfur injections during the Holocene (past 11 500 years) from a bipolar ice-core array, HolVol version 1.1

Based on a set of continuous sulfate and sulfur records from four ice cores, one from Greenland and three from Antarctica, the HolVol v.1.0 database (Sigl et al., 2021, PANGAEA) included estimates of the magnitudes and approximate source latitudes of major volcanic stratospheric sulfur injection (VSSI) events for the Holocene (from 9500 BCE or 11 500 years BP to 1900 CE). In total, we reconstructed 850 volcanic eruptions with injections more than 1 teragram of sulfur (Tg S). These eruptions injected 7410 Tg S into the stratosphere. With the entire reconstructions based on the same four ice cores this reconstruction is best suited to study the frequency and spatial distribution of volcanic activity and resulting VSSI over long time periods and to study drivers and feedbacks between volcanism and climate through time (Sigl et al., 2022).