Fig. 1
From: Reduced marine phytoplankton sulphur emissions in the Southern Ocean during the past seven glacials
Temperature proxies and ion fluxes at Dome Fuji (DF) and Dome C (EDC). a The δ18O (DF)14 and δD (EDC)7,8 records averaged over 1000 years. Marine isotope stage numbers for interglacials are also shown. b Fluxes of nssCa2+ at DF and EDC averaged over 1000 years. c Fluxes of nssSO42− at DF and EDC averaged over 1000 years. See Methods for DF chronology and flux calculations. The EDC fluxes are plotted on the AICC12 timescale53,54 using previously published ion data7,8,9,16 and accumulation rates53,54
