Fig. 2
From: Deglacial mobilization of pre-aged terrestrial carbon from degrading permafrost
Proxies for terrigenous organic matter mobilization compared with records of deglacial environmental changes. a Greenland NGRIP δ18O68; b rate of global sea-level change14; biomarker records obtained from sediment core SO178-13-6, mass accumulation rate (MAR) of c branched glycerol dialkyl glycerol tetraethers (brGDGTs) and d high molecular weight (HMW) n-alkanes (C27, C29, C31 and C33); e Paq ratio25 from nearby core XP07-C926; f accumulation rate (AR) of chlorophycean freshwater algae Pediastrum spp. from core LV28-4-4, note the logarithmic scale; g speleothem δ18O record from Dongge cave as indicator for East Asian summer monsoon intensity, which controls precipitation in the Amur Basin23; h summer insolation at 50°N. Circles at the bottom show age control points (AMS 14C dates) with 2σ uncertainties for cores LV28-4-4 (brown) and SO178-13-6 (green)46. Orange boxes highlight the warm phases Bølling-Allerød (B/A) and Pre-Boreal (PB), the Younger Dryas cold spell (YD) and Heinrich Stadial 1 (HS1) are marked in blue; grey boxes mark the periods of melt water pulse 1 A (MWP-1A) and MWP-1B
