Organic carbon burial

we re-evaluate marine δ¹³C_org data to enhance the accuracy of the EM mixing model, reconstruct the degradation and burial patterns of marine and terrestrial OC separately, and then demonstrate the dynamics of OC burial since the Holocene. The analyzed proxies, including SPM concentration, OC content, and isotopic composition (δ¹³C_org and Δ¹⁴C_org), are based on an extensive new data set and previous studies (Jakobsson et al., 2017; Martens et al., 2019; McKay et al., 2008; Swärd et al., 2018; Yu et al., 2023). The SPM, surface sediments, and core sediment samples were collected from the northern Bering Sea, Chukchi Sea, and adjacent Canada Basin, regions where the response to ongoing global warming provides insights into the future state of the Arctic Ocean.