A multi-resolution ocean simulation of the anthropogenic radiocarbon transient

We have implemented ¹⁴C and further abiotic tracers (³⁹Ar, CFC-12, and SF₆) into the state-of-the-art ocean circulation model FESOM2. Different to other global ocean circulation models, FESOM2 employs unstructured meshes with variable horizontal resolution. This approach allows for improvements in areas which are commonly poorly resolved in global ocean modelling studies such as upwelling regions, while keeping the overall computational costs still sufficiently moderate. Here, we present results of a transient simulation running from 1850-2015 CE tracing the evolution of the bomb radiocarbon pulse with a focus on the evolution of marine radiocarbon ages. In addition we explore the potential of ³⁹Argon to complement ¹⁴C dating of marine waters.