Changes in oceanic radiocarbon and CFCs since the 1990s

This directory contains the MITgcm ECCOv4-TM simulation output used in "Changes in oceanic radiocarbon and CFCs since the 1990s" (Lester et al., 2023) submitted to the Journal of Geophysical Research: Oceans. Ocean tracer simulations were created using transports matrices (TMs) derived from state estimates from the Estimating the Climate and Circulation of the Ocean version 4 (ECCOv4) based on a global configuration of the MITgcm model (MITgcm ECCOv4-TM). The monthly-mean TMs and the transport matrix method was used to simulate CFC-11, CFC-12 and abiotic DIC and ¹⁴C in DIC. CFC concentrations were converted to partial pressures (pCFC) by dividing by their solubility functions.<br> <br> Output is provided as Matlab .mat files. Files are named as MITgcm_ECCOv4TM_XXX.mat, where XXX is one of D14C, DIC14, DIC, pCFC11 and pCFC12 and contains annual mean fields for: Delta-14C [per mil], DIC14 concentration [mol/m³], DIC concentration [mol/m³], pCFC-11 concentration [ppt] and pCFC-12 concentration [ppt] respectively. For full details about the simulations and results see Lester et al. (2023).