Table 4.

Estimated Values for C_bg, Δ_bg, and Δ_b Used in the Simulations

Variable	2014	2030
Cbg	1,823 ppb	2,132 ppb
Δbg	350‰	350‰
Δb	20‰	−41‰

Note. Values for 2014 are as given in section 2. Values for C_bg and Δ_b in 2030 are based on a business‐as‐usual scenario, Representative Concentration Pathway 8.5 (Graven, 2015; van Vuuren et al., 2011).