Figure 4.

Parameter of climate-carbon cycle interaction in the conceptual model (a) and transient temperature sensitivity α computed for 100-year running segments (b) as functions of t/t_p. Shown are curves for t_p = 50 and 150 yr (thin and thick lines respectively) with β = 1.5 and 2.5 PgC/ppmv (dashed and solid lines correspondingly) and = 2 and 4 K (black and gray lines respectively) for κ = 28 ppmv/K.