Figure 11.

Composite longitude‐height cross section of latent energy anomalies $L_{v}q\prime$(shaded), its temporal tendency $L_v\partial q\prime /\partial t$ and the anomalous zonal mass circulation $(\rho u\prime ,\rho w\prime )$ for the (a) 0.5CO₂, (b) 1CO₂, (c) 2CO₂, and (d) 4CO₂ simulations. The largest zonal flux vector is $\sim 0.2$ kg m⁻² s⁻¹. Contour interval 30 J kg⁻¹ d⁻¹.