Figure 4.

Precipitation estimate $L_{v}P\prime \simeq 〈m\prime 〉/{\tau }_c$ (solid black line, divided by a factor of 10 to facilitate comparison), its tendency $\partial P\prime /\partial t$ (dashed black line), horizontal MSE advection (gray dot dashed line), and the sum of vertical MSE advection and longwave radiative heating (gray solid) for the 0.5CO₂ (left) and 4CO₂ simulations (right), averaged over the 15°N/S latitude belt. Lines are in units of W m⁻² d⁻¹, except $P\prime$, which is in units of W m⁻².