Climate Century: Two-Box Energy Balance Lab Blender 5.2

A toy climate model: choose an emissions pathway, a climate sensitivity and the ocean's heat uptake, then watch CO₂, forcing, surface and deep-ocean temperature and sea level evolve from 2025 to 2125 on a Blender-modelled globe and coast.

Emission pathways

Live readouts

Pathway builder

Climate system

Display

Graphs

Emissions (shaded, GtC per year, left axis) and atmospheric CO2 (line, ppm, right axis). Click a graph to jump to that year

Surface temperature T (orange) and deep-ocean temperature T_d (blue) above pre-industrial, with the equilibrium temperature the current CO2 would eventually give (dashed). Grey: pinned comparison run

Sea-level rise since 2025 (semi-empirical thermal and ice response); grey: pinned comparison run

Experiment: equilibrium sensitivity, numerical against analytic

Question: does the integrated two-box model settle exactly at the analytic equilibrium warming ECS = F_2x/λ after a sudden CO₂ doubling, and how much of that does the ocean let you see in a century (TCR) or by 2100 on your pathway?

Numerical checks

The science