Water Vapor Feedback Loop (2D)

Water vapor is the largest amplifying feedback in Earth's climate system, and this 2D diagram makes the actual mechanism legible at a glance. An animated energy-flow ring shows CO2 forcing entering the surface, splitting into outgoing infrared and evaporated water vapor, and the vapor path feeding warmth back into the surface — its particle density and speed scaling with the real Clausius-Clapeyron calculation. A second panel plots that saturation-vapor-pressure curve directly so you can drag along it and read off values, and a third panel builds the equilibrium warming as an explicit, term-by-term geometric series climbing toward the closed-form answer.