Climate change energy balance activity

A simple energy balance simulation illustrating the effect of changes in the sun's brightness, the Earth's reflectivity of sunlight (albedo) and the atmospheric greenhouse effects (emissivity) on Earth's climate.
The arrows and their numbers depict the flows of energy in Watts per square metre: yellow is sunlight and red is thermal (infra-red) radiative energy (which is how Earth cools to space). This has been updated from Version 1.5 to add an option to turn on and off the temperature calculation. Version 1.7 contains descriptions of the radiative flux arrows.