Carbonator is a simple climate model. Unlike a full climate model that can tell us how climate variables evolve at different locations it can only tell us how a subset of variables change on a global scale (e.g. globally averaged temperature). Carbonator uses only 20-30 lines of computer code and takes a few seconds to simulate a few decades of climate system evolution on your computer.
Carbonator is based on the same laws of physics that underpin state-of-the-art climate models (in particular the conservation of energy) and for a limited number of variables will produce very similar results to those models. As such, it is a powerful tool that can be used to explore how the climate system is affected by different factors (like CO2 emissions, volcanoes of changes in the power output of the sun) how our decisions are likely to affect the climate system in the future.
You can get more information about Carbonator and download the model on its website: