Using a Mass Balance Model to Understand Carbon Dioxide and its Connection to Global Warming part of Quantitative Skills:Activity Collection
Students explore the increase in atmospheric carbon dioxide over the past 40 years with an interactive on-line model.

What is the fate of CO2 produced by fossil fuel combustion? part of Quantitative Skills:Activity Collection
A box model is used to simulate the build up of carbon dioxide in the atmosphere during the industrial era and predict the future increase in atmospheric CO2 levels during the next century.