Model Behavior: Visualizing Global Carbon Dioxide | NASA Goddard FriendsofNASA.org: This global map of carbon dioxide was created using a model called GEOS, short for the Goddard Earth Observing System. GEOS is a high-resolution weather reanalysis model, powered by supercomputers, that is used to represent what was happening in the atmosphere—including storm systems, cloud formations, and other natural events. This model pulls in billions of data points from ground observations and satellite ins