This report discusses the climate conditions that we experience, which are the result of complex interactions between processes occurring in the atmosphere and in the oceans. These mentioned processes operate at global and local scales. They are influenced by other factors including: the land surface, polar ice sheets and the sun. Due to this, different parts of the world experience different climates. Several questions about Global Climate Models (GCMs) are posed throughout the paper in order to tease out the impact of it on research about climatic changes. What are global climate models? How do GCM’s work and do we know if GCMs are reliable? How do GCMs project future climate? What can GCMs tell us about the future climate? Evaluating outputs of GCMs. Why high resolution doesn’t necessarily give better climate projections.
