(In Global Climate Models, we trust?) An Introduction to Trusting Global Climate Models and Bias Correction

Many tools, such as observing instruments and models, help climate scientists understand Earth’s changing climate. Global climate models (GCMs) provide guidance for the future. Credibility is defined as having the attribute of scientific adequacy, and is necessary for determining the usability of GCM information. The credibility of GCMs is based, in part, on the ability of the GCM to represent past weather and climate. This evaluation with the past reveals strengths and weaknesses and contributes to the uncertainty description.