Judith Curry,Ph.D. Geophysical Sciences. President (co-owner) of Climate Forecast Applications Network (CFAN). Previously, Professor and Chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology: There is considerable debate over the fidelity and utility of global climate models (GCMs). GCM outputs are used by economists, regulatory agencies and policymakers, so GCMs have received considerable scrutiny from a broader community of scientists, engineers, software experts, and philosophers of science. This report attempts to describe the debate surrounding GCMs to an educated but non-technical audience.
