A NON-FLUX CORRECTED TRANSIENT CO2 EXPERIMENT USING THE BMRC COUPLED ATMOSPHERE OCEAN GCM

A transient CO2 experiment has been performed with the BMRC coupled at mosphere ocean General Circulation Model (GCM). No flux corrections we re used in the experiment. A roughly linear temporal increase in globa l surface temperature is found in response to the CO2 increase. The ra te of increase is consistent with the (relatively low) equilibrium res ponse found previously using the Atmospheric GCM and a simple ocean. O cean surface temperatures increase more at mid latitudes than at high northern or southern latitudes where heat is sequestered into the deep ocean. Despite the secular climate drift which occurs in the model, t he major patterns of atmospheric and oceanic temperature change are si milar to changes noted elsewhere (from flux corrected models). This ad ds further support to the main conclusions drawn from transient CO2 ex periments performed elsewhere with coupled GCMs.