GFDLLOEQ

This experiment was performed in the USA 1986 using the Geophysical Fluid Dynamics Laboratory R15 9-layer atmospheric GCM, coupled to a mixed-layer ocean. The horizontal resolution of the model is approximately 4.5 deg latitude by 7.5 deg longitude. The results are from an equilibrium experiment reported in Wetherald and Manabe (1986). The experiment has been widely referred to as "GFDL" (although there is another GFDL equilibrium experiment performed in 1989 at high resolution which may also be referred to as GFDL, hence our terminology). The results from this experiment were acquired in 1990 from Roy Jenne at NCAR, Boulder. The change fields are calculated as the difference between 10 years of control (1xCO2) climate and 10 years of perturbed (2xCO2) climate. The model has a climate ensitivity of 4.0degC and a global precipitation sensitivity of 2.3% per degree Celsius warming.

Mean monthly precipitation pattern correlation coefficient = 0.58

References

Wetherald,R.T. and Manabe.S. (1986) An investigation of cloud cover change in response to thermal forcing Climatic Change, 8, 5-23.