UIUC-EQ

A set of experiments were performed during 1996/97 using the University of Illnois at Urbana-Champaign (UIUC) atmospheric GCM (Schlesinger, 1997). This model has 11 atmospheric levels and was attached to a slab ocean model. Ocean heat flux convergence is prescribed. The model has a surface resolution of 4deg latitude by 5deg longitude. The climate sensitvity of the GCM is 3.38degC. The following experiments were performed:

The purpose of these latter simulations was to determine aerosol-induced patterns of climate change, region-by-region (see Schlesinger et al., 2000). After standardising these patterns by the respective global-mean temperature changes, the SCENGEN scaling method could be applied to recombine these regional patterns in any combination and with different regional weightings reflecting different aerosol loadings and hence SO2 emissions scenarios. The 10xSO4 loading was used to generate as large an aerosol signal as possible.

The mean monthly pattern correlation of the control-run global precipitation fields was 0.65.

References

Schlesinger,M.E. (1997) Geographical scenarios of greenhouse-gas and anthropogenic-sulfate-aerosol induced climate changes Report for EMF-14, University of Illinois, Urbana, USA, 85pp.

Schlesinger,M.E., Malyshev,S., Rozanov,E.V., Yang,F. and Andronova,N.G. (2000) Geographical distributions of temperature change for the SRES scenarios of greenhouse gas and sulfur dioxide emissions Technological Forecasting and Social Change (in press)