The images are from the British Meteorological Centre (greenhouse gas + sulphate aerosol) simulation and show decadal mean surface temperature changes (in degrees centigrade) for the period running from 1900 to 2100 with respect to the period 1880 to 1920. They show no global warming during the early part of the century and projected global warming into the future. Blue colours indicate areas that are cooler than normal and red show areas that are warmer than normal. The simulation uses historic rise of greenhouse gas (CO2) forcing, +1% increase per year from 1990, with sulphate aerosol forcing included.