Climate change - Atmosphere, Weather and Climate - page 404

Figure 13.20 Seasonal differences of surface-air tem-
perature for a transient experiment with a 1 per cent
compound increase in CO 2 compared with a control
experiment with the NCAR Climate System Model. (A)
December to February. (B) June to August for years 60 to
79; CO 2 doubling is reached about year 70. Isotherm
interval is 0.5°C; areas greater than 2°C are shaded.
Source : From Meehl et al . (2000, p. 1882, fig. 1 (b), (c)).
Courtesy of the American Meteorological Society.
A
B
Figure 13.21 Predicted pattern of increases in annual surface temperature (°C) produced by an atmosphere-ocean coupled model
for the period from the present to the year 2100, based on the forcing assumptions of a doubling of CO 2 plus increases in anthropogenic
aerosols.
Source : Houghton et al . (1996). Reproduced by permission of the IPCC and Cambridge University Press.