Hj. Wang et al., THE NUMERICAL-SIMULATION OF THE CLIMATIC-CHANGE CAUSED BY CO2 DOUBLING, Science in China. Series B, Chemistry, life sciences & earth sciences, 36(4), 1993, pp. 451-462
The IAP two-level atmospheric general circulation model was coupled to
a 60-m-deep mixed layer ocean model and a zero-layer thermodynamic mo
del to simulate the climatic effects induced by a doubling of CO2 conc
entration in the atmosphere. The global surface temperature is 1.75-de
grees-C when CO2 is doubled. This value is lower than most of other re
sults in the world, such as those of GFDL, NCAR, UKMO, GISS and OSU mo
dels. There are large regional and seasonal differences in the climati
c change. Great warming is found in the Northern Hemisphere's high-lat
itude region and the Antarctica; and the warming in land areas is grea
ter than in ocean areas, while the precipitation increases in high lat
itudes and tropical regions but decreases in subtropical regions. In b
oth hemispheres, the warming is greater in winter than in other season
s. As for the changes in China, we find that the precipitation in sout
hwestern and northern China greatly decreases in summer but increases
in winter.