1. 1 Zhou Tianjun and Rucong Yu, 2006, Twentieth Century Surface Air Temperature over China and the Globe Simulated by Coupled Climate Models, Journal of Climate, 19(22), 5843-5858.

2. 2 Figure 1. Observed variations from 1880-1999 of the annual mean China-wide (solid line), global (long dashed line) and Northern Hemispheric (short dashed line) average surface air temperature anomalies in units of ℃.

3. 3 Figure 2. The (a) global, (b) Northern Hemispheric and (c) Chinese average surface air temperature anomalies simulated by the 20C3M models. Each thin color line corresponds to “run1” of each model.

4. 4 Figure 3. Same as Fig. 2 except for the ensemble mean of CNRM-CM3, GFDL-CM2.1, GISS_AOM, MRI-CGCM2.3.2 models (long-dashed line), and the single GFDL-CM2.1 model (short-dashed line). The observation is shown as a solid line.

5. 5 Figure 7. The distribution of the linear trend of annual mean SAT for 1951-1999 in a single realization of the 20CM3 simulation by different models and the observation (Units: ℃ /50yr). Negative trends are shaded.

6. 6 Figure 8. Zonal mean of the (a) JJA and (b) DJF SAT linear trends (1951-1999) over East China (102.5º- 122.5ºE) for “run1” of the different models. The observation is shown as thick black line (Units: ℃ /50 yr).