| 4 | A physical model for the global mean surface air temperature anomalies over the past century显示文摘OBSERVATIONS show that the global mean surface air temperature has risen by about 0.62℃over the past century.This rise is widely thought to be the result of increasing atmosphericconcentrations of greenhouse gases such as carbon dioxide,methane,nitrous oxide and chlo- | Shi, GY Guo, JD Fan, XB Wang, LX | 1997 | Chinese Science Bulletin1997，42，8： | 1 |
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