地表温度对太阳常数变化响应的数值试验研究

通过改变太阳常数，利用NCAR气候系统模式CSM1．4就地表温度对强外辐射强迫变化的响应及性质进行了研究。结果表明：虽然局地的增温幅度变化很大，但各试验的全球增温分布特征非常相似，并从一定程度上反映了全球增暖典型试验中的增温分布特点，即陆地比海洋增暖幅度更强，高纬度地区比低纬度地区增暖幅度更强，这一特点在太阳常数增加较大的试验中表现尤为明显。气候系统响应的性质在太阳常数分别增加2，5％、10％和15％与增加25％之间其响应方式有所改变，即气候系统对较小太阳常数变化的响应是线性的，而对较大太阳常数变化的响应则很可能是非线性的。

A Modeling Study on the Response of Surface Temperature to Changes in Solar Constant

The National Centre for Atmospheric Research(NCAR) coupled climate model of version 1.4(CSM1.4) is integrated to investigate the response of Earth's surface temperature to a range of external climate forcings.Evidence suggests that although the magnitude of local warming seems to show large differences,the overall pattern of temperature response is seen to be similar in the four cases with larger warming over the land(high latitudes) than the ocean(low latitudes),which is particularly pronounced for higher forcing cases and exhibits to some extent the features seen in many other global warming experiments.Also shown in the study is that the nature of the climate response has changed in some manner between solar constant increases of 2.5,10,and 15% and those of(25%),namely the temperature response is linearly related to the smaller forcings but nonlinearly to the larger ones.