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本文指出在没有非季节性外强迫的25年模拟结果中,同样可以找到和外强迫异常引起的类似型类的气候异常变化,这表明季节性外强迫和非季节性外强迫引起的大气动力过程,都可以形成短期气候的异常变化,并使用两层IAP大气环流模式,对两组不同初态和不同自然气候变化子序列在同样热带海温异常条件下进行了数值试验,研究表明,模式大气中的气候异常现象是大气长期气候自然变化过程中固有的大气内部动力过程和外强迫异常所引起的动力过程的相互作用的结果;在北半球冬季,500hPa距平型的分布特征和非季节外强迫引起的动力过程所产生的异常特征比较一致,而南半球夏季,500hPa距平特征和季节性外强迫引起的动力过程所产生的距平特征比较一致。  相似文献   
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In this paper, it has been pointed out that anomalous climate change can be found, which is similar to that caused by anomalous external forcing, in the 25-year simulations from the model without non-seasonal external forcings. It shows that the short-term anomalous climate change can be formed by dynamic processes in the atmosphere caused by seasonal and non-seasonal external forcings.In this research, two numerical experiments with different initial states and different time sub-series of the natural climate change have been done using the IAP atmospheric general circulation model with same sea surface temperature anomalies in the tropical Pacific. The results reveal that anomalous climate phenomena in the atmosphere can arise as a result of interaction between the inherent internal dynamic process (caused by seasonal external forcings) in the long-range climate natural change process of the atmosphere and the dynamic process caused by non-seasonal external forcings (external dynamic process); in the  相似文献   
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