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大气科学  2000 

大气环流的年代际变化 II.GCM数值模拟研究

DOI: 10.3878/j.issn.1006-9895.2000.06.02

Keywords: 大气环流,年代际变化,大气环流模式,数值模拟

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Abstract:

类似大气环流模式比较计划(AMIP)的数值模拟,将实际观测的海表水温(SST)资料引入模式进行40多年的数值积分,得到长时间的大气环流模拟结果。分析数值模拟结果发现,无论是大气中的主要涛动和遥相关型,还是重要大气环流系统都极为清楚地存在着年代际变化特征,包括10~20年准周期振荡和可能的30年以上的准周期振荡;而且上述主要环流系统的形势及其年代际变化大都与实际观测资料所给出的结果相一致。顺便分析中国东部气候的模拟结果,年代际变化特征(包括60年代的气候突变)也很清楚,并同大气环流变化配合十分合理。结果也表明,同研究季节和年际变化一样,大气环流模式(AGCM)数值模拟也是研究大气环流和气候年代际变化的有效方法。

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