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大气科学  2006 

球面正压大气的不稳定与南亚夏季风爆发动力机制的探讨

DOI: 10.3878/j.issn.1006-9895.2006.02.02

Keywords: 南亚夏季风,正压不稳定,积云对流

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Abstract:

通过球坐标正压原始方程谱点的计算,发现南亚夏季风爆发前有正压不稳定发生,不稳定罗斯贝波其最大增幅位于南半球的西风急流处,可向低纬传播并能在低纬激发出旺盛的积云对流,该积云对流可造成已失稳的大气基本场发生重大调整,从而导致南亚夏季风的爆发.

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