【摘要】 本文通过正压涡度方程和浅水波方程两种全球模式的数值试验,说明了绝对涡度小值区在罗斯贝波活动中所起的“屏障”作用以及它在阻塞维持中的意义;从而解释了罗斯贝波在某些绝对涡度小而均匀的区域难以维持和传布的原因。更多还原

【Abstract】 The results of integatious of both barotropic vorticity equation and shallow water equation on sphere have shown the role that regions with small absolute vorticity gradient play in Rossby wave activities. And its effects on the propagation of Rossby waves might be effected by ambient flows which locally may be unable to sustain oscillations due to small vorticity gradient.更多还原