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< p >我想给高中学生解释为什么急流蜿蜒,我知道的方程描述相对涡度和行星涡,涡度守恒的概念即F +ζ=常数。< / p > < p >但我想解释它没有这些方程简而言之。谁能给一个通用条款的解释。没关系如果不是100%准确只是给出了一个基本概念的了解。< / p >

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< p >喷射流在我们地球旋转(球体)漫步,因为他们不能保持直纬向。大气流动实际上是摄动对碰撞到大型山脉和落基山脉和喜马拉雅山脉;产生影响,也觉得在急流级别(即。地面上,约10公里;对流层上部辐合)。近年由于不均匀温度场对比和latitude-dependent日晒导致的不均匀压力场产生任何方向的风和涡流。对流,云层和降水也会影响上层对流层流。< / p > < p >所有这些原因可以提供一个“kick"最初在一个带状的喷气机。这个“kick"意味着气团将走向不同的纬度南北保持原来位置的涡度(因为涡度守恒在某些假设)。气旋和反气旋旋转运动从而出现和飞机发展所谓罗斯比波。 These waves are highly-dynamic flow features with a shape and propagation that evolve constantly and give rise to the meandering of the jet that hosts them. Since some regions in the midlatitudes are baroclinically highly unstable (i.e., the meridional temperature gradient is large and small eddies can quickly grow bigger), these meanders are often rather pronounced and the meridional component of the wind dominates the zonal one.

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