The Stokes Drift due to Vertically Propagating Internal Gravity Waves in a Compressible Atmosphere
The Stokes Drift due to Vertically Propagating Internal Gravity Waves in a Compressible Atmosphere
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可压缩大气中垂直传播的内部重力波导致斯托克斯漂移
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
J. Weinstock
中科院分区：
文献类型：
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作者：
L. Coy;D. Fritts;J. Weinstock
摘要垂直传播的可压缩重力内波具有垂直斯托克斯漂移，它与垂直波能通量成正比。在大气中由向上传播的波主导的区域，如夏季中间层，这种斯托克斯漂移将是向上的。对于拉格朗日平均包裹运动是小的，向下的平均欧拉速度必须存在，以在很大程度上反对向上斯托克斯漂移。这些.结果可以解释在夏季中间层在阿拉斯加扑克平原观测到的向下平均欧拉速度。
Abstract Vertically propagating, compressible, internal gravity waves are shown to have a vertical Stokes drift which is proportional to the vertical wave energy flux. In regions of the atmosphere dominated by upward propagating waves, such as the summer mesosphere, this Stokes drift will be upward. For the Lagrangian mean parcel motion to be small, a downward mean Eulerian velocity must exist to largely oppose the upward Stokes drift. These. results may explain the downward mean Eulerian velocity observed at Poker Flat, Alaska in the summer mesosphere.