论文标题
Stokes漂移不应添加到海洋一般循环模型速度中
Stokes drift should not be added to ocean general circulation model velocities
论文作者
论文摘要
海面运输的研究通常调用“欧文均值假设”：波浪敏捷的一般循环模型忽略了明确的表面波效应效应效果模拟了表面波振荡的欧拉尔米亚摩恩海洋速度时间平均水平。接受Eulerian均值假设的接受可以激发通过将Stokes漂移添加到模型输出中来重建总的Lagrangian均值表面速度。在这里，我们表明尤拉利亚均值的假设是不一致的，因为如果斯托克斯漂移与欧拉（Eulerian）或拉格朗日（Lagrangian） - 均值速度相比，波浪形模型无法准确模拟欧拉（Eulerian）均值的速度。我们得出的结论是，不应将Stokes漂移添加到海洋一般循环模型速度中。我们还使用理论参数显示了替代性“拉格朗日均值假设”的生存能力，并通过将波浪敏锐的全局海洋模拟与明确的波浪平均模拟进行比较。我们发现，即使Stokes漂移很重要，我们的波浪模型也可以准确模拟Lagrangian均值的速度。
Studies of ocean surface transport often invoke the "Eulerian-mean hypothesis": that wave-agnostic general circulation models neglecting explicit surface waves effects simulate the Eulerian-mean ocean velocity time-averaged over surface wave oscillations. Acceptance of the Eulerian-mean hypothesis motivates reconstructing the total, Lagrangian-mean surface velocity by adding Stokes drift to model output. Here, we show that the Eulerian-mean hypothesis is inconsistent, because wave-agnostic models cannot accurately simulate the Eulerian-mean velocity if Stokes drift is significant compared to the Eulerian-mean or Lagrangian-mean velocity. We conclude that Stokes drift should not be added to ocean general circulation model velocities. We additionally show the viability of the alternative "Lagrangian-mean hypothesis" using a theoretical argument and by comparing a wave-agnostic global ocean simulation with an explicitly wave-averaged simulation. We find that our wave-agnostic model accurately simulates the Lagrangian-mean velocity even though the Stokes drift is significant.
