Vertical Transition in Transport and Mixing in Baroclinic Flows
Vertical Transition in Transport and Mixing in Baroclinic Flows
复制标题
斜压流中输运和混合的垂直转变
DOI：
10.1175/2007jas2236.1
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发表时间：
2008
影响因子：
3.1
通讯作者：
P. Haynes
中科院分区：
文献类型：
--
作者：
M. Greenslade;P. Haynes
本文讨论了β-平面通道模型中多层斜压湍流的数值模拟，重点讨论了输运和混合行为。模型中的温度场弛豫到与具有垂直切变的宽纬向射流一致的场，这是跨通道坐标的高斯函数。由此产生的统计平衡流包括一个活跃的斜压涡旋场。通过考虑势涡场和被动示踪剂(由此计算有效扩散系数/当量长度)，分析了输运和混合特性。流动的上部以这样的方式组织起来，在通道的中心有一个传输障碍，在两侧都有涡流混合区。在流动的下部，涡旋混合发生在一个单一的宽阔区域，没有中心输运障碍。这两个政权之间的过渡突然发生在一个高度zT。大量的模拟被用来绘制出变量。
Abstract Numerical simulations in multilevel baroclinic turbulence in a β-plane channel model are discussed, focusing on the transport and mixing behavior. The temperature field in the model is relaxed toward a field consistent with a broad zonal jet with vertical shear that is a Gaussian function of the cross-channel coordinate. The resulting statistical equilibrium flow includes an active baroclinic eddy field. The transport and mixing properties are analyzed by considering the fields of potential vorticity and a passive tracer (from which effective diffusivities/equivalent lengths are calculated). The upper part of the flow organizes itself in such a way that there is a transport barrier in the center of the channel, with eddy mixing regions on either side. In the lower part of the flow the eddy mixing occurs across a single broad region, with no central transport barrier. The transition between these two regimes takes place abruptly at a height zT. A large set of simulations is used to map out the var...
运动学和动态一致流中的传输和混合
影响因子：
3.1
作者：
Shuckburgh E
通讯作者：
Shuckburgh E