Modeling Material Transport and Mixing in the Mid-latitude Ocean Circulation

海洋中的运输和混合将使用一系列模型进行研究。最初，准地转模型将用于产生“真正的”速度场。由此产生的湍流速度将用于在整个区域内传输拉格朗日粒子。结果将与使用马尔可夫模型序列（0、1、2和3阶）建模的离散度进行比较。这些允许扩散，弹道，亚和超扩散行为。这些研究也将用于理解模型的现象学行为。随机模型的结果将与海洋不同区域观测到的浮子特征进行比较。更现实的原始方程模型也将被研究。低频变率对流动结构、风强迫变率、涡致流动、三维流动和来源的影响将进行研究。另外两个令人感兴趣的问题是粗糙地形的影响和马尔可夫模型中非高斯强迫的影响。在欧拉偏微分方程中加入随机项，以模拟马尔可夫模型的作用，预计将在项目结束时进行。

Berloff0241131Transport and mixing in the ocean will be studied using a sequence of models. Initially, a quasi-geostrophic model will be used to produce 'true' velocity fields. The resultant turbulent velocities will be used to transport Lagrangian particles throughout the domain. The results will be compared to modeled dispersion using a sequence of Markov models (orders 0, 1, 2, and 3). These allow for diffusive, ballistic, sub and super diffusive behavior. These studies will also be used to understand the phenomenological behavior of the models. Results of the stochastic models will be compared with observed float characteristics from different regions of the ocean. More realistic, primitive equation models will also be investigated. Effects of low-frequency variability in flow structure, wind-forcing variability, eddy-induced flows, three-dimensional flows, and sources will be investigated. Two other questions of interest are the impact of rough topography and the impact of non-Gaussian forcing in the Markovian models. Incorporation of stochastic terms in the Eulerian partial differential equations, to simulate the role of the Markov models, is contemplated towards the end of the project.