Numerical Investigation of the Effect of Temporal Variability on Mixing and Entraiment in Marginal Sea Overflows

溢流中的混合和水团改变在海洋温盐环流的强度中起着重要作用，因此它们在气候中具有潜在的重要性。然而，这些过程是次网格尺度在大多数海洋环流模式，所以必须参数化。大多数参数化方案都是基于定常流的动力学，但事实上，海洋羽流受到从潮汐到天气到季节的各种尺度的强迫。这个项目的目标是提高我们的理解的效果随时间变化的混合在溢流羽流使用的数据从三个红海巡航和进行过程研究，在理想和现实的二维和三维非流体静力学模型。这些结果将改进海洋环流和气候模型中表示溢出所需的参数化。该项目将成为一名女学生博士论文的基础。

Mixing and water mass modification in overflows play a strong role in the strength of the oceanic thermohaline circulation and hence they are potentially important in climate. However, these processes are sub-grid scale in most ocean circulation models and so must be parameterized. Most parameterization schemes are based on the dynamics of steady currents but oceanic plumes are in fact subject to forcing at a variety of scales from tidal to synoptic to seasonal. The goal of this project is to improve our understanding of the effects of time-dependent mixing in overflow plumes using data from three Red Sea cruises and by conducting process studies in idealistic and realistic 2D and 3D nonhydrostatic models. The results will improve parameterizations which are needed to represent overflows in models of the ocean general circulation and climate. This project will form the basis of the PhD thesis for a female student.