Collaborative Research: Rotationally Constrained Convection

本提案的主要目的是更好地理解深海开放海洋对流活跃期的混合，并获得对流期间发生的温度和盐度变化的参数化。它在物理上的新颖之处在于，它包括了对以前没有详细研究过的物理过程的研究，包括：(a)羽流之间的垂直相互作用和(b)倾斜对流。这项研究将使用雄心勃勃的数值模拟来检验对流羽流湍流集合的动力学，并将包括地球旋转矢量的水平分量的影响。模拟将使用完整的Boussinesq方程以及由pi开发的不那么僵硬的渐近简化的动力学方程集。该项目将开发的关于上层海洋强对流事件的横向搅拌和穿透的信息将用于改进用于研究全球海洋环流和气候的那种大尺度海洋模式中开放海洋对流的参数化。

0137347/JulienThe main aims of this proposal are to develop a better understanding of mixing during the active phase of deep open-ocean convection and to obtain parameterizations of temperature and salinity changes occurring during convection. Its physical novelty is that it includes the study of physical processes not previously examined in detail, including: (a) vortical interactions between plumes and (b) slant-wise convection. The study will use ambitious numerical simulations to examine the dynamics of turbulent ensembles of convective plumes and will include the effect of the horizontal component of the Earth's rotation vector. Simulations will use both the full Boussinesq equations as well as less stiff, asymptotically reduced sets of dynamical equations developed by the PIs. The information on the lateral stirring and penetration of strong convective events in the upper ocean that will be developed in this project will be used to improve parameterizations of open-ocean convection in large-scale ocean models of the sort used to study global ocean circulation and climate.