Ocean mixing

湍流海洋混合控制着从经向温盐翻转单元(也称为全球传送带)到海洋气候时间尺度、向阳光充足的表层水域的营养物质供应以及人为和自然物质的扩散等各种过程。在分层海洋内部，湍流在很大程度上受到重力内波破裂的控制。在过去的十年里，人们已经确定内陆混合很弱，将注意力集中在海洋边界上。我的研究小组将继续收集和解释与混合、湍流和内波有关的观测数据，特别关注峡谷中地形产生的湍流。在海脊和大陆斜坡上寻找深水和浅水之间的路径。我们还将继续使用和测试依赖于内部波剪切和应变的湍流参数化。湍流混合必须在全球和区域数值模式中作为亚网格尺度过程进行参数化。可以将混合与更大尺度分辨的模型量相关的改进的参数化非常重要，因为它们将提高区域和气候模式的预报可靠性，从而提高我们预测地球气候和当地水域对自然和人为强迫的响应的能力。我们的长期目标是发展这种改进的参数化。

Turbulent ocean mixing controls processes ranging from the meridional thermohaline overturning cell (also known as the global conveyor belt) and so ocean climatological timescales,  nutrient supply to sunlit surface waters, and dispersion of anthropogenic and natural material.  In the stratified ocean interior, turbulence is largely controlled by breaking of internal gravity wave.  The past decade has established that mixing is weak in the interior, focussing attention on ocean boundaries.  My research group will continue to collect and interpret observations relating mixing, turbulence and internal waves with particular attention to topographically-generated turbulence in canyons, over ridges and on the continental slope seeking pathways between deep and shallow waters.  We will also continue to use and test turbulence parameterizations that rely on internal wave shear and strain.  Turbulent mixing must be parameterized as a subgridscale process in global and regional numerical models.  Improved parameterizations that can relate mixing to larger-scale resolved model quantities are important because they will improve the forecasting reliability in regional and climate models, thus improving our ability to predict the response of Earth's climate and local waters to natural and anthropogenic forcing.  Our longterm goal is the development of such improved parameterizations.