Collaborative Research: ISPOL-1 Turbulent Heat Flux project

该合作项目(与海军研究生院)是作为德国南极计划极地冰站(ISPOL)项目的一部分，研究上层海洋中的热量、动量和盐度交换的项目，该项目计划于2004年11月至12月在威德尔海西部进行为期50天的漂流。两个仪表组将测量三维水流、温度和盐度结构，以表征周围海洋的湍流结构。这些数据将提供对上层海洋中涡动粘度和扩散系数剖面的定量估计，这对于真实模拟冰/上层海洋系统中的标量分布和通量，包括营养物质通量是必要的。在极地漂移遇到大陆架的情况下，设计用于深度超过500米的湍流测量系统可用于对底部边界层的有限研究。这将为实验增加一个有用的维度，通过在南极半岛东部大陆架外输送冷底水的密度流中直接测量通量。这项工作继续着与国际社会对南纬60度以南的南大洋感兴趣的科学家的合作，该合作始于1990年对威德尔冰站的规划。它为美国参与一项由德国主导的实验提供了一个机会，该实验具有很好的交叉培养概念和技术以了解高纬度气-海-冰相互作用的潜力。它包括对博士后研究人员的部分支持，以及为研究生论文工作提供建议的机会。

This collaborative project (with the Naval Postgraduate School) is a study of heat, momentum, and salinity exchange in the upper ocean as a component of the German Antarctic Program's Ice Station Polarstern (ISPOL) project, a planned fifty-day drift in the western Weddell Sea in November-December 2004. Two instrument clusters will measure the three-dimensional current, temperature, and salinity structure, to characterize the ambient oceanic turbulence structure. These data will provide the quantitative estimates of the eddy viscosity and diffusivity profiles in the upper ocean necessary for realistic modeling of scalar distributions and fluxes in the ice/upper ocean system, including fluxes of nutrients. In the event that the drift of Polarstern encounters the continental shelf, the turbulence measuring system, designed for depths in excess of 500 m, may be used for limited studies of the bottom boundary layer. This would add a useful dimension to the experiment, by making direct flux measurements in a density flow transporting cold bottom water off of the eastern Antarctic Peninsula shelf. The work continues a collaboration with scientists from the international community interested in the Southern Ocean south of 60 deg South that began with planning for Ice Station Weddell in 1990. It provides an opportunity for American participation in a German-led experiment with good potential for cross-fertilization of concepts and techniques for understanding high latitude air-sea-ice interaction. It includes partial support for a postdoctoral researcher and the opportunity to advise postgraduate thesis work.