Collaborative Research: Ocean Horizontal Array Turbulence Study: An Investigation of Subfilter-Scale Fluxes in the Marine Surface Layer

合作研究：海洋水平阵列湍流研究：海洋表层亚滤尺度通量的研究

• 批准号: 0519431
• 负责人: James Edson
• 金额: $ 11.41万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0519431&HistoricalAwards=false
• 关键词: Collaborative; Research; Ocean; Horizontal; Array

OHATS (Ocean Horizontal Array Turbulence Study ) is a novel field program to examine air-sea interaction and in particular the coupling of surface-layer turbulence in the marine (atmospheric) boundary layer with the underlying surface waves. These wind-generated waves influence the dynamics of the marine surface layer and the air-sea fluxes of momentum and scalars. The ability to model the marine surface layer reliably with large-eddy simulation (LES) is unknown. LES and in particular its sub-filter-scale (SFS) parameterization require validation against and guidance from observations for this complex flow. The critical piece of the project is a field campaign specifically directed at the measurement of SFS variables in the marine surface layer. These observations will be used to elucidate the impact of waves and atmospheric stability on surface-layer turbulence and provide a database to validate and improve SFS models for LES. OHATS will be carried out in the summer of 2004 at the recently constructed Air-Sea Interaction Tower (ASIT) located off the coast of Martha's Vineyard. The ASIT is connected directly to shore via the Martha's Vineyard Coastal Observatory (MVCO) operated by Woods Hole Oceanographic Institution. OHATS will employ 14 sonic anemometers in a two-level setup similar to the Horizontal Array TurbulenceStudy done in California in 2000. SFS velocity and temperature fluxes will be deduced by spatially filtering the measured 3-D velocity and temperature fields. Simultaneous observations of the wave-field properties will be made in order to establish correlations with the SFS variables. OHATS will enhance the current understanding of air-sea interaction processes, provide insight into the couplings between surface waves and turbulence, and shed new light on SFS modeling for LES A graduate student will work on the project along a postdoctoral student from the Advanced Study Program at NCAR.. The project will provide hands-on experience and training with a fundamental problem in air-sea interaction research, i.e., the coupling of wind and waves to graduate student and post-doc. The data will be made available to the broader community via the internet.

OHATS（海洋水平阵列湍流研究）是一个新的现场程序，可检查空气 - 海洋（大气）边界层中表面层湍流与下面的表面波的偶联。这些风生成的波影响海洋表面层的动力学以及动量和标量的空气通量。使用大涡模拟（LES）可靠地对海洋表面层建模的能力尚不清楚。 LE，尤其是其子滤波器尺度（SFS）参数化需要对这种复杂流量的观察结果进行验证和指导。该项目的关键部分是专门针对海洋表面层中SFS变量的现场活动。这些观察结果将用于阐明波和大气稳定性对表面层湍流的影响，并提供一个数据库来验证和改善LES的SFS模型。 OHAT将于2004年夏天在玛莎葡萄园海岸附近的最近建造的空气互动塔（ASIT）上进行。 ASIT通过伍兹霍尔海洋学机构操作的玛莎葡萄园沿海天文台（MVCO）直接连接到岸边。 OHAT将在与2000年在加利福尼亚州进行的水平阵列湍流相似的两级设置中采用14个声音动脉仪。SFS速度和温度通量将通过空间过滤测得的3-D速度和温度场来推导。为了建立与SFS变量的相关性，将对波场特性进行同时观察。 OHAT将增强对空气交互过程的当前理解，提供对表面波和湍流之间的耦合的见解，并为LES提供新的SFS建模灯，研究生将沿着高级研究计划的博士后学生从事该项目的工作。在NCAR ..该项目将提供实践经验和培训，并在空气互动研究中的基本问题，即风与波的耦合与研究生和大多数后的研究。数据将通过互联网提供给更广泛的社区。