Quantifying the Effects of Swell on the Air-Sea Momentum Flux

量化膨胀对海气动量通量的影响

• 批准号: 0220459
• 负责人: William Drennan
• 金额: $ 48.14万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0220459&HistoricalAwards=false
• 关键词: Quantifying; Effects; Swell; Air; Sea

Quantifying the Effects of Swell on the Air-Sea Momentum FluxW. DrennanRSMASField measurements of momentum fluxes and velocity profiles will be used to help derive a new parameterization of air-sea fluxes under multiple roughness scales. Near-surface turbulence will be measured from an air-sea interaction spar buoy (ASIS) at a marine site in the Baltic Sea. Directional wave measurements will be made from ASIS and two waverider buoys. Meteorological measurements will be made from a nearby tower. This site was chosen to provide a regime of swell aligned with the wind field, a wide-range of atmospheric stability and a low-moderate wind-regime. The data will be analyzed to derive a better relationship between surface roughness and momentum flux in swell dominated or mixed sea regions. Incorporation of the new results into state-of-the-are coupled models should lead to improved forecasts of hurricanes and tropical storms.

膨胀对海气动量通量影响的量化。DrennanRSMAS动量通量和速度剖面的实地测量将用于帮助推导出多粗糙度尺度下的海气通量的新参数化。 近表面湍流将在波罗的海的一个海洋站点的海气相互作用柱形浮标（ASIS）进行测量。 将通过ASIS和两个乘波浮标进行定向波测量。气象测量将在附近的一座塔上进行。 选择该地点是为了提供与风场一致的涌浪制度、大范围的大气稳定性和低-中等风制度。 将对数据进行分析，以便在涌浪为主或混合海区得出表面粗糙度和动量通量之间更好的关系。 将新的结果纳入现有的耦合模型，应能改进飓风和热带风暴的预报。