Mesoscale Air-Sea Coupling in Tropical Cyclones

这项研究的目的是提高对海气相互作用在改变热带气旋近地面风结构中的作用的认识。特别重要的是，当热带气旋经过环绕美国东海岸和墨西哥湾各州的温暖海洋特征时，了解这些相互作用的作用。具体的研究目标是：1。开发技术以改进根据现场和雷达测高数据估算上层海洋热含量的方法。2 .研究暖海洋特征对大气边界层（ABL）表面应力、通量和波的强迫作用以及海洋混合层（OML）反馈给大气边界层的作用。量化温度和盐度混合和水平平流的作用，包括OML的质量、热量和盐收支以及降水对OML的影响。这项研究的成功完成将有助于更好地理解暖海洋上层特征对地面风变化的作用。这可能导致边界层参数化的改进和飓风强度预报的改进。

The goal of this research effort is to improve understanding of the role of air-sea interactions in modifying the near-surface wind structure of tropical cyclones. Of particular importance is to understand the role of these interactions as tropical cyclones pass over warm oceanic features that surround the United States Eastern Seaboard and the Gulf of Mexico states. Specific research objectives are: 1. Develop techniques to improve estimates of upper ocean heat content from in situ and radar altimetry data.2. Examine the forcing of warm ocean features on surface stresses, fluxes and waves in the atmospheric boundary layer (ABL) and the role of the ocean mixed layer (OML) feedback to the ABL.3. Quantify the roles of mixing and horizontal advection of temperature and salinity, including the mass, heat and salt budgets in the OML and the effects of precipitation on the OML.Successful completion of this research will lead to a better understanding of the role of warm upper oceanic features on surface wind variations. This may lead to improved boundary layer parameterizations and improved hurricane intensity forecasts.