Numerical Study of Tropical Cyclones

热带气旋的数值研究

• 批准号: 8817763
• 负责人: Sethu Raman
• 金额: $ 3.15万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-01 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817763&HistoricalAwards=false
• 关键词: Numerical; Study; Tropical; Cyclones

Understanding the behavior of tropical cyclones in order to better predict their intensities and path is the ultimate goal of this research. One way to gain insight is to use numerical models to examine various aspects of the circulation. Two topics will be pursued under this award. The first is a study of the role of latent heat release from cumulus convection in cyclone development and how the effects can best be represented in numerical models. An important part of the investigation will be to compare simulations using two different cumulus parameterization schemes. The second area involves a study of the role of the beta-effect, or latitudinal variation of the Coriolis acceleration, on the motion of tropical storms. The study will be done with a spectral model which was developed under a previous NSF grant. The research to be conducted under this award will be for the completion of a graduate student thesis.

了解热带气旋的行为，以便更好地预测其强度和路径是本研究的最终目标。获得洞察力的一种方法是使用数值模型来检查环流的各个方面。这一奖项将涉及两个主题。首先是研究积云对流释放的潜热在气旋发展中的作用，以及如何用数值模式最好地表示这种影响。研究的一个重要部分将是比较使用两种不同的积云参数化方案的模拟。第二个领域涉及研究贝塔效应，或科里奥利加速度的纬向变化，对热带风暴运动的作用。这项研究将使用一个光谱模型，该模型是在之前的NSF拨款下开发的。根据这一奖项进行的研究将用于完成研究生论文。