Global Boundary Layer Dynamics

全局边界层动力学

• 批准号: 8717255
• 负责人: John Young
• 金额: $ 42.31万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8717255&HistoricalAwards=false
• 关键词: Global; Boundary; Layer; Dynamics

This research project will conduct studies on the larger- scale dynamics of circulations within and coupled to frictional boundary layers. One primary emphasis will be on planetary zonal scales in the tropical half of the global atmosphere. Synoptic scales and oceanic motions will be secondary themes. The approaches will be theoretical, modeling, and observational. Strong connections to GARP and TOGA programs will be maintained. Theoretical studies will have two areas of concentration. One will be on dynamic structures of balanced flows, with implications for three-dimensional data analysis strategies. Another will be on unbalanced systems, such as cross-equatorial winds, boundary-layer spin-down circulations, forced waves, and the Tibetan Plateau effect. Observational studies will use the unique GARP data. Two results on turbulent monsoonal flow in MONEX will be completed. FGGE data will be used to determine the dynamics of cross equatorial flow and air-sea momentum interactions. Modeling work will be a means to develop a TOGA (Tropical Ocean-Global Atmosphere) climate program perspective in this grant. A three- level cumulus boundary layer model will be applied to understand latitudinal and time variations, and coupled experiments with an ocean mixed layer will be conducted. Improvements in the model will include higher resolution with more realistic effects of wind shear. This research is important to advances in understanding how the earth's planetary boundary layer influences weather and climate and in modeling and predicting weather and climate.

该研究项目将对较大的- 摩擦力和摩擦力耦合的环流尺度动力学 边界层 一个主要的重点将是行星纬向 地球大气中的热带部分。 天气 尺度和海洋运动将是次要主题。 的 方法将是理论，建模和观察。 将保持与GARP和TOGA计划的密切联系。 理论研究将有两个重点领域。 一个将是关于平衡流动的动态结构， 对三维数据分析策略的影响。 另一个将是不平衡的系统，如跨赤道 风、边界层旋转下降环流、强迫波和 青藏高原效应。 观察性研究将使用独特的GARP数据。 两 将完成MONEX中湍流季风流的结果。 FGGE数据将用于确定杂交的动态 赤道气流和海气动量相互作用。 建模工作 将是一种手段，以制定一个热带海洋-全球 大气）气候计划的角度来看，在这个赠款。 一个三- 水平积云边界层模式将用于了解 纬度和时间的变化，并与一个 海洋混合层将进行。 模型的改进 将包括更高的分辨率，更逼真的效果， 风切变 这项研究对于了解如何 地球的行星边界层影响天气， 气候以及建模和预测天气和气候。