Effects of Tropical Mesoscale Convective Systems on the Boundary Layer and the Larger Scale

9706098 Lewis toga-COARE(热带海洋-全球大气-海洋-大气耦合响应实验)是在热带西太平洋暖池区进行的一项观测外业项目。在20世纪90年代初，一些观察跨越了几年。大多数是从1993年冬季4个月的密集观测中得出的。这是一个海洋/大气联合项目，其重点目标是收集与世界区域内海洋和大气相互作用和物理过程有关的观测资料。TOGA-COARE的目标之一是确定在西太平洋暖池区组织对流的主要大气过程。为了实现这一目标，首席研究员将得出不同类型的海洋中尺度对流系统(MCSs)的垂直运动、动量输送和热量收支。她将把这些物理量与中尺度对流系统(MCS)的不同特征联系起来，包括对流、演变和边界层修正的模式。这项研究将集中于联合使用来自多架飞机的现场和多普勒雷达测量，包括使用一种相对较新的多普勒合成技术--四多普勒。选择了四个不同的案例(2月6日、2月9日、2月20日、2月22日)进行比较。这四个系统中的每一个都代表了不同类型的MCS组织结构。由于四度多普勒技术，风的特殊质量将是计算热通量的一项资产。将研究不同类型的MCS对更大规模结构的影响。***

9706098 Lewis TOGA-COARE (for Tropical Ocean-Global Atmosphere Coupled Ocean- Atmosphere Response Experiment) was a observational field project conducted in the warm pool area of the western tropical Pacific Ocean. Some of the observations span several years in the early 1990s. Most are derived from an intensive observing period of 4 months in winter, 1993. It was a joint ocean/atmosphere project with the focused goal of collecting the observations relevant to air-sea interactions and the physical processes that couple the ocean and atmosphere in the region of the world. One of the objectives of the TOGA-COARE is to determine the principal atmospheric processes that organize convection in the Western Pacific warm pool region. To accomplish this objective, the Principal Investigator will derive vertical motions, momentum transports, and heat budgets for different types of oceanic mesoscale convective systems (MCSs). She will relate these physical quantities to different characteristics of mesoscale convective systems (MCS) including the modes of convection, evolution and boundary layer modification. The research will focus on the combined use of in situ and Doppler radar measurements from multiple aircraft including the use of a relatively new Doppler synthesis technique, quad- Doppler. Four distinct cases (Feb. 6, Feb. 9, Feb. 20, Feb. 22) have been chosen for comparison. Each of the four systems represent different types of MCS organizational structure. The exceptional quality of the winds, due to the quad- Doppler technique, will be an asset for calculating the heat flux. The impact of the different types of MCSs on the larger scale structure will be examined. ***