Structure and Momentum Fluxes of Warm Pool Oceanic MesoscaleConvective Systems

本研究的重点是分析和解释 机载多普勒雷达和原位（即，飞行高度）数据 暖池中尺度对流系统（MCS）和 这些空间内的三维气流记录 系统. 过去的观测现场方案（例如GATE、PRE-STORM） 已经清楚地表明，MCS是一个基本的现象， 气氛 将特别强调以下疾病的诊断 垂直运动：活动积云区的对流尺度 层状雨区MCS和中尺度的变化。 的 垂直运动的精确量化对于 计算动量通量和加热的垂直廓线。 多普勒和现场数据分析的结果将 通过使用一系列数字来测试、补充和扩展 模拟从几个数值模型，包括克拉克 还有克伦普-威廉森 这些模型的成本将是 由飞机和探测数据的组合提供 意见。 这种方法结合了数据分析和数值计算， 建模，应导致更好地了解MCS结构， 气流、通量和生命周期，以及 MCS和环境。 这项建议还涉及适当的规划， 执行飞机飞行，以及数据验证和 实地调查结束后的数据管理活动 TOGA/COARE阶段。 其他实地项目的经验（例如， 风暴前飓风，TAMEX和EMEX）已经显示了真实的价值- 时间决策在选择适当的飞行轨迹， 充分利用机载多普勒雷达的能力。 因此，进行这项研究的科学家也将 作为空中首席科学家参加实地项目， 多普勒雷达操作员。 所有的飞机科学家都在研究 共同努力，通过一个 协调研究飞行计划。 这项研究很重要，因为它是一个 TOGA/COARE对负责以下过程的主要研究： 西太平洋暖池对流及其与太平洋环流的相互作用 更大的尺度是一个特别气候敏感的地区， 世界，西太平洋，TOGA/COARE的现场。

This research focuses on the analysis and interpretation of airborne Doppler radar and in-situ (i.e., flight level) data from warm pool mesoscale convective systems (MCS) and on the documentation of the three-dimensional airflow within these systems. Past observational field programs (e.g. GATE, PRE-STORM) have clearly shown that MCSs are a fundamental phenomenon in the atmosphere. Particular emphasis will be given to the diagnosis of vertical motions: convective-scale in the active cumulus regions of the MCS and mesoscale in the stratiform rain regions. The accurate quantification of vertical motions is important for the computation of fluxes of momentum and vertical profiles of heating. The results from analysis of both Dopple and in-situ data will be tested, supplemented and extended by using a series of numerical simulations from several numerical models including both the Clark and the Klemp-Wilhelmson. Initialization for these models will be provided by a combination of data from aircraft and sounding observations. This approach, combining data analysis and numerical modeling, should lead to a better understanding of MCS structure, airflow, fluxes, and life-cycle and of the interactions between the MCS and the environment. This proposal is also concerned with proper planning and execution of the aircraft flights, as well as data validation and data management activities following the completion of the field phase of TOGA/COARE. Experience in other field projects (e.g., PRE-STORM hurricanes, TAMEX, and EMEX) has shown the value of real- time decision making in the selection of proper flight tracks to fully utilize the capabilites of the airborne Doppler radar. Therefore, the scientists performing this research will also participate in the field program as airborne Chief Scientists and Doppler radar operators. All aircraft scientists are working together to meet their individual research objectives through a coordinated research flight plan. This research is important because it serves as one of the principal TOGA/COARE studies of the processes responsible for convection in the western Pacific warm pool and its interaction on larger scales is an especially climate sensitive region of the world, the western Pacific Ocean, the field site of TOGA/COARE.