PECAN: Ground Based Lidar and Micro Wave Radiometer and Radiosonde Profiling of the Thermodynamic and Dynamic Structure of the Nocturnal Boundary

PECAN：夜间边界热力学和动态结构的地基激光雷达、微波辐射计和无线电探空仪剖面图

• 批准号: 1503563
• 负责人: Belay Demoz
• 金额: $ 30.96万
• 依托单位: University of Maryland Baltimore County
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-02-01 至 2019-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1503563&HistoricalAwards=false
• 关键词: PECAN; Ground; Based; Lidar; Micro

This award is for participation in the Plains Elevated Convection at Night (PECAN) field campaign. PECAN will take place in the central United States in the summer of 2015. The focus of the overall project is on overnight thunderstorm complexes that regularly occur in the Great Plains area. A variety of observational systems will be put in place for the field experiment including multiple aircraft, mobile radars, and ground-based systems that can profile the wind and particles in the lower atmosphere. This individual project will provide funding for researchers to provide instrumentation at one of the campaign ground sites. The researchers will focus on measurements that describe the environment prior to the initiation of the thunderstorms. This project will help to increase understanding of these convective systems in order to better predict and warn the public of hazardous weather. The project will also help train the future generation of scientists by involving a student in the research. The steering committee for the PECAN campaign has identified four main research topics to be addressed: 1) Nocturnal convection initiation and early evolution of mesoscale convective clusters; 2) Bore and other wave-like disturbances; 3) Dynamics and microphysics of nocturnal mesoscale convective systems; 4) Prediction of nocturnal convection initiation and evolution. This objective of this project is to provide a quantitative assessment of the evolution of the nighttime boundary layer and entire troposphere with particular attention to its potential for elevated convection. The researchers will coordinate and manage the deployment and data acquisition of highly resolved water vapor mixing ratio, temperature, aerosol structure and wind profiles at one of the Fixed PECAN Integrated Sounding Array (PISA) sites. The specific instrumentation includes a wind lidar, sounding system, ceilometer, and Raman lidar.

该奖项是对参与平原夜间高空对流(山核桃)实地活动的奖励。山核桃将于2015年夏天在美国中部举行。整个项目的重点是大平原地区经常出现的夜间雷暴综合体。现场实验将安装各种观测系统，包括多架飞机、移动雷达和地面系统，这些系统可以描绘低层大气中的风和粒子的轮廓。这个单独的项目将为研究人员提供资金，以便在其中一个竞选场地提供仪器。研究人员将专注于描述雷暴开始前的环境的测量。该项目将有助于增加对这些对流系统的了解，以便更好地预测和警告公众危险天气。该项目还将通过让一名学生参与研究来帮助培养未来一代科学家。山核桃运动指导委员会确定了四个主要研究主题：1)中尺度对流团的夜间对流启动和早期演化；2)涌浪和其他波状扰动；3)夜间中尺度对流系统的动力学和微物理；4)夜间对流启动和演化的预测。该项目的目标是对夜间边界层和整个对流层的演变情况进行定量评估，并特别注意其对流上升的可能性。研究人员将协调和管理在一个固定的山核桃综合探空阵(PISA)站点部署和获取高分辨率水蒸气混合比、温度、气溶胶结构和风廓线的数据。具体的仪器包括测风激光雷达、探测系统、Ceileter和拉曼激光雷达。