SGER: Measurements of particle emissions from The World Trade Center site in New York City

SGER：纽约世贸中心的颗粒排放测量

• 批准号: 0211625
• 负责人: Joseph Katz
• 金额: $ 9.99万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-15 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0211625&HistoricalAwards=false
• 关键词: SGER; Measurements; particle; emissions; World

0211625 Parlange The purpose of the research is to address questions on the particle transport from the World Trade Center (WTC) Site through the deployment of state-of-the-art instrumentation to measure the emission and resuspension of particles into the atmosphere It is planned to conduct the study over a ten-day intensive field observation period at the WTC site and the surrounding region of the greater New York City area to measure the flux of particles from the site and the vertical and horizontal extent of the aerosol plume. At the site, a combination of turbulence sensors, including Particle Image Velocimetry (PIV), Holographic PIV and sonic anemometers mounted on a telescopic profiling tower to continually measure the shear stress and the concentration and flux profiles of p[articles from the surface up to 10 m. above the site.A scanning elastic lidar system will be deployed to measure at high resolution (1.5 m.) the relative concentration of particles in the lower atmosphere (range up to 7 km.). The lidar will be deployed both near the site and at sites to be identified in the greater NYC area.The lidar system will be calibrated using the concentration measurements obtained from the PIV systems.An analysis of the field data collected will be conducted to identify relationships between weather conditions (e.g., wind shear stress, sensible heat flux) and the magnitude of the surface flux of particles and the extent of the transport into the atmosphere. ***

0211625 Parlange研究的目的是通过部署最先进的仪器来测量颗粒物排放和再悬浮到大气中，以解决世界贸易中心（WTC）场地的颗粒物传输问题。在世贸中心现场和大纽约市周边地区进行为期一天的密集实地观察，以测量来自现场的颗粒通量以及气溶胶羽流的垂直和水平范围。在现场，湍流传感器的组合，包括粒子图像测速仪（PIV），全息PIV和安装在伸缩剖面塔上的声波风速计，以连续测量表面高达10米的剪切应力和颗粒的浓度和通量分布。将部署一个扫描弹性激光雷达系统，以高分辨率（1.5米）进行测量。低层大气中粒子的相对浓度（范围达7公里）。 激光雷达将部署在现场附近和大纽约地区待确定的现场。激光雷达系统将使用PIV系统获得的浓度测量值进行校准。将对收集的现场数据进行分析，以确定天气条件之间的关系（例如，风切变应力、感热通量）和颗粒物表面通量的大小以及输送到大气中的程度。***