Elastic Lidar Measurements in Megacity Impacts on Regional and Global Environments-Mexico City Pollution Outflow Field Campaign (MIRAGE-Mex)

特大城市的弹性激光雷达测量对区域和全球环境的影响 - 墨西哥城污染外流现场活动 (MIRAGE-Mex)

• 批准号: 0510461
• 负责人: William Eichinger
• 金额: $ 32.06万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-10-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0510461&HistoricalAwards=false
• 关键词: Elastic; Lidar; Measurements; Megacity; Impacts

This award supports the deployment of a mobile elastic lidar system for measurements of the radiative properties of aerosols at various distances from Mexico City during the Megacity Impacts on Regional and Global Environments - Mexico City experiment (MIRAGE-Mex). The goal of MIRAGE is to study the chemical and physical transformations of gaseous and aerosol pollutants in the outflow from Mexico City, currently the world's second largest metropolitan area. This project involves the fielding of an elastic lidar system and supporting equipment. The use of a mobile lidar will allow the characterization of the location, concentration, extent and persistence of the Mexico City plume as it transports into the surrounding regions. The mobility of the system will allow connections to be made between aerosols in one area and their sources upwind. These measurements will help to address issues relating to changes in aerosol size, shape and composition with time. The lidars will provide information on the height, backscatter and attenuation coefficients and relative density of aerosols in the atmosphere, as well as the height of the boundary layer, the entrainment parameter, and the amount, height and optical depth of cloud layers. Ultimately, the information this proposal will provide will be used to develop methods to mitigate the effects of emissions into the atmosphere. The project will provide valuable research experience to several graduate students.

该奖项支持部署一个移动的弹性激光雷达系统，用于在“特大城市对区域和全球环境的影响-墨西哥城实验”（MIRAGE-Mex）期间测量距墨西哥城不同距离处的气溶胶辐射特性。该项目的目标是研究目前世界第二大都市区墨西哥城流出的气体和气溶胶污染物的化学和物理变化。该项目涉及部署弹性激光雷达系统和支持设备。移动的激光雷达的使用将允许墨西哥城羽流的位置，浓度，范围和持久性的特点，因为它传输到周围地区。该系统的流动性将允许在一个区域的气溶胶与其上风来源之间建立联系。这些测量将有助于解决与气溶胶大小、形状和成分随时间变化有关的问题。激光雷达将提供关于大气中悬浮微粒的高度、后向散射和衰减系数及相对密度、边界层高度、卷吸参数以及云层数量、高度和光学深度的信息。本提案提供的信息最终将用于制定减轻向大气排放影响的方法。该项目将为几名研究生提供宝贵的研究经验。