Measurements of tracer and precursor gases of secondary photooxidants and aerosols in pollution plumes of major European and Asian population centers (MEPOLL)

测量欧洲和亚洲主要人口中心污染羽流中二次光氧化剂和气溶胶的示踪气体和前体气体 (MEPOLL)

• 批准号: 316834179
• 负责人: Dr. Hans Schlager
• 金额: --
• 依托单位: Abteilung Atmosphärische Spurenstoffe
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/316834179?language=en
• 关键词: Measurements; tracer; precursor; gases; secondary

This project is a contribution to the EMeRGe (Effect of megacities on the transport and transformation of pollutants on the regional and global scales) HALO mission and aims to investigate and identify differences in the composition of emissions in major population centers (MPCs) in Europe and Asia and specific transport and transformation processes of the pollution outflow in these regions. This will include detailed measurements with the HALO long range aircraft of the horizontal and vertical evolution of the MPC pollution plumes including vertical uplift of emissions into the free troposphere by convection. Two HALO campaigns are foreseen in Europe and East Asia based from Oberpfaffenhofen, Germany und Taipeh, Taiwan, respectively. The focus of this project is on measurements of tracer (CO, CO2, CH4, PFCs [perfluorocarbons]) to study the dispersion and mixing of pollution from MPCs with the environment, precursor gases of photooxidants (NOx), and precursor gases of aerosols (SO2, semi-volatile organic compounds). Four instrument systems will be deployed which have been developed for HALO and used already successfully during previous HALO campaigns. This includes an instrument package for ambient and artificial tracer (AMTEX, PERTRAS), NOx/NOy chemiluminescence detectors (AENEAS), and a chemical ionization ion trap mass spectrometer (CI-ITMS). For EMeRGe, the measurements capabilities of PERTRAS and CI-ITMS will be extended for the detection of organic acids which are expected to play an important role in aerosol formation and growth in MPC plumes. Furthermore, specific Lagrangian experiments will be performed using PFC tracer. This includes release of PFC tracer in selected MPC to tag the pollution plume and subsequent sampling of the pollution outflow downstream. Finally, this project will support the flight planning during the two HALO campaigns by providing meteorological and tracer dispersion forecasts using web-based interactive tools.

该项目是对EMeRGe（特大城市对区域和全球范围内污染物运输和转化的影响）HALO使命的贡献，旨在调查和确定欧洲和亚洲主要人口中心排放组成的差异以及这些地区污染流出的具体运输和转化过程。这将包括用HALO远程飞机详细测量MPC污染羽流的水平和垂直演变，包括排放物通过对流垂直上升到自由对流层。预计将在欧洲和东亚开展两项HALO活动，分别以德国的Oberpfaffenhofen和台湾的台北为基地。该项目的重点是测量示踪物（CO、CO2、CH 4、PFCs [全氟化碳]），以研究MPC污染物与环境、光氧化剂（NOx）前体气体和气溶胶（SO2、半挥发性有机化合物）前体气体的扩散和混合情况。将部署四个仪器系统，这四个系统是为哈洛计划开发的，并已在哈洛计划以前的活动中成功使用。这包括用于环境和人工示踪剂的仪器包（AMTEX、PERTRAS）、NOx/NOy化学发光检测器（AENEAS）和化学电离离子阱质谱仪（CI-ITMS）。对于EMeRGe，PERTRAS和CI-ITMS的测量能力将被扩展，用于检测有机酸，这些有机酸预计将在MPC羽流的气溶胶形成和增长中发挥重要作用。此外，将使用PFC示踪剂进行特定的拉格朗日实验。这包括在选定的MPC中释放PFC示踪剂，以标记污染羽流，并随后对下游的污染流出物进行采样。最后，该项目将通过利用网络互动工具提供气象和示踪剂散布预报，支持两次哈洛活动期间的飞行规划。