Investigation of Pollution Transport to Taiwan

污染输台调查

• 批准号: 448170346
• 负责人: Dr. Andreas Richter
• 金额: --
• 依托单位: National Science and Technology Council (NSTC)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/448170346?language=en
• 关键词: Investigation; Pollution; Transport; Taiwan

Air pollution in Asia is dominated by anthropogenic emissions from the rapidly developing economies in China and other countries on the one hand and emissions from biomass burning, in particular in South-East Asia on the other hand. While largest pollutant concentrations are found close to the sources, transport is also important, both in clearing polluted air masses in emission regions and in bringing pollution to areas far away from emissions. The East-Asian monsoon plays a large role in driving transport of pollution and also the advection of clean air from the Pacific. As a result, air quality in Taiwan is affected not only by local by pollution, but also by transport of pollution from China and biomass burning emissions from Indochina, and therefore offers an ideal measurement position to study this phenomenon.In order to investigate the different contributions to local pollution levels, the research station Cape Fuguei at the Northern tip of Taiwan will be equipped with a MAX-DOAS instrument focusing on observations of NO2, HCHO, C2H2O2 and aerosols. This complements the existing instrumentation (in-situ aerosol and trace gas observations, lidar, photometers) and will be used to create a multi-year time series of tropospheric columns and vertical profiles of the trace gases of interest. The intention is to continue the measurements after the end of the project. Within the project, attempts will be made to improve the information content of the MAX-DOAS observations for elevated pollution layers through polarised observations, choice of special observation geometries, exploitation of the wavelength dependency and different treatment of the background spectrum used in the analysis. The resulting data set will be combined with regional satellite observations of GOME-2, OMI, S5P and (if available) GEMS, with meteorological data and with back-trajectories in order to identify source regions for pollution transport to Taiwan and to quantify their relevance on local air quality. The MAX-DOAS retrievals, together with other observations from the observatory as well as satellite measurements will then be linked to dedicated WRF-chem simulations for better interpretation of the chemical and transport situations and the role of Monsoon in air pollution transport. The expected outcome of the project is a quantification of the impact of pollution transport to Taiwan, the source regions and source types involved and the role of the Asian Monsoon in driving this transport.

亚洲的空气污染主要是来自中国和其他国家迅速发展的经济体的人为排放，以及来自生物质燃烧的排放，特别是在东南亚。虽然最大的污染物浓度是在污染源附近发现的，但运输也很重要，无论是在清除排放地区的污染空气团，还是在将污染带到远离排放地区的地区。东亚季风在推动污染的运输和太平洋清洁空气的平流方面发挥着重要作用。因此，台湾的空气质量不仅受到当地污染的影响，还受到来自中国的污染运输和来自印度支那的生物质燃烧排放的影响，因此提供了一个理想的测量位置来研究这一现象。为了研究不同因素对当地污染水平的影响，台湾北端的富贵角研究站将配备MAX-DOAS仪器，重点观测NO2、HCHO、C2H2O2和气溶胶。这是对现有仪器（现场气溶胶和微量气体观测、激光雷达、光度计）的补充，并将用于创建多年时间序列的对流层柱和感兴趣的微量气体的垂直剖面。目的是在项目结束后继续度量。在该项目内，将尝试通过极化观测、选择特殊观测几何形状、利用波长依赖关系和对分析中使用的背景光谱进行不同处理，来改进对高污染层的MAX-DOAS观测的信息内容。所产生的数据集将与GOME-2、OMI、S5P和（如果有的话）GEMS的区域卫星观测资料、气象数据和反向轨迹相结合，以便确定向台湾输送污染的来源区域，并量化它们与当地空气质量的关系。MAX-DOAS的检索结果，连同天文台的其他观测结果以及卫星测量结果，然后将与专门的wrf化学模拟相联系，以便更好地解释化学和运输情况以及季风在空气污染运输中的作用。该项目的预期结果是量化污染输送到台湾的影响，涉及的来源区域和来源类型，以及亚洲季风在推动这种输送中的作用。