长三角城市细颗粒物和臭氧的垂直分布、理化耦合及其天气效应

细颗粒物和臭氧是城市大气复合污染的主要成分，也是重要的短寿命辐射活性物种, 其垂直分布和相互作用对城市气象具有重要影响。在快速城市化和工业化的长三角地区，以细颗粒物和臭氧成为特征的大气污染日益突出，其物理/化学/光学特性的垂直结构、耦合机理及其对城市气象的影响还不清楚。本项目以南京为例，通过开展强化观测，采用多种先进探测手段，弄清臭氧和细颗粒物浓度、成分和光学参数的垂直分布特征；发展一维气溶胶-辐射-大气化学多过程耦合模式，分析细颗粒物和臭氧耦合的物理化学过程及其对垂直结构的影响，揭示细颗粒物和臭氧相互作用的基本规律；模拟城市细颗粒物和臭氧的三维结构，量化臭氧和细颗粒物的辐射效应，评估对细颗粒物和臭氧对城市热岛、降水和雾霾等天气的影响及其反馈作用。本项目的实施将加深对长三角城市细颗粒物和臭氧的垂直结构、耦合机理和天气效应的科学认识，在大气污染控制和灾害气象应对方面具有重要的应用价值。

Fine particulate matter and ozone are the major air pollutants for urban complex pollution as well as the important short life radiative forcing species. Air pollution, as exemplified by fine particulate matter and ozone is increasingly serious in Yangtze River Delta region in the process of rapid urbanization and industrialization. However, the vertical structure and coupling process as well as their impact on urban meteorology is not clear. Taking Nanjing as an example, the project is going to carry out intense experiments with modern monitoring technique , clarify the vertical distribution of concentration, composition and optical parameters of fine particulate matter and ozone, reveal interactional manifestations and coupling mechanisms of fine particulate matter and ozone, develop of atmospheric multiphase chemistry - aerosol - radiation multi-process coupling model, analyze interactional physical and chemical processes of fine particulate matter and ozone, quantify the radiative effect of fine particles and ozone. The project has important scientific significance for understanding the vertical distribution and chemical coupling mechanisms of urban fine particulate matter and ozone, and has significant practical value in the cooperative control of complex air pollution.