ATMOCHEM - Integrated analysis of long-range pollution transport to mid- and high-latitudes over Europe using model simulations, satellite observations, and aircraft measurements (INTAS)

INTAS项目将利用卫星观测、模型模拟和飞机测量的综合分析，调查通过远程运输进入欧洲中高纬度地区的污染物进口情况。研究污染物从源区到受体区的传输途径，以及在传输过程中光化学过程和气溶胶微物理特性的变化。将特别关注阿拉斯加和加拿大的森林火灾排放和北美城市地区的人为污染对欧洲敏感区域的影响，包括地中海和北极的欧洲部分。将研究污染输入对区域空气质素的影响，例如臭氧浓度和辐射强迫。INTAS包括几个创新方面。借助模式辅助对流层柱的检索和结合使用多个卫星传感器，将有助于利用卫星观测监测远距离运输。建立了一种新型的高分辨率拉格朗日光化学模型，并将其用于研究污染羽流在运输过程中的成分变化。拉格朗日实验将在用人工示踪剂标记气团的地方进行分析，以研究化学和羽流与环境混合的相互作用。利用卫星和飞机的测量数据，将改进活性氮重要源和汇的化学输运模型的参数化。

The INTAS project will investigate the import of pollutants by long-range transport into mid- and high-latitudes over Europe using an integrated analysis of satellite observations, model simulations, and aircraft measurements. The transport pathways of pollutants from source to receptor regions will be studied as well as the photochemical processing and changes in microphysical aerosol properties during transport. A particular focus will be on the impact of emissions of forest fires in Alaska and Canada and anthropogenic pollution from urban areas of North America on sensitive European receptor regions including the Mediterranean and the European sector of the Arctic. The implications of the pollution import on regional air quality, e.g. ozone concentrations, and radiative forcing will be studied.INTAS includes several innovative aspects. The use of satellite observations to monitor long-range transport will be facilitated by model-assisted retrievals of tropospheric columns and combined use of multiple satellite sensors. A novel high resolution Lagrangian model with photochemistry will be developed and used to investigate the composition changes in pollution plumes during transport. Lagrangian experiments will be analysed where air masses have been tagged with an artificial tracer to study the interplay of chemistry and mixing of the plumes with the environment. Parameterizations in a chemistry-transport model of important sources and sinks of reactive nitrogen will be improved by exploiting measurements from satellite and aircraft.