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，调查通过远程运输向欧洲中高纬度地区输入污染物的情况。将研究污染物从源头到接受区的传输路径，以及在传输过程中的光化学处理和微物理气溶胶性质的变化。重点将特别放在阿拉斯加和加拿大的森林火灾排放以及来自北美城市地区的人为污染对包括地中海和北极欧洲部分在内的欧洲敏感地区的影响。将研究污染输入对区域空气质量的影响，例如臭氧浓度和辐射强迫。INTAS包括若干创新方面。利用卫星观测监测远距离传输将通过模型辅助提取对流层柱和综合使用多个卫星传感器来促进。发展了一种新的高分辨率拉格朗日光化学模型，并用于研究污染羽流在输送过程中的成分变化。拉格朗日实验将在气团被人工示踪剂标记的情况下进行分析，以研究羽流与环境的化学和混合的相互作用。通过利用卫星和飞机的测量，将改进重要的活性氮源和汇的化学运输模型中的参数。

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.