Identification of tropospheric emissions sources from satellite observations: synergistic use of trace gas measurements of formaldehyde (HCHO), nitrogen dioxide (NO2), and sulfur dioxide (SO2)

通过卫星观测识别对流层排放源：甲醛 (HCHO)、二氧化氮 (NO2) 和二氧化硫 (SO2) 痕量气体测量的协同使用

• 批准号: 5452112
• 负责人: Dr. Thierry Marbach
• 金额: --
• 依托单位: Max-Planck-Institut für Chemie (Otto-Hahn-Institut)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5452112?language=en
• 关键词: Identification; tropospheric; emissions; sources; satellite

During recent years a new generation of UV/vis satellite instrument was put in orbit which allows to map global distributions of several tropospheric trace gases like NO2, HCHO, and SO2 at high spatial resolution. Because of short atmospheric lifetimes of these gases (hours to days), these maps allow investigation of the global distribution of sources, sinks, and their temporal changes. This is an important step forward for the knowledge of the composition and evolution of the atmosphere, and the implications for societally relevant issues, such as climate, ecosystems or human health. Here we propose to test and improve current estimates of the global distributions of sources for NO2, HCHO, and SO2. First, we will identify and assign the different known sources to the observed tropospheric trace gas distributions. Second, from the combined investigation of the different trace species we will characterize different types of sources due to their specific mix of emissions. In a third phase we will quantify the absolute emissions of selected sources from our satellite data. From a comparison of the NO2, HCHO, and SO2 satellite maps with atmospheric model results we will investigate in detail the quality of current emission inventories. The satellite maps will also be used to adjust the models by using inverse modelling method. In particular, the latter aspect requires tropospheric satellite data with largely improved accuracy. Therefore, much emphasis of the current project laid on the improvement of atmospheric radiation transfer modelling and cloud correction.

近年来，新一代紫外/维斯卫星仪器被送入轨道，它可以以高空间分辨率绘制几种对流层痕量气体（如NO2、HCHO和SO2）的全球分布图。由于这些气体在大气中的寿命很短（几小时到几天），这些地图可以调查全球源、汇的分布及其随时间的变化。这是向前迈出的重要一步，有助于了解大气层的组成和演变，以及对气候、生态系统或人类健康等社会相关问题的影响。在这里，我们建议测试和改善目前的估计全球分布的NO2，HCHO和SO2的来源。首先，我们将确定和分配不同的已知来源所观察到的对流层微量气体分布。第二，从不同的痕量物质的联合调查，我们将表征不同类型的来源，由于其特定的混合排放。在第三阶段，我们将根据我们的卫星数据量化选定来源的绝对排放量。通过NO2、HCHO和SO2卫星图与大气模型结果的比较，我们将详细研究当前排放清单的质量。卫星地图还将用于通过使用逆建模方法来调整模型。特别是，后一个方面需要精确度大大提高的对流层卫星数据。因此，当前项目的重点是改进大气辐射传输模型和云校正。

项目成果

Monitoring of atmospheric trace gases, clouds, aerosols and surface properties from UV/vis/NIR satellite instruments

• DOI: 10.1088/1464-4258/10/10/104019
• 发表时间: 2008-10
• 期刊: Journal of Optics
• 影响因子: 2.1
• 作者: T. Wagner;S. Beirle;T. Deutschmann;E. Eigemeier;C. Frankenberg;M. Grzegorski;Cheng Liu;T. Marbach;U. Platt;M. P. D. Vries