Strahlungswirksamkeit des atmosphärischen Mineralstaubs: Neue Modellstudien auf der Basis von Feldmessungen in Westafrika im Rahmen des AMMA (African Monsoon Multidisciplinary Analysis) Programms

大气矿物尘埃的辐射有效性：基于西非现场测量的新模型研究，作为 AMMA（非洲季风多学科分析）计划的一部分

• 批准号: 62993536
• 负责人: Dr. Katja Hungershöfer
• 金额: --
• 依托单位: Laboratoire Interuniversitaire des Systèmes Atmosphériques
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/62993536?language=en
• 关键词: Strahlungswirksamkeit; des; atmosph; rischen; Mineralstaubs

Mineral dust is one of the most prominent components of the atmospheric aerosol in terms of mass. More than one billion tons are emitted in the arid and semi-arid regions every year and are transported into remote regions all over the world. The dust particles modify the radiation balance through scattering and absorption of the atmospheric radiation and hence have a direct influence on our climate, among other aspects. Due to the great inaccuracy concerning the knowledge of the dust key properties, a quantification of this direct radiative effect has not yet been possible with adequate precision. In the framework of the requested research project radiative transfer calculations will be performed in order to achieve a better estimation of the direct radiative effect of dust particles in West Africa. Thereby measurements performed during two intensive field campaigns in 2006 within the scope of the AMMA program will be applied. These measurements include information on the physical, chemical and optical properties which will serve as input parameters for the radiative transfer calculations as well as measurements of the radiative flux densities that can be used to verify the model results.

就质量而言，矿物粉尘是大气气溶胶中最显著的成分之一。在干旱和半干旱地区，每年有超过10亿吨的气体排放，并被输送到世界各地的偏远地区。尘埃颗粒通过散射和吸收大气辐射来改变辐射平衡，因此对我们的气候等方面有直接影响。由于对尘埃关键性质的认识存在很大的不准确性，目前还不可能以足够的精度对这种直接辐射效应进行量化。在所要求的研究项目框架内，将进行辐射转移计算，以便更好地估计西非尘埃颗粒的直接辐射影响。因此，将采用2006年在AMMA方案范围内的两次密集实地活动期间进行的测量。这些测量包括将用作辐射传递计算的输入参数的物理、化学和光学性质的信息，以及可用于验证模型结果的辐射通量密度的测量。